Rule2025-14681

Medicare Program; Hospital Inpatient Prospective Payment Systems for Acute Care Hospitals (IPPS) and the Long-Term Care Hospital Prospective Payment System and Policy Changes and Fiscal Year (FY) 2026 Rates; Changes to the FY 2025 IPPS Rates Due to Court Decision; Requirements for Quality Programs; and Other Policy Changes; Health Data, Technology, and Interoperability: Electronic Prescribing, Real-Time Prescription Benefit and Electronic Prior Authorization

Primary source

Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.

Published
August 4, 2025
Effective
October 1, 2025

Issuing agencies

Health and Human Services DepartmentCenters for Medicare & Medicaid Services

Abstract

This final rule revises the Medicare hospital inpatient prospective payment systems (IPPS) for operating and capital-related costs of acute care hospitals; makes changes relating to Medicare graduate medical education (GME) for teaching hospitals; updates the payment policies and the annual payment rates for the Medicare prospective payment system (PPS) for inpatient hospital services provided by long-term care hospitals (LTCHs); updates and makes changes to requirements for certain quality programs; and makes other policy- related changes. We are also finalizing the provisions of the interim final action with comment period regarding the changes to the FY 2025 IPPS rates due to the court decision in Bridgeport Hosp. v. Becerra. Lastly, it finalizes certain updates to the ONC Health Information Technology (IT) Certification Program.

Full Text

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<title>Federal Register, Volume 90 Issue 147 (Monday, August 4, 2025)</title>
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[Federal Register Volume 90, Number 147 (Monday, August 4, 2025)]
[Rules and Regulations]
[Pages 36536-37308]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-14681]



[[Page 36535]]

Vol. 90

Monday,

No. 147

August 4, 2025

Part II





Department of Health and Human Services





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45 CFR Part 170





Centers for Medicare & Medicaid Services





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42 CFR Parts 412, 495, and 512





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Medicare Program; Hospital Inpatient Prospective Payment Systems for 
Acute Care Hospitals (IPPS) and the Long-Term Care Hospital Prospective 
Payment System and Policy Changes and Fiscal Year (FY) 2026 Rates; 
Changes to the FY 2025 IPPS Rates Due to Court Decision; Requirements 
for Quality Programs; and Other Policy Changes; Health Data, 
Technology, and Interoperability: Electronic Prescribing, Real-Time 
Prescription Benefit and Electronic Prior Authorization; Direct-
Interim-Final Rule

Federal Register / Vol. 90 , No. 147 / Monday, August 4, 2025 / Rules 
and Regulations

[[Page 36536]]



DEPARTMENT OF HEALTH AND HUMAN SERVICES

Centers for Medicare & Medicaid Services

42 CFR Parts 412, 495, and 512

Office of the Secretary

45 CFR Part 170

[CMS-1833-F and CMS-1808-F] RINs 0938-AV45, 0938-AV34, and 0955-AA06


Medicare Program; Hospital Inpatient Prospective Payment Systems 
for Acute Care Hospitals (IPPS) and the Long-Term Care Hospital 
Prospective Payment System and Policy Changes and Fiscal Year (FY) 2026 
Rates; Changes to the FY 2025 IPPS Rates Due to Court Decision; 
Requirements for Quality Programs; and Other Policy Changes; Health 
Data, Technology, and Interoperability: Electronic Prescribing, Real-
Time Prescription Benefit and Electronic Prior Authorization

AGENCY: Centers for Medicare & Medicaid Services (CMS) and Assistant 
Secretary for Technology Policy (ASTP)/Office of the National 
Coordinator for Health Information Technology (ONC) (collectively, 
ASTP/ONC), Department of Health and Human Services (HHS).

ACTION: Final rules.

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SUMMARY: This final rule revises the Medicare hospital inpatient 
prospective payment systems (IPPS) for operating and capital-related 
costs of acute care hospitals; makes changes relating to Medicare 
graduate medical education (GME) for teaching hospitals; updates the 
payment policies and the annual payment rates for the Medicare 
prospective payment system (PPS) for inpatient hospital services 
provided by long-term care hospitals (LTCHs); updates and makes changes 
to requirements for certain quality programs; and makes other policy-
related changes. We are also finalizing the provisions of the interim 
final action with comment period regarding the changes to the FY 2025 
IPPS rates due to the court decision in Bridgeport Hosp. v. Becerra. 
Lastly, it finalizes certain updates to the ONC Health Information 
Technology (IT) Certification Program.

DATES: These final rules are effective on October 1, 2025. The 
incorporation by reference of certain material listed in this document 
is approved by the Director of the Federal Register as of October 1, 
2025.

FOR FURTHER INFORMATION CONTACT: Donald Thompson, and Michele Hudson, 
(410) 786-4487 or <a href="/cdn-cgi/l/email-protection#c185808281a2acb2efa9a9b2efa6aeb7"><span class="__cf_email__" data-cfemail="eaaeaba9aa898799c4828299c48d859c">[email&#160;protected]</span></a>, Operating Prospective Payment, MS-
DRG Relative Weights, Wage Index, Hospital Geographic 
Reclassifications, Graduate Medical Education, Capital Prospective 
Payment, Excluded Hospitals, Medicare Disproportionate Share Hospital 
(DSH) Payment Adjustment, Sole Community Hospitals (SCHs), Medicare-
Dependent Small Rural Hospital (MDH) Program, Low-Volume Hospital 
Payment Adjustment, and Inpatient Critical Access Hospital (CAH) 
Issues.
    Emily Lipkin, Jim Mildenberger and Hyeyoung Kim, <a href="/cdn-cgi/l/email-protection#a6e2e7e5e6c5cbd588ceced588c1c9d0"><span class="__cf_email__" data-cfemail="0f4b4e4c4f6c627c2167677c21686079">[email&#160;protected]</span></a>, 
Long-Term Care Hospital Prospective Payment System and MS-LTC-DRG 
Relative Weights Issues.
    Lily Yuan, <a href="/cdn-cgi/l/email-protection#c48aa1b390a1a7ac84a7a9b7eaacacb7eaa3abb2"><span class="__cf_email__" data-cfemail="753b10022110161d351618065b1d1d065b121a03">[email&#160;protected]</span></a>, New Technology Add-On Payments 
Issues.
    Mady Hue, <a href="/cdn-cgi/l/email-protection#d4b9b5a6bdb8a1fabca1b194b7b9a7fabcbca7fab3bba2"><span class="__cf_email__" data-cfemail="f29f93809b9e87dc9a8797b2919f81dc9a9a81dc959d84">[email&#160;protected]</span></a>, and Andrea Hazeley, 
<a href="/cdn-cgi/l/email-protection#77161913051216591f160d121b120e37141a04591f1f0459101801"><span class="__cf_email__" data-cfemail="64050a001601054a0c051e0108011d240709174a0c0c174a030b12">[email&#160;protected]</span></a>, MS-DRG Classifications Issues.
    Radhika Puri, <a href="/cdn-cgi/l/email-protection#82d0e3e6eaebe9e3acf2f7f0ebc2e1eff1aceaeaf1ace5edf4"><span class="__cf_email__" data-cfemail="045665606c6d6f652a7471766d446769772a6c6c772a636b72">[email&#160;protected]</span></a>, Rural Community Hospital 
Demonstration Program Issues.
    Jeris Smith, <a href="/cdn-cgi/l/email-protection#d9b3bcabb0aaf7aab4b0adb199bab4aaf7b1b1aaf7beb6af"><span class="__cf_email__" data-cfemail="640e01160d174a17090d100c240709174a0c0c174a030b12">[email&#160;protected]</span></a>, Frontier Community Health 
Integration Project (FCHIP) Demonstration Issues.
    Lang Le, <a href="/cdn-cgi/l/email-protection#a1cdc0cfc68fcdc4e1c2ccd28fc9c9d28fc6ced7"><span class="__cf_email__" data-cfemail="a9c5c8c7ce87c5cce9cac4da87c1c1da87cec6df">[email&#160;protected]</span></a>, Hospital Readmissions Reduction 
Program--Administration Issues.
    Ngozi Uzokwe, <a href="/cdn-cgi/l/email-protection#c3ada4acb9aaedb6b9aca8b4a683a0aeb0edababb0eda4acb5"><span class="__cf_email__" data-cfemail="0e6069617467207b746165796b4e6d637d2066667d20696178">[email&#160;protected]</span></a>, Hospital Readmissions 
Reduction Program--Measures Issues.
    Jennifer Tate, <a href="/cdn-cgi/l/email-protection#ff959a919196999a8dd18b9e8b9abf9c928cd197978cd1989089"><span class="__cf_email__" data-cfemail="d9b3bcb7b7b0bfbcabf7adb8adbc99bab4aaf7b1b1aaf7beb6af">[email&#160;protected]</span></a>, Hospital-Acquired 
Condition Reduction Program--Administration Issues.
    Ngozi Uzokwe, <a href="/cdn-cgi/l/email-protection#adc3cac2d7c483d8d7c2c6dac8edcec0de83c5c5de83cac2db"><span class="__cf_email__" data-cfemail="d6b8b1b9acbff8a3acb9bda1b396b5bba5f8bebea5f8b1b9a0">[email&#160;protected]</span></a>, Hospital-Acquired Condition 
Reduction Program--Measures Issues.
    Julia Venanzi, <a href="/cdn-cgi/l/email-protection#701a051c19115e06151e111e0a1930131d035e1818035e171f06"><span class="__cf_email__" data-cfemail="8ee4fbe2e7efa0f8ebe0efe0f4e7ceede3fda0e6e6fda0e9e1f8">[email&#160;protected]</span></a>, Hospital Inpatient 
Quality Reporting Program and Hospital Value-Based Purchasing Program--
Administration Issues.
    Melissa Hager, <a href="/cdn-cgi/l/email-protection#90fdf5fcf9e3e3f1bef8f1f7f5e2d0f3fde3bef8f8e3bef7ffe6"><span class="__cf_email__" data-cfemail="cda0a8a1a4bebeace3a5acaaa8bf8daea0bee3a5a5bee3aaa2bb">[email&#160;protected]</span></a>, and Ngozi Uzokwe, 
<a href="/cdn-cgi/l/email-protection#ec828b839685c2999683879b89ac8f819fc284849fc28b839a"><span class="__cf_email__" data-cfemail="18767f776271366d6277736f7d587b756b3670706b367f776e">[email&#160;protected]</span></a>--Hospital Inpatient Quality Reporting Program 
and Hospital Value-Based Purchasing Program--Measures Issues Except 
Hospital Consumer Assessment of Healthcare Providers and Systems 
Issues.
    Elizabeth Goldstein, <a href="/cdn-cgi/l/email-protection#23464f4a59424146574b0d444c4f475057464a4d63404e500d4b4b500d444c55"><span class="__cf_email__" data-cfemail="71141d180b10131405195f161e1d15020514181f31121c025f1919025f161e07">[email&#160;protected]</span></a>, Hospital 
Inpatient Quality Reporting and Hospital Value-Based Purchasing--
Hospital Consumer Assessment of Healthcare Providers and Systems 
Measures Issues.
    Jennifer Tate, <a href="/cdn-cgi/l/email-protection#6e040b000007080b1c401a0f1a0b2e0d031d4006061d40090118"><span class="__cf_email__" data-cfemail="b5dfd0dbdbdcd3d0c79bc1d4c1d0f5d6d8c69bddddc69bd2dac3">[email&#160;protected]</span></a>, PPS-Exempt Cancer 
Hospital Quality Reporting--Administration Issues.
    Kristina Rabarison, <a href="/cdn-cgi/l/email-protection#d398a1baa0a7babdb2fd81b2b1b2a1baa0bcbd93b0bea0fdbbbba0fdb4bca5"><span class="__cf_email__" data-cfemail="e5ae978c96918c8b84cbb7848784978c968a8ba5868896cb8d8d96cb828a93">[email&#160;protected]</span></a>, PPS-Exempt 
Cancer Hospital Quality Reporting Program--Measure Issues
    Ariel Cress, <a href="/cdn-cgi/l/email-protection#19586b707c75375a6b7c6a6a597a746a3771716a377e766f"><span class="__cf_email__" data-cfemail="3372415a565f1d704156404073505e401d5b5b401d545c45">[email&#160;protected]</span></a>, Long-Term Care Hospital 
Quality Reporting Program--Administration Issues.
    Jessica Warren, <a href="/cdn-cgi/l/email-protection#dfb5baacacb6bcbef1a8beadadbab19fbcb2acf1b7b7acf1b8b0a9"><span class="__cf_email__" data-cfemail="b2d8d7c1c1dbd1d39cc5d3c0c0d7dcf2d1dfc19cdadac19cd5ddc4">[email&#160;protected]</span></a>, and Lisa Marie Gomez, 
<a href="/cdn-cgi/l/email-protection#f6ba9f8597bb97849f93d8b1999b938cc7b6959b85d89e9e85d8919980"><span class="__cf_email__" data-cfemail="d79bbea4b69ab6a5beb2f990b8bab2ade697b4baa4f9bfbfa4f9b0b8a1">[email&#160;protected]</span></a>, Medicare Promoting Interoperability 
Program.
    Bridget Dickensheets, <a href="/cdn-cgi/l/email-protection#690b1b000d0e0c1d470d000a020c071a010c0c1d1a290a041a4701011a470e061f"><span class="__cf_email__" data-cfemail="51332338353634257f3538323a343f22393434252211323c227f3939227f363e27">[email&#160;protected]</span></a> and Mollie 
Knight, <a href="/cdn-cgi/l/email-protection#4d202221212428632623242a25390d2e203e6325253e632a223b"><span class="__cf_email__" data-cfemail="44292b28282d216a2f2a2d232c30042729376a2c2c376a232b32">[email&#160;protected]</span></a>, IPPS Market Basket Rebasing.
    <a href="/cdn-cgi/l/email-protection#1a59575753454e5f5b575a79776934727269347d756c"><span class="__cf_email__" data-cfemail="591a141410060d1c1814193a342a7731312a773e362f">[email&#160;protected]</span></a>, Transforming Episode Accountability Model 
(TEAM)
    Michael Lipinski, Office of Policy, Assistant Secretary for 
Technology Policy (ASTP)/Office of the National Coordinator for Health 
Information Technology (ASTP/ONC), 202-690-7151.

SUPPLEMENTARY INFORMATION: 

Tables Available on the CMS Website

    The IPPS tables for this fiscal year (FY) 2026 final rule are 
available on the CMS website at <a href="https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/index">https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/index</a>.html. Click on the link 
on the left side of the screen titled ``FY 2026 IPPS Final Rule Home 
Page'' or ``Acute Inpatient--Files for Download.'' The LTCH PPS tables 
for this FY 2026 final rule are available on the CMS website at <a href="https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/LongTermCareHospitalPPS/index.html">https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/LongTermCareHospitalPPS/index.html</a> under the list item for Regulation 
Number CMS-1833-F. For further details on the contents of the tables 
referenced in this final rule, we refer readers to section VI. of the 
Addendum to this FY 2026 IPPS/LTCH PPS final rule.
    Readers who experience any problems accessing any of the tables 
that are posted on the CMS websites, as previously identified, should 
contact Michael Treitel, <a href="/cdn-cgi/l/email-protection#3a7e7b797a59574914525249145d554c"><span class="__cf_email__" data-cfemail="db9f9a989bb8b6a8f5b3b3a8f5bcb4ad">[email&#160;protected]</span></a>.

I. Executive Summary and Background

A. Executive Summary

1. Purpose and Legal Authority
    This FY 2026 IPPS/LTCH PPS final rule will make payment and policy 
changes under the Medicare inpatient

[[Page 36537]]

prospective payment system (IPPS) for operating and capital-related 
costs of acute care hospitals as well as for certain hospitals and 
hospital units excluded from the IPPS. In addition, it makes payment 
and policy changes for inpatient hospital services provided by long-
term care hospitals (LTCHs) under the long-term care hospital 
prospective payment system (LTCH PPS). This final rule also makes 
policy changes to programs associated with Medicare IPPS hospitals, 
IPPS-excluded hospitals, and LTCHs. We are also making changes relating 
to Medicare graduate medical education (GME) for teaching hospitals.
    In the Hospital Value-Based Purchasing (VBP) Program, we are 
finalizing modifications to the Hospital-Level Total Hip Arthroplasty/
Total Knee Arthroplasty (THA/TKA) Complications measure beginning with 
the FY 2033 program year. We also provide notice of the technical 
update to the five National Healthcare Safety Network (NHSN) Healthcare 
Associated Infection (HAI) measures beginning with the FY 2029 program 
year, and the technical update to the six measures in the Clinical 
Outcomes domain beginning with the FY 2027 program year. We are 
finalizing removal of the Health Equity Adjustment (HEA) from the 
program's scoring calculations in the FY 2026 program year. We provide 
previously and newly established performance standards for FY 2027 
through FY 2031 program years for the Hospital VBP Program.
    In the Hospital-Acquired Condition (HAC) Reduction Program, we are 
also providing notice of the technical update to the five Centers for 
Disease Control and Prevention's (CDC) NHSN healthcare-associated 
infection (HAI) measures.
    In the Hospital Readmissions Reduction Program, we are finalizing 
our proposal to add Medicare Advantage (MA) beneficiaries to the six 
Hospital Readmissions Reduction Program (HRRP) measures beginning with 
the FY 2027 program year; however, we are not finalizing our proposal 
to include payment data for MA beneficiaries in the calculation of 
aggregate payments for excess readmissions. We also are finalizing our 
proposal to reduce the applicable period from 3-years to 2-years 
beginning with the FY 2027 program year. We also provide notice of the 
technical update to remove the COVID-19 exclusion from all six 
readmission measures.
    In the PPS-Exempt Cancer Hospital Quality Reporting Program 
(PCHQR), we are finalizing our proposals to modify the public reporting 
requirements and remove three existing measures.
    In the Hospital Inpatient Quality Reporting (IQR) Program, we are 
finalizing our proposals to modify four existing quality measures and 
to remove four existing measures. We also are finalizing our proposal, 
with modification, to update and codify the Extraordinary Circumstances 
Exception (ECE) policy to clarify that CMS has the discretion to grant 
an extension in response to an ECE request from a hospital in the 
Hospital IQR, Hospital Readmissions Reduction, PCHQR, HAC Reduction, 
and Hospital VBP Programs with a modification.
    In the Medicare Promoting Interoperability Program, we are 
finalizing our proposal to define the electronic health record (EHR) 
reporting period in CY 2026 and subsequent years as a minimum of any 
continuous 180-day period within that calendar year for eligible 
hospitals and CAHs participating in the Medicare Promoting 
Interoperability Program and to make corresponding revisions at 42 CFR 
495.4. We are finalizing our proposal, with modifications, to revise 
the Security Risk Analysis measure beginning with the EHR reporting 
period in CY 2026. We are finalizing our proposal to modify the Safety 
Assurance Factors for EHR Resilience (SAFER) Guides measure beginning 
with the EHR reporting period in CY 2026. We are finalizing our 
proposal to add an optional bonus measure under the Public Health and 
Clinical Data Exchange objective for reporting data to a public health 
agency (PHA) using the Trusted Exchange Framework and Common Agreement 
(TEFCA) beginning with the EHR reporting period in CY 2026.
    For the LTCH Quality Reporting Program (QRP), we are finalizing our 
proposal to remove one item from the LTCH Continuity Assessment Record 
and Evaluation (CARE) Data Set (LCDS) with respect to patients who have 
expired in the LTCH. We also are finalizing our proposal to remove four 
Social Determinant of Health (SDOH) standardized patient assessment 
data elements from the LCDS. Next, we are finalizing our proposal to 
amend the reconsideration request process in the LTCH QRP. Finally, we 
include summaries of comments received in response to Requests for 
Information (RFIs) on: (1) future measure concepts for the LTCH QRP; 
(2) revisions to the data submission deadlines for assessment data 
collected for the LTCH QRP; and (3) advancing digital quality 
measurement (dQM) in the LTCH QRP.
    The Transforming Episode Accountability Model (TEAM), a mandatory 
alternative payment model that was finalized in the FY 2025 IPPS/LTCH 
PPS final rule (89 FR 68986), aims to improve beneficiary care through 
financial accountability for episodes categories that begin with one of 
the following procedures: coronary artery bypass graft (CABG), lower 
extremity joint replacement (LEJR), major bowel procedure, surgical 
hip/femur fracture treatment (SHFFT), and spinal fusion. TEAM will test 
whether financial accountability for these episode categories reduces 
Medicare expenditures while preserving or enhancing the quality of care 
for Medicare beneficiaries. In this final rule, we finalizing updates 
to TEAM that would modify policies affecting participation of new 
hospitals, quality measure and assessment, the construction of target 
prices, the removal of certain health reporting elements, the 
broadening of the Skilled Nursing Facility (SNF) 3-Day Rule, and the 
removal of the Decarbonization and Resilience Initiative (DRI). 
Additionally, the policies in this final rule reflect our commitment to 
ensuring TEAM's incentives help to drive beneficiary quality of care 
improvements and reductions in Medicare spending.
    The Secretary of Health and Human Services has delegated 
responsibilities to the Assistant Secretary for Technology Policy 
(ASTP)/Office of the National Coordinator for Health Information 
Technology (ONC) (collectively, ASTP/ONC \1\) for the implementation of 
certain provisions in Title IV of the 21st Century Cures Act (Public 
Law (Pub. L.)) 114-255, December 13, 2016) (Cures Act) that are 
designed to: advance interoperability; support the access, exchange, 
and use of electronic health information (EHI); and identify reasonable 
and necessary activities that do not constitute information 
blocking.\2\ ASTP/ONC is also responsible for implementation of certain 
provisions of the Health Information Technology for Economic and 
Clinical Health Act (Pub. L. 111-5, Feb. 17. 2009) (HITECH Act) 
including: requirements that the National Coordinator perform duties 
consistent with the development of a nationwide

[[Page 36538]]

health information technology infrastructure that allows for the 
electronic use and exchange of information and that promotes a more 
effective marketplace, greater competition, and increased consumer 
choice, among other goals; and requirements to keep or recognize a 
program or programs for the voluntary certification of health 
information technology.
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    \1\ On July 29, 2024, notice was posted in the Federal Register 
that ONC would be dually titled to the Assistant Secretary for 
Technology Policy and Office of the National Coordinator for Health 
Information Technology (89 FR 60903).
    \2\ Reasonable and necessary activities that do not constitute 
information blocking, also known as information blocking exceptions, 
are identified in 45 CFR part 171 subparts B, C and D. ONC's 
official website, <a href="http://HealthIT.gov">HealthIT.gov</a>, offers a variety of resources on the 
topic of Information Blocking, including fact sheets, recorded 
webinars, and frequently asked questions. To learn more, please 
visit: <a href="https://www.healthit.gov/topic/information-blocking/">https://www.healthit.gov/topic/information-blocking/</a>.
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    Under various statutory authorities, we either discuss continued 
program implementation or make changes to the Medicare IPPS, the LTCH 
PPS, other related payment methodologies and programs for FY 2026 and 
subsequent fiscal years, and other policies and provisions included in 
this final rule. These statutory authorities include, but are not 
limited to, the following:
    <bullet> Section 1886(d) of the Social Security Act (the Act), 
which sets forth a system of payment for the operating costs of acute 
care hospital inpatient stays under Medicare Part A (Hospital 
Insurance) based on prospectively set rates. Section 1886(g) of the Act 
requires that, instead of paying for capital-related costs of inpatient 
hospital services on a reasonable cost basis, the Secretary use a 
prospective payment system (PPS).
    <bullet> Section 1886(d)(1)(B) of the Act, which specifies that 
certain hospitals and hospital units are excluded from the IPPS. These 
hospitals and units are: rehabilitation hospitals and units; LTCHs; 
psychiatric hospitals and units; children's hospitals; cancer 
hospitals; extended neoplastic disease care hospitals; and hospitals 
located outside the 50 States, the District of Columbia, and Puerto 
Rico (that is, hospitals located in the U.S. Virgin Islands, Guam, the 
Northern Mariana Islands, and American Samoa). Religious nonmedical 
health care institutions (RNHCIs) are also excluded from the IPPS.
    <bullet> Sections 123(a) and (c) of the Balanced Budget Refinement 
Act of 1999 (BBRA) (Public Law (Pub. L.) 106-113) and section 307(b)(1) 
of the Benefits Improvement and Protection Act of 2000 (BIPA) (Pub. L. 
106-554) (as codified under section 1886(m)(1) of the Act), which 
provide for the development and implementation of a prospective payment 
system for payment for inpatient hospital services of LTCHs described 
in section 1886(d)(1)(B)(iv) of the Act.
    Section 1814(l)(4) of the Act requires, beginning with FY 2017, 
that CAHs that do not successfully demonstrate meaningful use of 
certified electronic health record technology (CEHRT) for an EHR 
reporting period for a cost reporting period shall be paid 100 percent 
of reasonable costs rather than 101 percent of reasonable costs.
    <bullet> Section 1886(a)(4) of the Act, which specifies that costs 
of approved educational activities are excluded from the operating 
costs of inpatient hospital services. Hospitals with approved graduate 
medical education (GME) programs are paid for the direct costs of GME 
in accordance with section 1886(h) of the Act. Hospitals paid under the 
IPPS with approved GME programs are paid for the indirect costs of 
training residents in accordance with section 1886(d)(5)(B) of the Act.
    <bullet> Section 1886(d)(5)(F) of the Act provides for additional 
Medicare IPPS payments to subsection (d) hospitals that serve a 
significantly disproportionate number of low-income patients. These 
payments are known as the Medicare disproportionate share hospital 
(DSH) adjustment. Section 1886(d)(5)(F) of the Act specifies the 
methods under which a hospital may qualify for the DSH payment 
adjustment.
    <bullet> Section 1886(b)(3)(B)(viii) of the Act, which requires the 
Secretary to reduce the applicable percentage increase that would 
otherwise apply to the standardized amount applicable to a subsection 
(d) hospital for discharges occurring in a fiscal year if the hospital 
does not submit data on measures in a form and manner, and at a time, 
specified by the Secretary.
    <bullet> Section 1886(b)(3)(B)(ix) of the Act, which requires 
downward adjustments to the applicable percentage increase, beginning 
with FY 2015 (and beginning with FY 2022 for subsection (d) Puerto Rico 
hospitals), for eligible hospitals that do not successfully demonstrate 
meaningful use of CEHRT for an EHR reporting period for a payment 
adjustment year.
    <bullet> Section 1866(k) of the Act, which provides for the 
establishment of a quality reporting program for hospitals described in 
section 1886(d)(1)(B)(v) of the Act, referred to as ``PPS-exempt cancer 
hospitals.''
    <bullet> Section 1886(n) of the Act, which establishes the 
requirements for an eligible hospital to be treated as a meaningful EHR 
user for an EHR reporting period for a payment year or, for purposes of 
subsection (b)(3)(B)(ix) of the Act, for a fiscal year.
    <bullet> Section 1886(o) of the Act, which requires the Secretary 
to establish a Hospital Value-Based Purchasing (VBP) Program, under 
which value-based incentive payments are made in a fiscal year to 
hospitals based on their performance on measures established for a 
performance period for such fiscal year.
    <bullet> Section 1886(p) of the Act, which establishes a Hospital-
Acquired Condition (HAC) Reduction Program, under which payments to 
applicable hospitals are adjusted to provide an incentive to reduce 
hospital-acquired conditions.
    <bullet> Section 1886(q) of the Act, as amended by section 15002 of 
the 21st Century Cures Act, which establishes the Hospital Readmissions 
Reduction Program. Under the program, payments for discharges from an 
applicable hospital as defined under section 1886(d) of the Act will be 
reduced to account for certain excess readmissions. Section 15002 of 
the 21st Century Cures Act directs the Secretary to assess a hospital's 
performance relative to other hospitals with a similar proportion of 
beneficiaries who are dually eligible for both Medicare and full 
Medicaid benefits.
    <bullet> Section 1886(r) of the Act, as added by section 3133 of 
the Affordable Care Act, which provides for a reduction to 
disproportionate share hospital (DSH) payments under section 
1886(d)(5)(F) of the Act and for an additional uncompensated care 
payment to eligible hospitals. Specifically, section 1886(r) of the Act 
requires that, for fiscal year 2014 and each subsequent fiscal year, 
subsection (d) hospitals that would otherwise receive a DSH payment 
made under section 1886(d)(5)(F) of the Act will receive two separate 
payments: (1) 25 percent of the amount they previously would have 
received under the statutory formula for Medicare DSH payments in 
section 1886(d)(5)(F) of the Act if subsection (r) did not apply (``the 
empirically justified amount''), and (2) an additional payment for the 
DSH hospital's proportion of uncompensated care, determined as the 
product of three factors. These three factors are: (1) 75 percent of 
the payments that would otherwise be made under section 1886(d)(5)(F) 
of the Act, in the absence of section 1886(r) of the Act; (2) 1 minus 
the percent change in the percent of individuals who are uninsured; and 
(3) the hospital's uncompensated care amount relative to the 
uncompensated care amount of all DSH hospitals expressed as a 
percentage.
    <bullet> Section 1886(m)(5) of the Act, which requires the 
Secretary to reduce by 2 percentage points the annual update to the 
standard Federal rate for discharges for a long-term care hospital 
(LTCH) during the rate year for LTCHs that do not submit data on 
quality measures in the form, manner, and at a time, specified by the 
Secretary.
    <bullet> Section 1886(m)(6) of the Act, as added by section 
1206(a)(1) of the Pathway for Sustainable Growth Rate

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(SGR) Reform Act of 2013 (Pub. L. 113-67) and amended by section 
51005(a) of the Bipartisan Budget Act of 2018 (Pub. L. 115-123), which 
provided for the establishment of site neutral payment rate criteria 
under the LTCH PPS, with implementation beginning in FY 2016. Section 
51005(b) of the Bipartisan Budget Act of 2018 amended section 
1886(m)(6)(B) by adding new clause (iv), which specifies that the IPPS 
comparable amount defined in clause (ii)(I) shall be reduced by 4.6 
percent for FYs 2018 through 2026.
    <bullet> Section 1899B of the Act, which provides for the 
establishment of standardized data reporting for certain post-acute 
care providers, including LTCHs.
    <bullet> Section 1115A of the Act authorizes the testing of 
innovative payment and service delivery models that preserve or enhance 
the quality of care furnished to Medicare, Medicaid, and Children's 
Health Insurance Program (CHIP) beneficiaries while reducing program 
expenditures.
2. Summary of the Major Provisions
    The following is a summary of the major provisions in this final 
rule. In general, these major provisions are being finalized as part of 
the annual update to the payment policies and payment rates, consistent 
with the applicable statutory provisions. A general summary of the 
changes in this final rule is presented in section I.D. of the preamble 
of this final rule.
a. Transition for the Discontinuation of the Low Wage Index Hospital 
Policy
    To help mitigate growing wage index disparities between high wage 
and low wage hospitals, in the FY 2020 IPPS/LTCH PPS rule (84 FR 42326 
through 42332), we adopted a policy to increase the wage index values 
for certain hospitals with low wage index values (the low wage index 
hospital policy). This policy was adopted in a budget neutral manner 
through an adjustment applied to the standardized amounts for all 
hospitals. We indicated our intention that this policy would be 
effective for at least 4 years, beginning in FY 2020, in order to allow 
employee compensation increases implemented by these hospitals 
sufficient time to be reflected in the wage index calculation. We also 
stated we intended to revisit the issue of the duration of this policy 
in future rulemaking as we gained experience under the policy. In the 
FY 2025 IPPS/LTCH PPS final rule (89 FR 69301 through 69308), we 
adopted an extension of the low wage index hospital policy and the 
related budget neutrality adjustment effective for at least three more 
years, beginning in FY 2025, in order for sufficient wage data from 
after the end of the COVID-19 Public Health Emergency to become 
available.
    As discussed in section III.F.5. of the preamble of this final 
rule, on July 23, 2024, the Court of Appeals for the D.C. Circuit held 
that the Secretary lacked authority under section 1886(d)(3)(E) of the 
Act or under the ``adjustments'' language of section 1886(d)(5)(I)(i) 
of the Act to adopt the low wage index hospital policy for FY 2020, and 
that the policy and related budget neutrality adjustment must be 
vacated. Bridgeport Hosp. v. Becerra, 108 F.4th 882, 887-91 & n.6 (D.C. 
Cir. 2024). After considering the D.C. Circuit's decision in Bridgeport 
Hosp. v. Becerra, in the FY 2025 IFC (89 FR 80405 through 80421), we 
recalculated the FY 2025 IPPS hospital wage index to remove the low 
wage index hospital policy for FY 2025. We also removed the low wage 
index budget neutrality factor from the FY 2025 standardized amounts. 
In addition, we established an interim transition policy for hospitals 
significantly impacted by the removal of the FY 2025 low wage index 
hospital policy using our authority under section 1886(d)(5)(I) of the 
Act. We note, as discussed elsewhere, in this final rule we are 
finalizing the provisions of the interim final action with comment 
period (IFC) (89 FR 80405) (hereinafter referred to as the FY 2025 
IFC), that implemented revised Medicare wage index values for FY 2025, 
established a transitional payment exception for low wage hospitals 
significantly impacted by those revisions, and made conforming changes 
to the hospital IPPS and LTCH PPS payment rates for FY 2025 to reflect 
the removal of the low wage index hospital policy following the 
appellate court decision in Bridgeport Hosp. v. Becerra.
    For FY 2026 and subsequent fiscal years, after considering the D.C. 
Circuit's decision in Bridgeport Hosp. v. Becerra, we are discontinuing 
the low wage index hospital policy and will no longer apply a low wage 
index budget neutrality factor to the standardized amounts. As 
discussed in section III.F.7. of the preamble of this final rule, we 
are using our authority under section 1886(d)(5)(I)(i) of the Act to 
adopt a narrow transitional exception to the calculation of FY 2026 
IPPS payments for low wage index hospitals significantly impacted by 
the discontinuation of the low wage index hospital policy, that will be 
implemented in a budget neutral manner. This transitional exception 
policy will apply to hospitals that benefitted from the FY 2024 low 
wage index hospital policy and compares the hospital's FY 2026 wage 
index to the hospital's FY 2024 wage index. If the hospital's FY 2026 
wage index is decreasing by more than 9.75 percent from the hospital's 
FY 2024 wage index, then the transitional payment exception for FY 2026 
for that hospital is equal to the additional FY 2026 amount the 
hospital would be paid under the IPPS if its FY 2026 wage index were 
equal to 90.25 percent of its FY 2024 wage index. We are making this 
policy budget neutral through an adjustment applied to the standardized 
amounts for all hospitals.
b. Update to the IPPS Labor-Related Share
    As discussed in section IV. of the preamble of this final rule, we 
are finalizing our proposal to rebase and revise the 2018-based IPPS 
market basket to reflect a 2023 base year. In addition, using the cost 
category weights from the 2023-based IPPS market basket, we calculated 
a labor-related share of 66.0 percent, which we will use for discharges 
occurring on or after October 1, 2025. The labor-related share of 66.0 
percent is 1.6 percentage points lower than the current labor-related 
share of 67.6 percent. As discussed in section IV.B.3. of the preamble 
of this final rule, this downward revision to the labor-related share 
is primarily the result of incorporating the more recent 2023 Medicare 
cost report data for Wages and Salaries, Employee Benefits, and 
Contract Labor costs. This is partially offset by an increase in the 
Professional Fees: Labor-Related cost weight.
c. Hospital Readmissions Reduction Program
    The Hospital Readmissions Reduction Program was established under 
section 1886(q) of the Act, as amended by section 15002 of the Cures 
Act. The Hospital Readmissions Reduction Program requires a reduction 
to a hospital's base operating DRG payment to account for excess 
readmissions of selected applicable conditions or procedures. In this 
final rule, we are finalizing the following proposals, beginning with 
the FY 2027 program year: (1) Refine all six readmission measures to 
add Medicare Advantage patient cohort data; (2) reduce the applicable 
period from 3-years to 2-years and update codified regulation language; 
and (4) update and codify the ECE policy to clarify that CMS has the 
discretion to grant an extension in response to an ECE request from a 
hospital with a modification. We also

[[Page 36540]]

provide notice of the technical update to remove the COVID-19 exclusion 
from all six readmission measures. We are not finalizing the proposal 
to include payment data for MA beneficiaries in the calculation of 
aggregate payments for excess readmissions..
d. Hospital Acquired Condition (HAC) Reduction Program
    Section 1886(p) of the Act establishes the HAC Reduction Program 
under which payments to applicable hospitals are adjusted to provide an 
incentive to reduce hospital-acquired conditions. In this final rule, 
we are making a technical update to the NHSN Healthcare Associated 
Infection (HAI) measures baseline. We are also finalizing our proposal 
to update and codify the ECE policy to clarify that CMS has the 
discretion to grant an extension in response to an ECE request from a 
hospital with a modification.
e. Hospital Value-Based Purchasing (VBP) Program
    Section 1886(o) of the Act requires the Secretary to establish a 
Hospital VBP Program under which value-based incentive payments are 
made in a fiscal year to hospitals based on their performance on 
measures established for a performance period for such fiscal year. In 
this final rule, we are finalizing modifications to the THA/TKA 
Complications measure beginning with the FY 2033 program year. We also 
provide notice of the technical update to remove the COVID-19 exclusion 
from the six measures in the Clinical Outcomes domain beginning with 
the FY 2027 program year and the technical update to the five NHSN 
Healthcare Associated Infection (HAI) measures beginning with the FY 
2029 program year. We also are finalizing our proposal to update and 
codify the ECE policy to clarify that CMS has the discretion to grant 
an extension in response to an ECE request from a hospital with a 
modification. We are also finalizing our proposal to remove the 
Program's HEA adjustment in the FY 2026 program year. Lastly, we 
provide previously and newly established performance standards for FY 
2027 through FY 2031 program years for the Hospital VBP Program.
f. Hospital Inpatient Quality Reporting (IQR) Program
    Under section 1886(b)(3)(B)(viii) of the Act, subsection (d) 
hospitals are required to report data on measures selected by the 
Secretary for a fiscal year in order to receive the full annual 
percentage increase. In this FY 2026 IPPS/LTCH PPS final rule, we are 
finalizing several changes to the Hospital IQR Program. We are 
finalizing modifications to four measures currently in the Hospital IQR 
Program measure set: (1) Hospital-Level, Risk-Standardized Complication 
Rate (RSCR) Following Elective Primary Total Hip Arthroplasty (THA) 
and/or Total Knee Arthroplasty (TKA) beginning with the April 1, 2023-
March 30, 2025 reporting period/2027 payment determination; (2) 
Hospital 30-Day, All-Cause, Risk-Standardized Mortality Rate (RSMR) 
Following Acute Ischemic Stroke Hospitalization with Claims-Based Risk 
Adjustment for Stroke Severity beginning with the July 1, 2023-June 30, 
2025 reporting period/2027 payment determination; (3) the Hybrid 
Hospital-Wide Readmission (HWR) measure beginning with the July 1, 
2025, through June 30, 2026 Reporting Period/FY 2028 payment 
determination; and (4) the Hybrid Hospital-Wide All-Cause Risk 
Standardized Mortality (HWM) measure beginning with the July 1, 2025, 
through June 30, 2026 reporting period/FY 2028 payment determination. 
We are also finalizing the removal of four measures: (1) the Hospital 
Commitment to Health Equity measure beginning with the CY 2024 
reporting period/FY 2026 payment determination; (2) the COVID-19 
Vaccination Coverage among HCP measure beginning with the CY 2024 
reporting period/FY 2026 payment determination; (3) the Screening for 
Social Drivers of Health measure beginning with the CY 2024 reporting 
period/FY 2026 payment determination; and (4) the Screen Positive Rate 
for Social Drivers of Health measure beginning with the CY 2024 
reporting period/FY 2026 payment determination. We are finalizing our 
proposal to update and codify the ECE policy to clarify that CMS has 
the discretion to grant an extension in response to an ECE request from 
a hospital with a modification. Additionally, we sought comments 
regarding measure concepts related to well-being and nutrition for 
future consideration. We also sought comments on the path forward for 
digital quality measurement and use of Fast Healthcare Interoperability 
Resources (FHIR).
g. PPS-Exempt Cancer Hospital Quality Reporting (PCHQR) Program
    Section 1866(k)(1) of the Act requires, for purposes of FY 2014 and 
each subsequent fiscal year, that a hospital described in section 
1886(d)(1)(B)(v) of the Act (a PPS-exempt cancer hospital, or a PCH) 
submit data in accordance with section 1866(k)(2) of the Act with 
respect to such fiscal year. In this final rule, we are finalizing our 
proposal to publicly report PCH data on both the Provider Data Catalog 
and on Care Compare and to make corresponding changes to regulatory 
text to replace references to ``Provider Data Catalog'' with ``CMS 
website''. We are also finalizing our proposals to remove the (1) 
Hospital Commitment to Health Equity, (2) the Screening for Social 
Drivers of Health measure; and (3) the Screen Positive Rate for Social 
Drivers of Health measure beginning with the CY 2024 reporting period/
FY 2026 program year. Lastly, we are finalizing our proposal to update 
and codify the ECE policy to clarify that CMS has the discretion to 
grant an extension in response to an ECE request from a hospital with a 
modification.
h. Long-Term Care Hospital Quality Reporting Program (LTCH QRP)
    For the LTCH QRP, we are finalizing our proposal to remove one item 
from the LCDS with respect to patients who have expired in the LTCH. We 
also are finalizing our proposal to removal of four SDOH standardized 
patient assessment data elements from the LCDS. We are finalizing our 
proposal to amend the reconsideration request process in the LTCH QRP. 
Finally, we include a summary of comments received in response to 
Requests for Information (RFIs) on: (1) future measure concepts for the 
LTCH QRP; (2) revisions to the data submission deadlines for assessment 
data collected for the LTCH QRP; and (3) advancing digital quality 
measurement (dQM) in the LTCH QRP.
i. Medicare Promoting Interoperability Program
    Under sections 1886(b)(3)(B)(ix) and 1814(l)(4) of the Act, 
respectively, eligible hospitals and CAHs are required to submit data 
in accordance with section 1886(n) to successfully demonstrate 
meaningful use of CEHRT for an EHR reporting period to avoid a downward 
payment adjustment under Medicare for the associated fiscal year. In 
this final rule, we are finalizing several changes to the Medicare 
Promoting Interoperability Program. Specifically, we are finalizing our 
proposals: (1) to amend the definition of ``EHR reporting period for a 
payment adjustment year'' at 42 CFR 495.4 for eligible hospitals and 
CAHs participating in the Medicare Promoting Interoperability Program 
to define the EHR reporting period in CY 2026 and subsequent years as a 
minimum of any continuous 180-day period within that calendar year; (2) 
to modify the Security Risk Analysis measure to require eligible 
hospitals and CAHs to attest

[[Page 36541]]

``yes'' to having conducted security risk management in addition to the 
existing measure requirement to attest ``yes'' to having conducted 
security risk analysis, beginning with the EHR reporting period in CY 
2026; (3) to modify the SAFER Guides measure by requiring eligible 
hospitals and CAHs to attest ``yes'' to completing an annual self-
assessment using the eight SAFER Guides published in January 2025, 
beginning with the EHR reporting period in CY 2026; and (4) to add an 
optional bonus measure to the Public Health and Clinical Data Exchange 
objective for eligible hospitals and CAHs that submit health 
information to a public health agency (PHA) using the Trusted Exchange 
Framework and Common Agreement \TM\ (TEFCA), and consistent with other 
measure requirements, beginning with the EHR reporting period in CY 
2026.
j. Transforming Episode Accountability Model (TEAM)
    In section XI.A. of the preamble of this final rule, we discuss the 
changes we finalized and considered for the Transforming Episode 
Accountability Model (TEAM). TEAM is a 5-year mandatory model that will 
be tested under the authority of section 1115A of the Act, beginning on 
January 1, 2026, and ending on December 31, 2030. We finalized changes 
to multiple areas of the model, including: (1) a limited deferment 
period for certain hospitals; (2) addressing the expiration of the 
Medicare Dependent Hospital program; (3) excluding Indian Health 
Service (IHS) hospitals from TEAM participation; (4) adding the 
Information Transfer Patient Reported Outcome-based Performance Measure 
(Information Transfer PRO-PM); (5) applying a neutral quality measure 
score for TEAM participants with insufficient quality data; (6) a 
methodology to construct target prices when there are coding changes; 
(7) reconstructing the normalization factor and prospective trend 
factor; (8) replacing the Area Deprivation Index (ADI) with the 
Community Deprivation Index (CDI); (9) using a 180-day lookback period 
and Hierarchical Condition Categories (HCC) version 28 for beneficiary 
risk adjustment; (10) eliminating downside financial risk for low 
volume hospitals; (11) aligning the date range used for episode 
attribution; (12) removing health equity plans and health related 
social needs data reporting; (13) broadening the Skilled Nursing 
Facility (SNF) 3-day rule waiver; (14) modifying the referral to 
primary care services requirement; and (15) removing the 
Decarbonization and Resilience Initiative (DRI).
k. ONC Health IT Certification Program Updates
    In the Health Data, Technology, and Interoperability: Patient 
Engagement, Information Sharing, and Public Health Interoperability 
proposed rule (HTI-2 Proposed Rule) (89 FR 63498), which appeared in 
the Federal Register on August 5, 2024, ASTP/ONC proposed a wide-
ranging set of updates to the ONC Health IT Certification Program. In 
the Health Data, Technology, and Interoperability: Electronic 
Prescribing, Real-Time Prescription Benefit and Electronic Prior 
Authorization (HTI-4 final rule), which is being published as part of 
the FY 2026 IPPS/LTCH final rule, ASTP/ONC is finalizing a limited 
subset of the proposals in the HTI-2 proposed rule. In this section, 
ASTP/ONC describes the HTI-2 proposals it is finalizing in this rule.
(1) New and Revised Standards and Certification Criteria
(a) Minimum Standards Code Sets Updates
    In section III.B.5 of the preamble of the HTI-2 Proposed Rule, 
ASTP/ONC proposed to adopt an updated baseline version of RxNorm, 
identified as a minimum standard code set, in 45 CFR 170.207(d) 
(Medications), and to reorganize the text of the regulation in 45 CFR 
170.207(d). RxNorm is referenced in the ``electronic prescribing'' and 
``real-time prescription benefit'' health IT certification criteria 
ASTP/ONC is also finalizing in this final rule. ASTP/ONC is finalizing 
these proposals in section XI.B.4.b.(2) of the preamble of this final 
rule, with modifications. Consistent with 45 CFR 170.555, health IT 
developers may use newer versions of the adopted baseline version of a 
standard identified as a minimum standard on a voluntary basis.
(b) Revised Electronic Prescribing Certification Criterion
    As discussed in section XI.B.4.b.(3) of the preamble of this final 
rule, ASTP/ONC is finalizing proposed updates in the HTI-2 Proposed 
Rule to the ``electronic prescribing'' criterion in 45 CFR 
170.315(b)(3), with modifications. ASTP/ONC is finalizing that, for 
technology certified to the criterion in 45 CFR 170.315(b)(3) 
subsequent to June 30, 2020, health IT developers must update the 
Health IT Module to use the National Council for Prescription Drug 
Programs (NCPDP) SCRIPT standard version 2023011 and provide that 
update to their customers in order to maintain certification of the 
Health IT Module, by January 1, 2028. For the time period up to and 
including December 31, 2027, ASTP/ONC is finalizing that developers 
certifying a Health IT Module to 45 CFR 170.315(b)(3) may use either 
the updated NCPDP SCRIPT standard version 2023011 or the NCPDP SCRIPT 
standard version 2017071. ASTP/ONC is also finalizing that any Health 
IT Modules for which a health IT developer seeks certification to the 
updated criterion using NCPDP SCRIPT standard version 2023011 would 
need to support electronic prior authorization transactions in 
accordance with the standard. Finally, ASTP/ONC is finalizing a series 
of additional updates to 45 CFR[thinsp]170.315(b)(3)(ii), including 
removing transactions currently identified as optional for the 
certification criterion.
(c) New Real-Time Prescription Benefit Criterion
    As discussed in section XI.B.4.b.(4) of the preamble of this final 
rule, ASTP/ONC is finalizing the proposal in the HTI-2 Proposed Rule to 
adopt a ``real-time prescription benefit'' certification criterion in 
45 CFR[thinsp]170.315(b)(4), with modifications. Real-time prescription 
benefit tools empower providers and their patients to compare the 
patient-specific cost of a drug to the cost of a suitable alternative, 
compare prescription costs at different pharmacies, view information 
about out-of-pocket costs, and learn whether prior authorization for a 
specific drug is required. The certification criterion ASTP/ONC is 
finalizing is based on the NCPDP Real-Time Prescription Benefit (RTPB) 
standard version 13. ASTP/ONC is also finalizing a proposal to include 
this certification criterion in the Base EHR definition in 45 
CFR[thinsp]170.102 after January 1, 2028. ASTP/ONC is finalizing these 
policies in order to implement section 119(b)(3) of Title I of the 
Consolidated Appropriations Act, 2021 (Pub. L. 116-260).
(d) New Certification Criteria for Modular API Capabilities
    As discussed in section XI.B.4.b.(5) of the preamble of this final 
rule, ASTP/ONC is finalizing two health IT certification criteria for 
``modular API capabilities'' proposed in the HTI-2 Proposed Rule. 
Specifically, ASTP/ONC is finalizing certification criteria in 45 CFR 
170.315(j)(20), ``Workflow triggers for decision support 
interventions,'' and 45 CFR 170.315(j)(21), ``Subscriptions--client,'' 
both of which are cross-referenced by other certification criteria 
ASTP/ONC is finalizing to support electronic prior authorization.

[[Page 36542]]

(e) New Certification Criteria for Electronic Prior Authorization
    In section III.B.20 of the preamble of the HTI-2 Proposed Rule, 
ASTP/ONC proposed to adopt a ``prior authorization API--provider'' 
criterion in 45 CFR 170.315(g)(34). ASTP/ONC also proposed to adopt a 
set of HL7[supreg] FHIR[supreg] implementation guides (IGs) in 45 CFR 
170.215 for HHS use, including IGs referenced as part of the proposed 
criterion for electronic prior authorization and other IGs that support 
interoperable exchange of information between payers, providers, and 
patients.
    In section XI.B.4.b.(5) of the preamble of this final rule, ASTP/
ONC is finalizing three certification criteria in 45 CFR 
170.315(g)(31), (32), and (33) for electronic prior authorization that 
are based on the requirements originally proposed in 45 CFR 
170.315(g)(34), with modifications. ASTP/ONC is also finalizing 
adoption of the IGs proposed in section III.B.20 and incorporating 
these specifications by reference in 45 CFR 170.299.
    ASTP/ONC is finalizing these criteria to make available Health IT 
Modules that can enable health care providers to conduct prior 
authorization transactions using payer APIs established by CMS in the 
Interoperability and Prior Authorization rule (89 FR 8758). Use of 
these Health IT Modules will also support providers and clinicians 
participating in the Promoting Interoperability programs and MIPS 
Promoting Interoperability performance category required to report on 
Electronic Prior Authorization measures.
3. Summary of Costs and Benefits
    The following table provides a summary of the costs, savings, and 
benefits associated with the major provisions described in section 
I.A.2. of the preamble of this final rule.
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BILLING CODE 4120-01-C

B. Background Summary

1. Acute Care Hospital Inpatient Prospective Payment System (IPPS)
    Section 1886(d) of the Act sets forth a system of payment for the 
operating costs of acute care hospital inpatient stays under Medicare 
Part A (Hospital Insurance) based on prospectively set rates. Section 
1886(g) of the Act requires the Secretary to use a prospective payment 
system (PPS) to pay for the capital-related costs of inpatient hospital 
services for these ``subsection (d) hospitals.'' Under these PPSs, 
Medicare payment for hospital inpatient operating and capital-related 
costs is made at predetermined, specific rates for each hospital 
discharge. Discharges are classified according to a list of diagnosis-
related groups (DRGs).
    The base payment rate is comprised of a standardized amount that is 
divided into a labor-related share and a nonlabor-related share. The 
labor-related share is adjusted by the wage index applicable to the 
area where the hospital is located. If the hospital is located in 
Alaska or Hawaii, the nonlabor-related share is adjusted by a cost-of-
living adjustment (COLA) factor. This base payment rate is multiplied 
by the DRG relative weight.
    If the hospital treats a high percentage of certain low-income 
patients, it receives a percentage add-on payment applied to the DRG-
adjusted base payment rate. This add-on payment, known as the 
disproportionate share hospital (DSH) adjustment, provides for a 
percentage increase in Medicare payments to hospitals that qualify 
under either of two statutory formulas designed to identify hospitals 
that serve a disproportionate share of low-income patients. For 
qualifying hospitals, the amount of this adjustment varies based on the 
outcome of the statutory calculations. The Affordable Care Act revised 
the Medicare DSH payment methodology and provides for an additional 
Medicare payment beginning on October 1, 2013, that considers the 
amount of uncompensated care furnished by the hospital relative to all 
other qualifying hospitals.
    If the hospital is training residents in an approved residency 
program(s), it receives a percentage add-on payment for each case paid 
under the IPPS, known as the indirect medical education (IME) 
adjustment. This percentage varies, depending on the ratio of residents 
to beds.
    Additional payments may be made for cases that involve new 
technologies or medical services that have been approved for special 
add-on payments. In general, to qualify, a new technology or medical 
service must demonstrate that it is a substantial clinical improvement 
over technologies or services otherwise available, and that, absent an 
add-on payment, it would be inadequately paid under the regular DRG 
payment. In addition, certain transformative new devices and certain 
antimicrobial products may qualify under an alternative inpatient new 
technology add-on payment pathway by demonstrating that, absent an add-
on payment, they would be inadequately paid under the regular DRG 
payment.
    The costs incurred by the hospital for a case are evaluated to 
determine whether the hospital is eligible for an additional payment as 
an outlier case. This additional payment is designed to protect the 
hospital from large financial losses due to unusually expensive cases. 
Any eligible outlier payment is added to the DRG-adjusted base payment 
rate, plus any DSH, IME, and new technology or medical service add-on 
adjustments and, beginning in FY 2023 for IHS and Tribal hospitals and 
hospitals located in Puerto Rico, the new supplemental payment.
    Although payments to most hospitals under the IPPS are made on the 
basis of the standardized amounts, some categories of hospitals are 
paid in whole or in part based on their hospital-specific rate, which 
is determined from their costs in a base year. For example, sole 
community hospitals (SCHs) receive the higher of a hospital-specific 
rate based on their costs in a base year (the highest of FY 1982, FY 
1987, FY 1996, or FY 2006) or the IPPS Federal rate based on the 
standardized amount. SCHs are the sole source of care in their areas. 
Specifically, section 1886(d)(5)(D)(iii) of the Act defines an SCH as a 
hospital that is located more than 35 road miles from another hospital 
or that, by reason of factors such as an isolated location, weather 
conditions, travel conditions, or absence of other like hospitals (as 
determined by the Secretary), is the sole source of hospital inpatient 
services reasonably available to Medicare beneficiaries. In addition, 
certain rural hospitals previously designated by the Secretary as 
essential access community hospitals are considered SCHs.
    With the recent enactment of section 2202 of the Full-Year 
Continuing Appropriations and Extensions Act, 2025, under current law, 
the Medicare-dependent, small rural hospital (MDH) program is effective 
through September 30, 2025. For discharges occurring on or after 
October 1, 2007, but before October 1, 2025, an MDH receives the higher 
of the Federal rate or the Federal rate plus 75 percent of the amount 
by which the Federal rate is exceeded by the highest of its FY 1982, FY 
1987, or FY 2002 hospital-specific rate. MDHs are a major source of 
care for Medicare beneficiaries in their areas. Section 
1886(d)(5)(G)(iv) of the Act defines an MDH as a hospital that is 
located in a rural area (or, as amended by the Bipartisan Budget Act of 
2018, a hospital located in a State with no rural area that meets 
certain statutory criteria), has not more than 100 beds, is not an SCH, 
and has a high percentage of Medicare discharges (not less than 60 
percent of its inpatient days or discharges in its cost reporting year 
beginning in FY 1987 or in two of its three most recently settled 
Medicare cost reporting years). As section 2202 of the Full-Year 
Continuing Appropriations and Extensions Act, 2025 extended the MDH 
program through FY 2025 only, beginning on October 1, 2025, the MDH 
program will no longer be in effect absent a change in law. Because the 
MDH program is not authorized by statute beyond September 30, 2025, 
beginning October 1, 2025, all hospitals that previously qualified for 
MDH status under section 1886(d)(5)(G) of the Act will no longer have 
MDH status and will be paid based on the IPPS Federal rate.
    Section 1886(g) of the Act requires the Secretary to pay for the 
capital-related costs of inpatient hospital services in accordance with 
a prospective payment system established by the Secretary. The basic 
methodology for determining capital prospective payments is set forth 
in our regulations at 42 CFR 412.308 and 412.312. Under the capital 
IPPS, payments are adjusted by the same DRG for the case as they are 
under the operating IPPS. Capital IPPS payments are also adjusted for 
IME and DSH, similar to the adjustments made under the operating IPPS. 
In addition, hospitals may receive outlier payments for those cases 
that have unusually high costs.
    The existing regulations governing payments to hospitals under the 
IPPS are located in 42 CFR part 412, subparts A through M.
2. Hospitals and Hospital Units Excluded From the IPPS
    Under section 1886(d)(1)(B) of the Act, as amended, certain 
hospitals and hospital units are excluded from the IPPS. These 
hospitals and units are: Inpatient rehabilitation facility (IRF) 
hospitals and units; long-term care hospitals (LTCHs); Inpatient 
psychiatric hospitals (IPF) and units; children's hospitals; cancer 
hospitals; extended neoplastic disease care hospitals, and hospitals 
located outside the 50 States,

[[Page 36546]]

the District of Columbia, and Puerto Rico (that is, hospitals located 
in the U.S. Virgin Islands, Guam, the Northern Mariana Islands, and 
American Samoa). Religious nonmedical health care institutions (RNHCIs) 
are also excluded from the IPPS. Various sections of the Balanced 
Budget Act of 1997 (BBA) (Pub. L. 105-33), the Medicare, Medicaid and 
SCHIP [State Children's Health Insurance Program] Balanced Budget 
Refinement Act of 1999 (BBRA, Pub. L. 106-113), and the Medicare, 
Medicaid, and SCHIP Benefits Improvement and Protection Act of 2000 
(BIPA, Pub. L. 106-554) provide for the implementation of PPSs for IRF 
hospitals and units, LTCHs, and psychiatric hospitals and units 
(referred to as inpatient psychiatric facilities (IPFs)). (We note that 
the annual updates to the LTCH PPS are included along with the IPPS 
annual update in this document. Updates to the IRF PPS and IPF PPS are 
issued as separate documents.) Children's hospitals, cancer hospitals, 
hospitals located outside the 50 States, the District of Columbia, and 
Puerto Rico (that is, hospitals located in the U.S. Virgin Islands, 
Guam, the Northern Mariana Islands, and American Samoa), and RNHCIs 
continue to be paid solely under a reasonable cost-based system, 
subject to a rate-of-increase ceiling on inpatient operating costs. 
Similarly, extended neoplastic disease care hospitals are paid on a 
reasonable cost basis, subject to a rate-of-increase ceiling on 
inpatient operating costs.
    The existing regulations governing payments to excluded hospitals 
and hospital units are located in 42 CFR parts 412 and 413.
3. Long-Term Care Hospital Prospective Payment System (LTCH PPS)
    The Medicare prospective payment system (PPS) for LTCHs applies to 
hospitals described in section 1886(d)(1)(B)(iv) of the Act, effective 
for cost reporting periods beginning on or after October 1, 2002. The 
LTCH PPS was established under the authority of sections 123 of the 
BBRA and section 307(b) of the BIPA (as codified under section 
1886(m)(1) of the Act). Section 1206(a) of the Pathway for SGR Reform 
Act of 2013 (Pub. L. 113-67) established the site neutral payment rate 
under the LTCH PPS, which made the LTCH PPS a dual rate payment system 
beginning in FY 2016. Under this statute, effective for LTCH's cost 
reporting periods beginning in FY 2016 cost reporting period, LTCHs are 
generally paid for discharges at the site neutral payment rate unless 
the discharge meets the patient criteria for payment at the LTCH PPS 
standard Federal payment rate. The existing regulations governing 
payment under the LTCH PPS are located in 42 CFR part 412, subpart O. 
Beginning October 1, 2009, we issue the annual updates to the LTCH PPS 
in the same documents that update the IPPS.
4. Critical Access Hospitals (CAHs)
    Under sections 1814(l), 1820, and 1834(g) of the Act, payments made 
to critical access hospitals (CAHs) (that is, rural hospitals or 
facilities that meet certain statutory requirements) for inpatient and 
outpatient services are generally based on 101 percent of reasonable 
cost. Reasonable cost is determined under the provisions of section 
1861(v) of the Act and existing regulations under 42 CFR part 413.
5. Payments for Graduate Medical Education (GME)
    Under section 1886(a)(4) of the Act, costs of approved educational 
activities are excluded from the operating costs of inpatient hospital 
services. Hospitals with approved graduate medical education (GME) 
programs are paid for the direct costs of GME in accordance with 
section 1886(h) of the Act. The amount of payment for direct GME costs 
for a cost reporting period is based on the hospital's number of 
residents in that period and the hospital's costs per resident in a 
base year. The existing regulations governing payments to the various 
types of hospitals are located in 42 CFR part 413. Section 
1886(d)(5)(B) of the Act provides that prospective payment hospitals 
that have residents in an approved GME program receive an additional 
payment for each Medicare discharge to reflect the higher patient care 
costs of teaching hospitals relative to non-teaching hospitals. The 
additional payment is based on the indirect medical education (IME) 
adjustment factor, which is calculated using a hospital's ratio of 
residents to beds and a multiplier, which is set by Congress. Section 
1886(d)(5)(B)(ii)(XII) of the Act provides that, for discharges 
occurring during FY 2008 and fiscal years thereafter, the IME formula 
multiplier is 1.35. The regulations regarding the indirect medical 
education (IME) adjustment are located at 42 CFR 412.105.

C. Summary of Provisions of Recent Legislation That Are Implemented in 
This Final Rule

1. The Full-Year Continuing Appropriations and Extensions Act, 2025 
(Pub. L. 119-4)
    Section 2201 of the Full-Year Continuing Appropriations and 
Extensions Act, 2025 extended through FY 2025 the modified definition 
of a low-volume hospital and the methodology for calculating the 
payment adjustment for low-volume hospitals that had been in effect for 
FYs 2019 through 2024. Specifically, under section 1886(d)(12)(C)(i) of 
the Act, as amended, for FYs 2019 through 2025, a subsection (d) 
hospital qualifies as a low-volume hospital if it is more than 15 road 
miles from another subsection (d) hospital and has less than 3,800 
total discharges during the fiscal year. Under section 1886(d)(12)(D) 
of the Act, as amended, for discharges occurring in FYs 2019 through 
September 30, 2025, the Secretary determines the applicable percentage 
increase using a continuous, linear sliding scale ranging from an 
additional 25 percent payment adjustment for low-volume hospitals with 
500 or fewer discharges to a zero percent additional payment for low-
volume hospitals with more than 3,800 discharges in the fiscal year.
    Section 2202 of the Full-Year Continuing Appropriations and 
Extensions Act, 2025 amended sections 1886(d)(5)(G)(i) and 
1886(d)(5)(G)(ii)(II) of the Act to provide for an extension of the MDH 
program through FY 2025 (that is, through September 30, 2025).

D. Issuance of a Notice of Proposed Rulemaking and Summary of the 
Proposed Provisions

    The FY 2026 IPPS/LTCH PPS proposed rule appeared in the April 30, 
2025, Federal Register (90 FR 18002). In the proposed rule, we set 
forth proposed payment and policy changes to the Medicare IPPS for FY 
2026 operating costs and capital-related costs of acute care hospitals 
and certain hospitals and hospital units that are excluded from IPPS. 
In addition, we set forth proposed changes to the payment rates, 
factors, and other payment and policy-related changes to programs 
associated with payment rate policies under the LTCH PPS for FY 2026.
    The following is a general summary of the changes that we proposed 
to make.
1. Proposed Changes to MS-DRG Classifications and Recalibrations of 
Relative Weights
    In section II. of the preamble of the proposed rule, we included 
the following:
    <bullet> Proposed changes to MS-DRG classifications based on our 
yearly review for FY 2026.
    <bullet> Proposed recalibration of the MS-DRG relative weights.
    <bullet> A discussion of the proposed FY 2026 status of new 
technologies approved for add-on payments for FY

[[Page 36547]]

2025, a presentation of our evaluation and analysis of the FY 2026 
applicants for add-on payments for high-cost new medical services and 
technologies (including public input, as directed by the Medicare 
Prescription Drug, Improvement, and Modernization Act of 2003 (MMA) 
Public Law 108-173, obtained in a town hall meeting for applications 
not submitted under an alternative pathway), and a discussion of the 
proposed status of FY 2026 new technology applicants under the 
alternative pathways for certain medical devices and certain 
antimicrobial products.
2. Proposed Changes to the Hospital Wage Index for Acute Care Hospitals
    In section III. of the preamble of the proposed rule, we proposed 
revisions to the wage index for acute care hospitals and the annual 
update of the wage data. Specific issues addressed include, but are not 
limited to, the following:
    <bullet> The proposed FY 2026 wage index update using wage data 
from cost reporting periods beginning in FY 2022.
    <bullet> Calculation, analysis, and implementation of the proposed 
occupational mix adjustment to the wage index for acute care hospitals 
for FY 2026 based on the 2022 Occupational Mix Survey.
    <bullet> Proposed application of the rural, imputed and frontier 
State floors, and proposed transition for the discontinuation of the 
low wage index hospital policy.
    <bullet> Proposed revisions to the wage index for acute care 
hospitals, based on hospital redesignations and reclassifications under 
sections 1886(d)(8)(B), (d)(8)(E), and (d)(10) of the Act.
    <bullet> Proposed adjustment to the wage index for acute care 
hospitals for FY 2026 based on commuting patterns of hospital employees 
who reside in a county and work in a different area with a higher wage 
index.
    <bullet> Proposed labor-related share for applying the FY 2026 wage 
index.
3. Proposed Rebasing and Revising of the IPPS Market Baskets
    In section IV. of the preamble of the proposed rule, we proposed to 
rebase and revise the IPPS market baskets to reflect a 2023 base year. 
In section IV.B.3. of the preamble of the proposed rule, using the cost 
category weights from the proposed 2023-based IPPS market basket, we 
proposed to use a labor-related share of 66.0 percent for the national 
standardized amounts for all IPPS hospitals (including hospitals in 
Puerto Rico) that have a wage index value that is greater than 1.0000.
4. Payment Adjustment for Medicare Disproportionate Share Hospitals 
(DSHs) for FY 2026
    In section V. of the preamble of the proposed rule, we discussed 
the following:
    <bullet> Proposed calculation of Factor 1 and Factor 2 of the 
uncompensated care payment methodology.
    <bullet> Proposed methodological approach for determining Factor 3 
of the uncompensated care payment for FY 2026, which is the same 
methodology that was used for FY 2025.
    <bullet> Proposed methodological approach for determining the 
amount of interim uncompensated care payments, using the average of the 
most recent 3 years of discharge data.
5. Other Decisions and Proposed Changes to the IPPS for Operating Costs
    In section VI. of the preamble of the proposed rule, we discussed 
proposed changes or clarifications of a number of the provisions of the 
regulations in 42 CFR parts 412 and 413, including the following:
    <bullet> Proposed inpatient hospital market basket update for FY 
2026.
    <bullet> Proposed updated national and regional case-mix values and 
discharges for purposes of determining RRC status.
    <bullet> Proposed conforming amendments to reflect the statutory 
extension of the temporary changes to the low-volume hospital payment 
adjustment through September 30, 2025.
    <bullet> Proposed conforming amendments to reflect the statutory 
extension of the MDH program through September 30, 2025.
    <bullet> A direct graduate medical education (GME) and indirect 
medical education (IME) policy proposal for calculating full-time 
equivalent counts and caps for cost reporting periods other than 12 
months; and a notice of closure of two teaching hospitals and 
opportunities to apply for available slots.
    <bullet> Proposed nursing and allied health education (NAHE) 
program Medicare Advantage (MA) add-on rates and direct GME MA percent 
reductions for CY 2024; and proposed regulatory changes regarding the 
calculation of net cost of NAHE.
    <bullet> Proposed update to and revision to the payment adjustment 
for certain immunotherapy cases.
    <bullet> Proposed changes to the requirements of the Hospital 
Readmissions Reduction Program--Updating the proposed estimate of the 
financial impacts for the FY 2026 Hospital Readmissions Reduction 
Program.
    <bullet> Proposed changes to the requirements of the Hospital 
Value-Based Purchasing Program--Updating the proposed estimate of the 
financial impacts for the FY 2026 Hospital Value-Based Purchasing 
Program.
    <bullet> Proposed changes to the requirements of the Hospital-
Acquired Conditions Reduction Program--Updating the proposed estimate 
of the financial impacts for the FY 2026 Hospital-Acquired Conditions 
Reduction Program.
    <bullet> Discussion of and proposed changes relating to the 
implementation of the Rural Community Hospital Demonstration Program in 
FY 2025.
6. Proposed FY 2026 Policy Governing the IPPS for Capital-Related Costs
    In section VII. of the preamble of the proposed rule, we discussed 
the proposed payment policy requirements for capital-related costs and 
capital payments to hospitals for FY 2026.
7. Proposed Changes to the Payment Rates for Certain Excluded 
Hospitals: Rate-of-Increase Percentages
    In section VIII. of the preamble of the proposed rule, we discussed 
the following:
    <bullet> Proposed changes to payments to certain excluded hospitals 
for FY 2026.
    <bullet> Proposed continued implementation of the Frontier 
Community Health Integration Project (FCHIP) Demonstration.
8. Proposed Changes to the LTCH PPS
    In section IX. of the preamble of the proposed rule, we set forth 
proposed changes to the LTCH PPS Federal payment rates, factors, and 
other payment rate policies under the LTCH PPS for FY 2026.
9. Proposed Changes Relating to Quality Data Reporting for Specific 
Providers and Suppliers
    In section X. of the preamble of the proposed rule, we addressed 
the following:
    <bullet> Solicitation of comment on adopting measures across the 
hospital quality reporting and value-based purchasing programs which 
capture more forms of unplanned post-acute care and encourage hospitals 
to improve discharge processes.
    <bullet> Proposed changes to the requirements for the Hospital IQR 
Program.
    <bullet> Proposed changes to the requirements for the PCHQR 
Program.
    <bullet> Proposed changes to the requirements for the LTCH QRP, and 
requests for information on future measure concepts, revisions to the 
data

[[Page 36548]]

submission deadlines for assessment data collection, and advancing 
digital quality measurement (dQM) in the LTCH QRP.
    <bullet> Proposed changes to requirements pertaining to eligible 
hospitals and CAHs participating in the Medicare Promoting 
Interoperability Program.
10. Other Proposals and Comment Solicitations Included in the Proposed 
Rule
    Section XI. of the preamble of the proposed rule included proposed 
changes to TEAM that would affect participation, quality measure and 
assessment, pricing methodology, health data reporting, waivers of 
Medicare Program requirements, and the Decarbonization and Resilience 
Initiative.
11. Other Provisions of the Proposed Rule
    Section XII.A. of the preamble of the proposed rule includes our 
discussion of the MedPAC Recommendations.
    Section XII.B. of the preamble of the proposed rule includes a 
descriptive listing of the public use files associated with the 
proposed rule.
    Section XIII. of the preamble of the proposed rule includes the 
collection of information requirements for entities based on our 
proposals.
    Section XIV. of the preamble of the proposed rule includes 
information regarding our responses to public comments.
12. Determining Prospective Payment Operating and Capital Rates and 
Rate-of-Increase Limits for Acute Care Hospitals
    In sections II. and III. of the Addendum of the proposed rule, we 
set forth proposed changes to the amounts and factors for determining 
the proposed FY 2026 prospective payment rates for operating costs and 
capital-related costs for acute care hospitals, including cost-of-
living adjustment (COLA) factors for IPPS hospitals located in Alaska 
and Hawaii. We proposed to establish the threshold amounts for outlier 
cases. In addition, in section IV. of the Addendum of the proposed 
rule, we addressed the proposed update factors for determining the 
rate-of-increase limits for cost reporting periods beginning in FY 2026 
for certain hospitals excluded from the IPPS.
13. Determining Prospective Payment Rates for LTCHs
    In section V. of the Addendum of the proposed rule, we set forth 
proposed changes to the amounts and factors for determining the 
proposed FY 2026 LTCH PPS standard Federal payment rate and other 
factors used to determine LTCH PPS payments under both the LTCH PPS 
standard Federal payment rate and the site neutral payment rate in FY 
2026. We proposed to establish the adjustments for the wage index, 
labor-related share, the cost-of-living adjustment, and high-cost 
outliers, including the applicable fixed-loss amounts and the LTCH 
cost-to-charge ratios (CCRs) for both payment rates.
14. Impact Analysis
    In Appendix A of the proposed rule, we set forth an analysis of the 
impact the proposed changes would have on affected acute care 
hospitals, LTCHs, and other entities.
15. Recommendation of Update Factors for Operating Cost Rates of 
Payment for Hospital Inpatient Services
    In Appendix B of the proposed rule, as required by sections 
1886(e)(4) and (e)(5) of the Act, we provided our recommendations of 
the appropriate percentage changes for FY 2026 for the following:
    <bullet> A single average standardized amount for all areas for 
hospital inpatient services paid under the IPPS for operating costs of 
acute care hospitals (and hospital-specific rates applicable to SCHs 
and MDHs).
    <bullet> Target rate-of-increase limits to the allowable operating 
costs of hospital inpatient services furnished by certain hospitals 
excluded from the IPPS.
    <bullet> The LTCH PPS standard Federal payment rate and the site 
neutral payment rate for hospital inpatient services provided for LTCH 
PPS discharges.
16. Discussion of Medicare Payment Advisory Commission Recommendations
    Under section 1805(b) of the Act, MedPAC is required to submit a 
report to Congress, no later than March 15 of each year, in which 
MedPAC reviews and makes recommendations on Medicare payment policies. 
MedPAC's March 2025 recommendations concerning hospital inpatient 
payment policies address the update factor for hospital inpatient 
operating costs and capital-related costs for hospitals under the IPPS. 
We addressed these recommendations in Appendix B of the proposed rule. 
For further information relating specifically to the MedPAC March 2025 
report or to obtain a copy of the report, contact MedPAC at (202) 220-
3700 or visit MedPAC's website at <a href="https://www.medpac.gov">https://www.medpac.gov</a>.

E. Public Comments Received in Response to the FY 2026 IPPS/LTCH PPS 
Proposed Rule

    We received approximately 5,409 timely pieces of correspondence 
containing multiple comments on the proposed rule that appeared in the 
April 30, 2025 Federal Register (89 FR 18002) titled ``Medicare 
Program; Hospital Inpatient Prospective Payment Systems for Acute Care 
Hospitals and the Long- Term Care Hospital Prospective Payment System 
and Policy Changes and Fiscal Year 2026 Rates; Requirements for Quality 
Programs; and Other Policy Changes'' (hereinafter referred to as the FY 
2026 IPPS/LTCH PPS proposed rule). We note that some of these public 
comments were outside of the scope of the proposed rule. These out-of-
scope public comments are not addressed with policy responses in this 
final rule. Summaries of the public comments that are within the scope 
of the proposed rule and our responses to those public comments are set 
forth in the various sections of this final rule under the appropriate 
heading.

II. Changes to Medicare Severity Diagnosis-Related Group (MS-DRG) 
Classifications and Relative Weights

A. Background

    Section 1886(d) of the Act specifies that the Secretary shall 
establish a classification system (referred to as diagnosis-related 
groups (DRGs)) for inpatient discharges and adjust payments under the 
IPPS based on appropriate weighting factors assigned to each DRG. 
Therefore, under the IPPS, Medicare pays for inpatient hospital 
services on a rate per discharge basis that varies according to the DRG 
to which a beneficiary's stay is assigned. The formula used to 
calculate payment for a specific case multiplies an individual 
hospital's payment rate per case by the weight of the DRG to which the 
case is assigned. Each DRG weight represents the average resources 
required to care for cases in that particular DRG, relative to the 
average resources used to treat cases in all DRGs.
    Section 1886(d)(4)(C) of the Act requires that the Secretary adjust 
the DRG classifications and relative weights at least annually to 
account for changes in resource consumption. These adjustments are made 
to reflect changes in treatment patterns, technology, and any other 
factors that may change the relative use of hospital resources.

[[Page 36549]]

B. Adoption of the MS-DRGs and MS-DRG Reclassifications

    For information on the adoption of the MS-DRGs in FY 2008, we refer 
readers to the FY 2008 IPPS final rule with comment period (72 FR 47140 
through 47189).
    For general information about the MS-DRG system, including yearly 
reviews and changes to the MS-DRGs, we refer readers to the previous 
discussions in the FY 2010 IPPS/RY 2010 LTCH PPS final rule (74 FR 
43764 through 43766) and the FYs 2011 through 2025 IPPS/LTCH PPS final 
rules (75 FR 50053 through 50055; 76 FR 51485 through 51487; 77 FR 
53273; 78 FR 50512; 79 FR 49871; 80 FR 49342; 81 FR 56787 through 
56872; 82 FR 38010 through 38085; 83 FR 41158 through 41258; 84 FR 
42058 through 42165; 85 FR 58445 through 58596; 86 FR 44795 through 
44961; 87 FR 48800 through 48891; 88 FR 58654 through 58787; and 89 FR 
69000 through 69109, respectively). For discussion regarding our 
previously finalized policies (including our historical adjustments to 
the payment rates) relating to the effect of changes in documentation 
and coding that do not reflect real changes in case mix, we refer 
readers to the FY 2023 IPPS/LTCH PPS final rule (87 FR 48799 through 
48800).
    Comment: A commenter summarized the statutory and regulatory 
history regarding the documentation and coding recoupment adjustments 
required under section (7)(b) of the TMA, Abstinence Education, and QI 
Programs Extension Act of 2007 (Pub. L. 110-90), as amended. The 
commenter reiterated its position that the total level of adjustments 
made by CMS under this section took back more than was authorized by 
Congress and stated that section 7(b)(2) of Public Law 110-90 requires 
CMS to increase the standardized amount by 0.9412% to avoid carrying 
over into FY 2026 the -3.9% reduction to the standardized amount that 
law required between FY 2013 and FY 2017.
    Response: As of FY 2023, CMS completed the statutory requirements 
of section 7(b)(1)(B) of Public Law 110-90 as amended by section 631 of 
the American Taxpayer Relief Act of 2012 (ATRA, Pub. L. 112-240), 
section 404 of the Medicare Access and CHIP Reauthorization Act of 2015 
(MACRA) (Pub. L. 114-10), and section 15005 of the 21st Century Cures 
Act (Pub. L. 114-255). As we discussed in the FY 2022 IPPS/LTCH PPS 
final rule (86 FR 44794 through 44795), the FY 2021 IPPS/LTCH PPS final 
rule (85 FR 58444 through 58445) and in prior rules, we believe section 
414 of the MACRA and section 15005 of the 21st Century Cures Act set 
forth the levels of positive adjustments for FYs 2018 through 2023. 
Those adjustments added up to +2.9488 percentage points, not +3.9 
percentage points, and we see no evidence that Congress enacted that 
smaller adjustment schedule with the silent intent that CMS would later 
make a permanent 0.9412% payment adjustment to reach a total +3.9 
percentage point adjustment. To the contrary, section 414 of MACRA 
instructs the agency to ``not make the adjustment (estimated to be an 
increase of 3.2 percent) that would otherwise apply for discharges 
occurring during fiscal year 2018 by reason of the completion of the 
adjustments required under clause (ii).'' Because the adjustment ``that 
would otherwise apply'' in fiscal year 2018 but for clause (1)(B)(iii) 
was +3.9%, the commenter's suggestion to complete making that 
adjustment now is inconsistent with the statute's text.
    Subparagraph (b)(2) of Public Law 110-90 does not compel a contrary 
result. As the U.S. Court of Appeals for the D.C. Circuit has 
explained, that provision simply requires CMS ``to ignore recoupment 
adjustments'' when ``calculat[ing] and apply[ing] the annual 
`percentage increase' '' to base rates provided for in the Medicare 
statute to account for inflation. Fresno Community Hospital & Medical 
Center v. Cochran, 987 F.3d 158, 163 (D.C. Cir. 2021). The Secretary 
has complied with that instruction. Similarly, the commenter's 
citations to statements the agency made in the Federal Register about 
its intent to unwind the reductions to the standardized amount the 
agency made between FY 2013 and FY 2017 were made before Congress 
passed clause (1)(B)(iii) and have been countermanded by that 
provision. We therefore decline the commenter's suggestion to read into 
section 7(b) of Public Law 110-90 implied authority to increase the 
standardized payment amount by 0.9412%.

C. Changes to Specific MS-DRG Classifications

1. Discussion of Changes to Coding System and Basis for FY 2026 MS-DRG 
Updates
a. International Classification of Diseases, 10th Revision (ICD-10)
    Providers use the International Classification of Diseases, 10th 
Revision (ICD-10) coding system to report diagnoses and procedures for 
Medicare hospital inpatient services under the MS-DRG system. The ICD-
10 coding system includes the International Classification of Diseases, 
10th Revision, Clinical Modification (ICD-10-CM) for diagnosis coding 
and the International Classification of Diseases, 10th Revision, 
Procedure Coding System (ICD-10-PCS) for inpatient hospital procedure 
coding, as well as the ICD-10-CM and ICD-10-PCS Official Guidelines for 
Coding and Reporting.
b. Basis for FY 2026 MS-DRG Updates
    The deadline for interested parties to submit MS-DRG classification 
change requests for FY 2026 was October 20, 2024. All requests are 
submitted to CMS via Medicare Electronic Application Request 
Information System<SUP>TM</SUP> (MEARIS<SUP>TM</SUP>), accessed at 
<a href="https://mearis.cms.gov">https://mearis.cms.gov</a>. Specifically, as indicated on the 
MEARIS<SUP>TM</SUP> site, the MS-DRG classification change request 
process may be used for requests to create, modify, or delete MS-DRGs, 
change ICD-10-CM diagnosis code(s) severity level designations, change 
ICD-10-PCS procedure code(s) Operating Room (O.R.) designations, or to 
review the CC Exclusions List or the surgical hierarchy.
    Within MEARIS<SUP>TM</SUP>, we have built in several resources to 
support users, including a ``Resources'' section available at <a href="https://mearis.cms.gov/public/resources">https://mearis.cms.gov/public/resources</a> with technical support available under 
``Useful Links'' at the bottom of the MEARIS<SUP>TM</SUP> site. 
Questions regarding the MEARIS<SUP>TM</SUP> system can be submitted to 
CMS using the form available under ``Contact'', also at the bottom of 
the MEARIS<SUP>TM</SUP> site.
    We note that the burden associated with this information collection 
requirement is the time and effort required to collect and submit the 
data in the request for MS-DRG classification changes to CMS. The 
aforementioned burden is subject to the Paperwork Reduction Act (PRA) 
of 1995 and approved under OMB control number 0938-1431 and has an 
expiration date of 09/30/2025.
    Interested parties should submit any MS-DRG classification change 
requests, including any comments and suggestions for FY 2027 
consideration by October 20, 2025 via MEARIS<SUP>TM</SUP> at: <a href="https://mearis.cms.gov/public/home">https://mearis.cms.gov/public/home</a>. As we have discussed in prior rulemaking, 
we may not be able to fully consider all of the requests that we 
receive for the upcoming fiscal year. We have found that, with the 
implementation of ICD 10, some types of requested changes to the MS-DRG 
classifications require more extensive research to identify and analyze 
all of the data that are relevant to evaluating the potential change.

[[Page 36550]]

Beginning with the MS-DRG classification change requests that are 
submitted for FY 2027 consideration, we plan to inform requestors via 
MEARIS<SUP>TM</SUP> if the MS-DRG classification change request is not 
able to be considered with the upcoming fiscal year rulemaking cycle. 
As in prior years, requests that may require more extensive analysis 
may include those involving multiple MS-DRGs, overlapping logic across 
multiple Major Diagnostic Categories (MDCs), special logic such as 
diagnosis codes combined with procedure codes, and/or complex logic 
including code clusters or multiple logic lists. Beginning with FY 2027 
rulemaking, we will no longer summarize in the proposed and final rules 
those requests that are not able to be considered for the upcoming FY.
    As noted previously, interested parties had to submit MS-DRG 
classification change requests for FY 2026 by October 20, 2024. As we 
have discussed in prior rulemaking and as previously noted, we may not 
be able to fully consider all of the requests that we receive for the 
upcoming fiscal year. In the proposed rule, we noted those topics for 
which further research and analysis are required, and which we will 
continue to consider in connection with future rulemaking as summarized 
in the discussion that follows. We further noted that we also received 
recommendations and feedback that did not involve requests to create, 
modify, or delete MS-DRGs, change code designations, or to review the 
CC Exclusions List or the surgical hierarchy, which therefore were not 
summarized or addressed in the discussion of the MS-DRG classification 
change requests received for FY 2026.
    As discussed in the proposed rule, we received requests to modify 
the GROUPER logic in several MS-DRGs under MDC 08 (Diseases and 
Disorders of the Musculoskeletal System and Connective Tissue) and a 
request to modify the GROUPER logic for MS-DRG 794 (Neonate with Other 
Significant Problems) under MDC 15 (Newborns and Other Neonates with 
Conditions Originating in Perinatal Period). Specifically, we received 
requests to do the following:
    <bullet> Modify the GROUPER logic of new MS-DRG 426 (Multiple Level 
Combined Anterior and Posterior Spinal Fusion Except Cervical with MCC 
or Custom-Made Anatomically Designed Interbody Fusion Device), new MS-
DRG 427 (Multiple Level Combined Anterior and Posterior Spinal Fusion 
Except Cervical with CC), and new MS-DRG 428 (Multiple Level Combined 
Anterior and Posterior Spinal Fusion Except Cervical without CC/MCC); 
new MS-DRG 447 (Multiple Level Spinal Fusion Except Cervical with MCC 
or Custom-Made Anatomically Designed Interbody Fusion Device) and new 
MS-DRG 448 (Multiple Level Spinal Fusion Except Cervical without MCC); 
and MS-DRGs 456, 457, and 458 (Spinal Fusion Except Cervical with 
Spinal Curvature, Malignancy, Infection or Extensive Fusions with MCC, 
with CC, and without CC/MCC, respectively) by reassigning cases with an 
ICD-10-PCS code that describes fusion of a sacroiliac joint using an 
internal fixation device with tulip connector or insertion of an 
internal fixation device with tulip connector into a pelvic bone with 
another spinal fusion procedure code that currently map to the lower 
severity level MS-DRG to the highest severity level (with MCC) MS-DRG.
    <bullet> Modify the GROUPER logic of MS-DRGs 463, 464, and 465 
(Wound Debridement and Skin Graft Except Hand for Musculoskeletal and 
Connective Tissue Disorders with MCC, with CC, and without CC/MCC, 
respectively); MS-DRGs 466, 467, and 468 (Revision of Hip or Knee 
Replacement with MCC, with CC, and without CC/MCC, respectively); and 
MS-DRGs 492, 493, and 494 (Lower Extremity and Humerus Procedures 
Except Hip, Foot and Femur with MCC, with CC, and without CC/MCC, 
respectively) by reassigning cases with ICD-10-PCS code XW0V0P7 
(Introduction of antibiotic-eluting bone void filler into bones, open 
approach, new technology group 7) that currently map to the lower 
severity level MS-DRG to the highest severity level (with MCC) MS-DRG.
    <bullet> Modify the GROUPER logic of MS-DRG 794. The requestor 
recommended that ICD-10-CM diagnosis codes P09.6 (Abnormal findings on 
neonatal screening for neonatal hearing loss), Z13.0 (Encounter for 
screening for diseases of the blood and blood-forming organs and 
certain disorders involving the immune mechanism), Z82.5 (Family 
history of asthma and other chronic lower respiratory diseases) and 
Z82.79 (Family history of other congenital malformations, deformations 
and chromosomal abnormalities), be added to the MS-DRG 795 (Normal 
Newborn) ``only secondary diagnosis'' list so that they would result in 
assignment to MS-DRG 795 when coded with a principal diagnosis code 
from ICD-10-CM category Z38 (Liveborn infants according to place of 
birth and type of delivery) instead of MS-DRG 794.
    In the proposed rule, we stated that we appreciated the submissions 
and related analyses provided by the requestors for our consideration 
as we review MS-DRG classification change requests for FY 2026; 
however, we also noted the complexity of the GROUPER logic for these 
MS-DRGs in connection with these requests requires more extensive 
analyses to identify and evaluate all the data relevant to assessing 
these potential modifications. Specifically, we noted that MS-DRGs 426, 
427, 428, 447, and 448 recently became effective October 1, 2024 (FY 
2025) and as discussed in the FY 2025 IPPS/LTCH PPS proposed rule (89 
FR 35982 through 35983) and final rule (89 FR 69049 through 69053) in 
consideration of any future modifications to the current structure of 
the logic for case assignment to MS-DRGs 456, 457, and 458 we noted 
that additional analysis would be needed because the logic is also 
defined by diagnosis code logic as well as extensive fusions. We also 
noted that, as discussed further in section II.C.5.c. of the preamble 
of the FY 2026 IPPS/LTCH PPS proposed rule, we identified additional 
inconsistencies related to the diagnosis code logic for MS-DRGs 456, 
457, and 458 for which we proposed modifications. In addition, we 
stated that analyzing the impact of restructuring the logic in these 
MS-DRGs with respect to procedure codes describing fusion of a 
sacroiliac joint using an internal fixation device with tulip connector 
necessitates evaluating the impact across numerous other MS-DRGs in MDC 
08, as well as MS-DRG 028 (Spinal Procedures with MCC), MS-DRG 029 
(Spinal Procedures with CC or Spinal Neurostimulators), and MS-DRG 030 
(Spinal Procedures without CC/MCC) under MDC 01 (Diseases and Disorders 
of the Nervous System) since the procedure codes describing fusion of a 
sacroiliac joint using an internal fixation device with tulip connector 
also map to these MS-DRGs.
    With respect to the request to reassign cases reporting procedure 
code XW0V0P7 from the lower severity level to the highest (with MCC) 
severity level in the previously listed MS-DRGs, we noted in the 
proposed rule that the procedure to insert a bone void filler is 
designated as a non-operating room (Non-O.R.) procedure and believe 
that the key factor that would contribute to resource utilization in 
these cases is the fact that the patients have an infection(s) which 
require additional resources. As discussed in section II.C.5.a. of the 
preamble of the FY 2026 IPPS/LTCH PPS proposed rule, we also noted that 
we received an MS-DRG request related to cases reporting a hip or knee 
procedure with a diagnosis of

[[Page 36551]]

periprosthetic joint infection (PJI) in MS-DRGs 463, 464, and 465. We 
stated that in our review of the claims data to address that request we 
noted that a subset of the cases also reported procedure code XW0V0P7. 
As discussed in the proposed rule, consistent with our established 
process, we must also consider if there are additional factors, such as 
the severity of illness with other secondary CC/MCC conditions reported 
and any other O.R. procedures or services provided, such as mechanical 
ventilation, that may be contributing to the consumption of resources 
for these cases. We stated that, for these reasons and those previously 
described, we believed additional time was needed to review and 
evaluate potential extensive modifications to the structure of these 
MS-DRGs.
    In the proposed rule, we noted that with respect to the request to 
modify the GROUPER logic of MS-DRG 794, as discussed in the FY 2025 
IPPS/LTCH PPS final rule (89 FR 69061 through 69065), we acknowledged 
that MS-DRG 794 utilizes ``fall-through'' logic, meaning if a diagnosis 
code is not assigned to any of the other MS-DRGs, then assignment 
``falls-through'' to MS-DRG 794. As discussed in the FY 2025 IPPS/LTCH 
PPS rule, we stated we have started to examine the GROUPER logic that 
would determine the assignment of cases to the MS-DRGs in MDC 15, 
including MS-DRGs 794 and 795, to determine where further refinements 
could potentially be made to better account for differences in clinical 
complexity and resource utilization. However, as we have noted in prior 
rulemaking (72 FR 47152), we stated we cannot adopt the same approach 
to refine the newborn MS-DRGs because of the extremely low volume of 
Medicare patients there are in these MS-DRGs. We stated we believe it 
is appropriate to consider the request to add ICD-10-CM diagnosis codes 
P09.6 (Abnormal findings on neonatal screening for neonatal hearing 
loss), Z13.0 (Encounter for screening for diseases of the blood and 
blood-forming organs and certain disorders involving the immune 
mechanism), Z82.5 (Family history of asthma and other chronic lower 
respiratory diseases) and Z82.79 (Family history of other congenital 
malformations, deformations and chromosomal abnormalities) to the MS-
DRG 795 (Normal Newborn) ``only secondary diagnosis'' list in 
connection with our continued examination of the GROUPER logic that 
would determine the assignment of cases to the MS-DRGs in MDC 15 in 
future rulemaking, rather than proposing to change the MS-DRG 
assignment of individual ICD-10-CM diagnosis codes at this time. We 
stated that additional time is needed to fully and accurately evaluate 
cases currently grouping to the MS-DRGs in MDC 15 to consider if 
restructuring the current MS-DRGs would better recognize the clinical 
distinctions of these patient populations.
    Comment: A commenter (the manufacturer) thanked CMS for 
consideration of its request to reassign cases with an ICD-10-PCS code 
that describes fusion of a sacroiliac joint using an internal fixation 
device with tulip connector or insertion of an internal fixation device 
with tulip connector into a pelvic bone with another spinal fusion 
procedure code that currently map to the lower severity level MS-DRG to 
the highest severity level (with MCC) MS-DRG and expressed their 
understanding that resources are limited such that not every request 
may be considered each cycle. However, the commenter stated they were 
hopeful that CMS would move forward with their recommendations, so that 
hospitals supporting these case types in FY 2026 would be compensated 
appropriately. The commenter provided additional information and 
analyses for CMS' consideration, including analyses with the proposed 
diagnosis code logic changes for MS-DRGs 456, 457, and 458, and stated 
its findings reinforce that the reassignment request for FY 2026 
involving MS-DRGs 426, 427, and 428; MS-DRGs 456, 457, and 458; and MS-
DRGs 447 and 448 to maintain payment accuracy and protect access to 
care for Medicare beneficiaries requiring advanced sacropelvic fixation 
is warranted, given the significant cost differences reported for these 
cases compared to all other cases in related MS-DRGs.
    Several commenters (members of an international society for spine 
surgery) suggested that CMS finalize the requested reassignment of 
cases reporting a sacroiliac joint fusion or pelvic fixation procedure 
with another spinal fusion procedure code from the lower severity level 
to the higher severity level spinal fusion MS-DRG in FY 2026 IPPS 
rulemaking. The commenters stated that in comparison to standard spinal 
fusion cases, procedures that include sacroiliac joint fusion and 
pelvic fixation represent a substantial increase in surgical 
complexity, operative time, and instrumentation cost. According to the 
commenters, the addition of both sacroiliac joint fusion and pelvic 
fixation adjunctive to spinal fusion introduces a level of surgical 
intensity that is not currently accounted for in the existing MS-DRG 
assignments. The commenters encouraged CMS to recognize the added 
clinical burden and cost associated with these cases and assign them to 
MS-DRGs that appropriately reflect their complexity.
    A commenter stated that CMS should reconsider its rejection of the 
request to reassign cases reporting procedures describing sacroiliac 
joint and pelvic internal fixation devices using a tulip connector. 
Another commenter stated that while there is an increased cost in 
performing pelvic fixation, its use dramatically lowers the risk of 
failure and reoperation, both of which lead to extraordinary cost 
escalation for care of these patients. The commenter also stated that 
long-term sustainability of the health care landscape depends on CMS 
incentivizing and supporting better care for these spinal patients 
through reassigning these higher cost cases to the higher paying MCC 
MS-DRG in the relevant MS-DRG grouping.
    In response to the discussion regarding the request to reassign 
cases reporting procedure code XW0V0P7 (Introduction of antibiotic-
eluting bone void filler into bones, open approach, new technology 
group 7) from the lower severity level to the highest (with MCC) 
severity level MS-DRG among MS-DRGs 463, 464, and 465; MS-DRGs 466, 
467, and 468; and MS-DRGs 492, 493, and 494, a commenter (the 
manufacturer) expressed concern that CMS did not act on its request and 
deferred the requested changes. The commenter stated its belief that 
without action on its request, the payment outlook for cases reporting 
procedure code XW0V0P7 for bone infection will result in underpayment 
and suppress hospital adoption and patient access to improved clinical 
outcomes. Additionally, the commenter stated that CMS' reasoning to 
defer decision making on claims reporting procedure code XW0V0P7 was 
based on the procedures non-O.R. designation and it was confusing to 
them as most treatments of bone infection with the antibiotic-eluting 
bone void filler (code XW0V0P7) are performed in the O.R. The commenter 
further stated that CMS should reconsider its FY 2026 decision to 
postpone action on the MS-DRG modification request to reassign cases 
reporting procedure code XW0V0P7 and clarify the criteria for how 
procedures are assigned O.R. versus non-O.R. status, as well as whether 
having O.R. status for a procedure code is essential for the code to 
potentially influence the MS-DRG assignment in the GROUPER. The 
commenter provided additional information and analyses for CMS' 
consideration and stated that cases

[[Page 36552]]

reporting procedure code XW0V0P7 show a compelling discrepancy in 
resource use that should not be ignored.
    With respect to our discussion regarding the request to modify the 
GROUPER logic of MS-DRG 794, a commenter specifically stated they 
appreciate CMS' ongoing examination of the GROUPER logic for the MS-
DRGs in MDC 15 (Newborns and Other Neonates with Conditions Originating 
in Perinatal Period) to determine if restructuring the current MS-DRGs 
would better recognize the clinical distinctions of these patient 
populations.
    Response: We thank the commenters for sharing their feedback on 
these requests. As discussed in the proposed rule, we have found that 
with the implementation of ICD-10, some types of requested changes to 
the MS-DRG classifications require more extensive research to identify 
and analyze the relevant data for evaluating a potential change.
    With respect to the comments received in response to our proposed 
rule discussion of the request to modify the GROUPER logic of MS-DRGs 
426, 427, and 428, MS-DRGs 456, 457, and 458, and MS-DRGs 447 and 448, 
while many commenters stated their belief that a modification to the 
logic of these MS-DRGs is warranted for FY 2026, we note that we did 
not propose a change to the logic for FY 2026, nor did we state the 
request was specifically rejected. Rather, we noted in the proposed 
rule that we will continue to consider this request in connection with 
future rulemaking. We appreciate the analysis that the commenter (the 
manufacturer) performed and the findings it shared, including with the 
proposed changes to the diagnosis code logic for MS-DRGs 456, 457, and 
458; however, as discussed in the proposed rule, the proposed changes 
for MS-DRGs 456, 457, and 458 involving diagnosis code logic were only 
one of several considerations as to why additional time is needed to 
evaluate the reassignment request (90 FR 18012). We note that the logic 
for case assignment to MS-DRGs 456, 457, and 458 is also defined by 
extensive fusions. In addition, MS-DRGs 426, 427, 428, 447, and 448 
(that is, multiple level spinal fusions) recently became effective 
October 1, 2024 which we are continuing to monitor. The data analysis 
necessary to examine the intricate logic within the spinal fusion MS-
DRGs outlined in the request is complex and requires additional time 
for careful consideration of case redistribution and potential relative 
weight impacts, in connection with other related spinal fusion 
procedure requests that may be discussed in future rulemaking.
    With respect to the comment we received in response to our proposed 
rule discussion of the request to reassign cases with ICD-10-PCS code 
XW0V0P7 (Introduction of antibiotic-eluting bone void filler into 
bones, open approach, new technology group 7) among MS-DRGs 463, 464, 
and 465; MS-DRGs 466, 467, and 468; and MS-DRGs 492, 493, and 494, 
while the commenter stated that CMS should reconsider the decision to 
postpone action on the request to modify the MS-DRG logic for the 
aforementioned MS-DRGs for FY 2026, we note that we did not propose a 
change to the logic for FY 2026. Rather, we noted in the proposed rule 
that we will continue to consider this request in connection with 
future rulemaking. We appreciate the analysis that the commenter (the 
manufacturer) performed and the findings it shared; however, we note 
that in addition to assessing impacts in association with other MS-DRG 
requests being considered, there are various types of bone void fillers 
and additional data analysis would also need to be performed to assess 
cases reporting the procedure codes describing those alternative 
products for comparison. While we did not propose a change to the 
assignment of these cases for FY 2026, we noted in our proposed rule 
discussion that we will continue to consider this request in connection 
with future rulemaking.
    As previously discussed, we will continue to consider these issues 
in connection with future rulemaking. As we develop and refine our 
analysis of the claims data with respect to MS-DRGs in MDC 01, MDC 08, 
and MDC 15, we welcome feedback on other factors that should be 
considered in the potential restructuring of these MS-DRGs. Feedback 
and other suggestions may be directed to MEARIS<SUP>TM</SUP> at: 
<a href="https://mearis.cms.gov/public/home">https://mearis.cms.gov/public/home</a>. As noted, interested parties should 
submit any MS-DRG classification change requests, including any 
comments and suggestions for FY 2027 consideration by October 20, 2025 
via MEARIS<SUP>TM</SUP> at: <a href="https://mearis.cms.gov/public/home">https://mearis.cms.gov/public/home</a>.
    As we did for the FY 2025 IPPS/LTCH PPS proposed rule, for the FY 
2026 IPPS/LTCH PPS proposed rule we provided a test version of the ICD-
10 MS-DRG GROUPER Software, Version 43, so that the public can better 
analyze and understand the impact of the proposals included in the 
proposed rule. We noted that this test software reflected the proposed 
GROUPER logic for FY 2026. Therefore, it included the new diagnosis and 
procedure codes that are effective for FY 2026 as reflected in Table 
6A.--New Diagnosis Codes--FY 2026 and Table 6B.--New Procedure Codes--
FY 2026 associated with the proposed rule and does not include the 
diagnosis codes that are invalid beginning in FY 2026 as reflected in 
Table 6C.--Invalid Diagnosis Codes--FY 2026 and Table 6D.--Invalid 
Procedure Codes--FY 2026 associated with the proposed rule. Those 
tables were not published in the Addendum to the FY 2026 IPPS/LTCH PPS 
proposed rule, but are available on the CMS website at: <a href="https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/index">https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/index</a>.html as described in section VI. of the 
Addendum to the FY 2026 IPPS/LTCH PPS proposed rule. Because the 
diagnosis and procedure codes no longer valid for FY 2026 are not 
reflected in the test software, we made available a supplemental file 
in Table 6P.1a that includes the mapped Version 43 FY 2026 ICD-10-CM 
codes and the deleted Version 42 FY 2025 ICD-10-CM codes and Table 
6P.1b that includes the mapped Version 43 FY 2026 ICD-10-PCS codes and 
the deleted Version 42.1 FY 2025 ICD-10-PCS codes that should be used 
for testing purposes with users' available claims data. Therefore, 
users had access to the test software allowing them to build case 
examples that reflect the proposals that were included in the proposed 
rule. In addition, users were able to view the draft version of the 
ICD-10 MS-DRG Definitions Manual, Version 43 that contains the 
documentation for proposed FY 2026 ICD-10 MS-DRG GROUPER Version 43 
logic changes and were also able to view a draft version of the 
Definitions of Medicare Code Edits (MCE) Manual to review any changes 
that will become effective October 1 for FY 2026. In the proposed rule 
we also noted that, as a result of new and modified code updates 
approved after the annual spring ICD-10 Coordination and Maintenance 
Committee meeting, any further changes to the MCE will be reflected in 
the finalized Definitions of Medicare Code Edits (MCE) Manual, made 
available in association with the annual IPPS/LTCH PPS final rule. As 
such, we made available the draft FY 2026 ICD-10 MCE Version 43 Manual 
file on the CMS website at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software</a>.
    We noted in the proposed rule that the MCE manual is comprised of 
two chapters: Chapter 1: Edit code lists provides a listing of each 
edit, an

[[Page 36553]]

explanation of each edit, and as applicable, the diagnosis and/or 
procedure codes for each edit, and Chapter 2: Code list changes 
summarizes the changes in the edit code lists (for example, additions 
and deletions) from the prior release of the MCE software. We also 
stated that the public may submit any questions, comments, concerns, or 
recommendations regarding the MCE to the CMS mailbox at 
<a href="/cdn-cgi/l/email-protection#115c42554356527d706262787778727065787e7f5279707f767451727c623f7979623f767e67"><span class="__cf_email__" data-cfemail="c5889681978286a9a4b6b6aca3aca6a4b1acaaab86ada4aba2a085a6a8b6ebadadb6eba2aab3">[email&#160;protected]</span></a> for our review and consideration.
    In association with the proposed rule, we made available the test 
version of the ICD-10 MS-DRG GROUPER Software, Version 43, the draft 
version of the ICD-10 MS-DRG Definitions Manual, Version 43, the draft 
version of the Definitions of Medicare Code Edits Manual, Version 43, 
and the supplemental mapping files in Tables 6P.1a and 6P.1b of the FY 
2025 and FY 2026 ICD-10-CM diagnosis codes and ICD-10-PCS procedure 
codes which are available at <a href="https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/MS-DRG-Classifications-and-Software">https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/MS-DRG-Classifications-and-Software</a>.
    Comment: Commenters expressed appreciation that we provided a test 
version of the ICD-10 MS-DRG GROUPER Software, Version 43, along with 
mapping files to assist with analysis, however, the commenters stated 
that this version essentially only allows for a case-by-case analysis 
and a minimal batch analysis. The commenters stated that it would be 
more beneficial to have a Batch z/OS version of the test GROUPER so 
that it could be better utilized for broader and more meaningful 
analysis purposes. The commenters requested that availability of a 
Batch z/OS version of the test GROUPER be made publicly available for 
all future rulemaking.
    Response: We appreciate the commenters' feedback and will take the 
suggestion into consideration.
    Following are the changes that we proposed to the MS-DRGs for FY 
2026. We invited public comments on each of the MS-DRG classification 
proposed changes, as well as our proposals to maintain certain existing 
MS-DRG classifications discussed in the FY 2026 IPPS/LTCH PPS proposed 
rule. In some cases, we proposed changes to the MS-DRG classifications 
based on our analysis of claims data and clinical appropriateness. In 
other cases, we proposed to maintain the existing MS-DRG 
classifications based on our analysis of claims data and clinical 
appropriateness. As discussed in the FY 2026 IPPS/LTCH PPS proposed 
rule, our MS-DRG analysis was based on ICD-10 claims data from the 
September 2024 update of the FY 2024 MedPAR file, which contains 
hospital bills received from October 1, 2023 through September 30, 
2024. In our discussion of the proposed MS-DRG reclassification 
changes, we referred to these claims data as the ``September 2024 
update of the FY 2024 MedPAR file.''
    As explained in previous rulemaking (76 FR 51487), in deciding 
whether to propose to make further modifications to the MS-DRGs for 
particular circumstances brought to our attention, we consider whether 
the resource consumption and clinical characteristics of the patients 
with a given set of conditions are significantly different than the 
remaining patients represented in the MS-DRG. We evaluate patient care 
costs using average costs and lengths of stay and rely on clinical 
factors to determine whether patients are clinically distinct or 
similar to other patients represented in the MS-DRG. In evaluating 
resource costs, we consider both the absolute and percentage 
differences in average costs between the cases we select for review and 
the remainder of cases in the MS-DRG. We also consider variation in 
costs within these groups; that is, whether observed average 
differences are consistent across patients or attributable to cases 
that are extreme in terms of costs or length of stay, or both. Further, 
we consider the number of patients who will have a given set of 
characteristics and generally prefer not to create a new MS-DRG unless 
it would include a substantial number of cases.
    In the FY 2021 IPPS/LTCH PPS final rule (85 FR 58448), we finalized 
our proposal to expand our existing criteria to create a new 
complication or comorbidity (CC) or major complication or comorbidity 
(MCC) subgroup within a base MS-DRG. Specifically, we finalized the 
expansion of the criteria to include the NonCC subgroup for a three-way 
severity level split. We stated we believed that applying these 
criteria to the NonCC subgroup would better reflect resource 
stratification as well as promote stability in the relative weights by 
avoiding low volume counts for the NonCC level MS-DRGs. We noted that 
in our analysis of MS-DRG classification requests for FY 2021 that were 
received by November 1, 2019, as well as any additional analyses that 
were conducted in connection with those requests, we applied these 
criteria to each of the MCC, CC, and NonCC subgroups.
    As discussed in the FY 2024 IPPS/LTCH PPS final rule (88 FR 58661), 
we continue to apply the criteria to create subgroups, including 
application of the NonCC subgroup criteria, in our annual analysis of 
MS-DRG classification requests, consistent with our approach since FY 
2021 when we finalized the expansion of the criteria to include the 
NonCC subgroup for a three-way severity level split. Accordingly, in 
our analysis of the MS-DRG classification requests for FY 2026 that we 
received by October 20, 2024, as well as any additional analyses that 
were conducted in connection with those requests, we applied these 
criteria to each of the MCC, CC, and NonCC subgroups, as described in 
the following table.

[[Page 36554]]

[GRAPHIC] [TIFF OMITTED] TR04AU25.039

    In general, once the decision has been made to propose to make 
further modifications to the MS-DRGs as described previously, such as 
creating a new base MS-DRG, or in our evaluation of a specific MS-DRG 
classification request to split (or subdivide) an existing base MS-DRG 
into severity levels, all five criteria must be met for the base MS-DRG 
to be split (or subdivided) by a CC subgroup. We note that in our 
analysis of requests to create a new MS-DRG, we typically evaluate the 
most recent year of MedPAR claims data available. For example, we 
stated earlier that for the FY 2026 IPPS/LTCH PPS proposed rule, our 
MS-DRG analysis was based on ICD-10 claims data from the September 2024 
update of the FY 2024 MedPAR file. However, in our evaluation of 
requests to split an existing base MS-DRG into severity levels, as 
noted in prior rulemaking (80 FR 49368), we typically analyze the most 
recent 2 years of data. This analysis includes 2 years of MedPAR claims 
data to compare the data results from one year to the next to avoid 
making determinations about whether additional severity levels are 
warranted based on an isolated year's data fluctuation and also, to 
validate that the established severity levels within a base MS-DRG are 
supported. The first step in our process of evaluating if the creation 
of a new CC subgroup within a base MS-DRG is warranted is to determine 
if all the criteria is satisfied for a three-way split. In applying the 
criteria for a three-way split, a base MS-DRG is initially subdivided 
into the three subgroups: MCC, CC, and NonCC. Each subgroup is then 
analyzed in relation to the other two subgroups using the volume 
(Criteria 1 and 2), average cost (Criteria 3 and 4), and reduction in 
variance (Criteria 5). If the criteria fail, the next step is to 
determine if the criteria are satisfied for a two-way split. In 
applying the criteria for a two-way split, a base MS-DRG is initially 
subdivided into two subgroups: ``with MCC'' and ``without MCC'' (1_23) 
or ``with CC/MCC'' and ``without CC/MCC'' (12_3). Each subgroup is then 
analyzed in relation to the other using the volume (Criteria 1 and 2), 
average cost (Criteria 3 and 4), and reduction in variance (Criteria 
5). If the criteria for both of the two-way splits fail, then a split 
(or CC subgroup) would generally not be warranted for that base MS-DRG. 
If the three-way split fails on any one of the five criteria and all 
five criteria for both two-way splits (1_23 and 12_3) are met, we would 
apply the two-way split with the highest R2 value. We note that if the 
request to split (or subdivide) an existing base MS-DRG into severity 
levels specifies the request is for either one of the two-way splits 
(1_23 or 12_3), in response to the specific request, we will evaluate 
the criteria for both of the two-way splits; however, we do not also 
evaluate the criteria for a three-way split.
    We are making the FY 2026 ICD-10 MS-DRG GROUPER and Medicare Code 
Editor (MCE) Software Version 43, the ICD-10 MS-DRG Definitions Manual 
files Version 43 and the Definitions of Medicare Code Edits Manual 
Version 43 available to the public on our CMS website at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software</a>.
2. Pre-MDC MS-DRG 018 Chimeric Antigen Receptor (CAR) T-Cell and Other 
Immunotherapies
    In the FY 2026 IPPS/LTCH PPS proposed rule (90 FR 18015 through 
18017), we discussed a request we received to review the recent MS-DRG 
assignments to Pre-MDC MS-DRG 018 (Chimeric Antigen Receptor (CAR) T-
cell and Other Immunotherapies) and to clarify how decisions for the 
assignment of cell and gene therapies will be made moving forward. 
According to the requestor, for FY 2025, CMS did not assign prademagene 
zamikeracel (PZ), an autologous genetically engineered cell-based gene 
therapy, to MS-DRGs that would create clinical homogeneity and 
therefore, the mapping of these cases to MS-DRG 018 instead implied 
that estimated post-approval product pricing takes precedent for cell 
and gene therapies over clinical homogeneity principles. The requestor 
acknowledged that CMS has previously clarified that therapies mapped to 
Pre-MDC MS-DRG 018 do not need to be CAR T-cell products or utilized in 
the treatment of cancer and stated it concurs with that approach. 
However, the requestor indicated that the mapping of PZ to Pre-MDC MS-
DRG 018 for FY 2025 also raised the following questions:
    <bullet> Why was PZ mapped to Pre-MDC MS-DRG 018 when a different 
product (eladocagene exuparvovec) that is also delivered via operating 
room administration methods was mapped to other non-pre-MDC MS-DRGs?
    <bullet> Why did CMS indicate that Lantidra, a recently approved 
cellular therapy, would map to the same MS-DRGs as existing insulin 
delivery therapies and technologies used to treat the subset of 
patients with hard-to-control Type 1 diabetes complicated by severe 
hypoglycemia who cannot receive a whole pancreas transplant instead of 
to Pre-MDC MS-DRG 018?
    <bullet> Does CMS intend a future split of Pre-MDC MS-DRG 018 
between medical and surgical cell and gene therapies to recognize the 
clinical resource

[[Page 36555]]

differential between the two modalities, even if the 500 case volume 
threshold is not reached?
    <bullet> Why was a product delivered via allogeneic stem cell 
transplant procedure (Orca-T) mapped to Pre-MDC MS-DRG 018 instead of 
Pre-MDC MS-DRG 014 (Allogeneic Bone Marrow Transplant)?
    <bullet> If products delivered via stem cell transplant should be 
mapped to Pre-MDC MS-DRG 018 based on resource use, per the Orca-T 
example, why are multiple gene therapy products delivered via stem cell 
transplant instead mapped to Pre-MDC MS-DRGs 016 and 017 (Autologous 
Bone Marrow Transplant with CC/MCC and without CC/MCC, respectively)?
    The requestor stated the previously listed questions illustrate 
examples of inconsistencies with the MS-DRG mappings of cell and gene 
therapy products in recent years. The requestor recommended that CMS 
review recent MS-DRG assignments for these products and consider 
refinements to the approach. The requestor also urged CMS to clarify 
how decisions for cell and gene therapies will be made in the future. 
The requestor stated that if the intent of CMS is for Pre-MDC MS-DRG 
018 to be a broad cell and gene therapy MS-DRG then a modification to 
the title of Pre-MDC MS-DRG 018 should be proposed and therapies 
currently assigned to other MS-DRGs should be re-mapped.
    The requestor also suggested that CMS clarify the process by which 
interested parties can submit comments on potential or proposed 
procedure code mappings to the MS-DRGs for code proposals discussed at 
the Spring ICD-10 Coordination and Maintenance (C&M) Committee meeting 
since, given the timing, proposed code assignments are not published in 
association with the annual IPPS/LTCH PPS proposed rule. Specifically, 
the requestor stated there is no opportunity for interested parties to 
provide feedback to CMS about the assignment of new codes to Pre-MDC 
MS-DRG 018. The requestor stated that because MS-DRG 018 is a Pre-MDC 
MS-DRG with a limited number of procedure codes mapping to it, it is 
important for interested parties to have the ability to preview 
potential assignments to this MS-DRG and provide feedback to CMS prior 
to any final mapping decisions being made. The requestor acknowledged 
that CMS previously responded to prior comments regarding the process 
of commenting on the assignment of newly created codes; however, the 
requestor suggested that CMS provide additional clarification. 
Specifically, the requestor stated that the primary comment period with 
respect to the Spring procedure code requests is the timeframe 
following the ICD-10 C&M Committee meeting and that the materials 
provided in association with the meeting do not contain mapping 
requests submitted by the code requestor. The requestor indicated that 
if it is to assume any new procedure code request could potentially be 
mapped to Pre-MDC MS-DRG 018 and submits comments accordingly, that 
would create an undue burden. The requestor submitted the following 
questions regarding the process by which interested parties may submit 
comments on potential procedure code mappings to MS-DRGs:
    <bullet> Can mapping requests be submitted as part of the request 
for a new ICD-10-PCS procedure code or do mapping requests need to go 
through the MS-DRG modification process with an annual October 
deadline?
    <bullet> Can CMS provide information on mapping requests as part of 
the ICD-10 C&M Committee meeting materials?
    <bullet> Will comments submitted to the ICD-10 C&M Committee about 
potential mappings be shared with the CMS teams associated with MS-DRG 
mapping decisions?
    <bullet> Should interested parties include the same comments that 
are submitted to the ICD-10 C&M Committee in their proposed rule 
comments?
    <bullet> Will comments submitted as part of the proposed rule be 
considered within scope for proposed codes presented during the spring 
meeting that are subsequently finalized but not listed in Table 6A.--
New Diagnosis codes and Table 6B.--New Procedure Codes with proposed 
mappings?
    <bullet> Do CMS' prior responses indicate that interested parties 
who submit comments on procedure code mappings should request code 
proposals presented at the spring meeting be delayed until the fall 
meeting?
    The requestor recommended that CMS address the previously listed 
questions and seek input on the process by which interested parties may 
submit comments on potential procedure code mappings.
    We stated in the proposed rule that we appreciated the requestor's 
feedback and suggestions regarding the classification of therapies to 
Pre-MDC MS-DRG 018 and the broader topic of MS-DRG mappings of cell and 
gene therapy products for the future. As discussed in the FY 2025 IPPS/
LTCH PPS final rule (89 FR 69008 through 69010), we summarized and 
responded to comments regarding the mapping of procedure codes 
describing the application of PZ and other newly established procedure 
codes to Pre-MDC MS-DRG 018. We noted that we previously addressed 
similar comments in the FY 2023 IPPS/LTCH PPS final rule (87 FR 48806 
through 48807), and we also noted that we provided detailed summaries 
and responses to these same or similar comments in the FY 2022 IPPS/
LTCH PPS final rule (86 FR 44798 through 44806). We also referred the 
reader to the discussion in section II.D. of the FY 2026 IPPS/LTCH PPS 
proposed rule, regarding the proposed relative weight methodology for 
cases mapping to Pre-MDC MS-DRG 018 effective October 1, 2025, for FY 
2026.
    As discussed in the proposed rule, with respect to the requestor's 
suggestion that a modification to the title of Pre-MDC MS-DRG 018 be 
proposed, we noted that the requestor did not provide a specific 
recommendation for FY 2026 consideration; however, we acknowledged that 
there has been discussion related to requests to revise the title to 
Pre-MDC MS-DRG 018 in prior rulemaking, most recently in the FY 2025 
IPPS/LTCH PPS final rule (89 FR 69008 through 69010), and we stated 
that we continue to be interested in obtaining input from members of 
the public on options to consider, recognizing there are additional 
types of cell and gene therapies now mapping to Pre-MDC MS-DRG 018. We 
stated we will continue to review additional feedback and suggestions 
in connection with future rulemaking.
    In response to the requestor's assertion that there is no 
opportunity for interested parties to submit feedback about MS-DRG 
assignments, as we have discussed in prior rulemaking (87 FR 48807 
through 48808) and as noted in the proposed rule discussion, interested 
parties may use current coding information as shown in the ICD-10 C&M 
Committee meeting materials to consider the potential MS-DRG 
assignments for any procedure codes that may be finalized after the 
Spring meeting and submit public comments for consideration. As we have 
noted in prior rulemaking, because the diagnosis and procedure code 
proposals that are presented at the Spring ICD-10-CM C&M Committee 
meeting for an October 1 implementation (upcoming FY) are not finalized 
in time to include in Table 6A.--New Diagnosis Codes and Table 6B.--New 
Procedure Codes in association with the proposed rule, we use our 
established process to examine the MS-DRG assignment for the 
predecessor codes to determine the most appropriate MS-DRG assignment. 
Specifically, we review the predecessor code and MS-DRG assignment most

[[Page 36556]]

closely associated with the new procedure code, and in the absence of 
claims data, we consider other factors that may be relevant to the MS-
DRG assignment, including the severity of illness, treatment 
difficulty, complexity of service and the resources utilized in the 
diagnosis and/or treatment of the condition. We have noted in prior 
rulemaking that this process does not automatically result in the new 
procedure code being assigned to the same MS-DRG or to have the same 
designation (O.R. versus Non-O.R.) as the predecessor code. In response 
to the question regarding the inclusion of information on mapping 
requests as part of the ICD-10 C&M Committee meeting materials, we 
noted in the proposed rule that, as announced at each ICD-10 C&M 
Committee meeting, there is no discussion of MS-DRGs, payment, 
coverage, or billing at the ICD-10 C&M Committee meetings; therefore, 
we do not include such information in the meeting materials made 
publicly available in association with the meeting. Rather, we state 
that any issues related to MS-DRGs or payment are addressed through 
IPPS rulemaking. We noted that the purpose of the ICD-10 C&M Committee 
meeting is to present code proposals based on requests received 
regarding coding updates (that is, additions, deletions, or revisions). 
Therefore, while mapping requests may be included in the submission of 
an ICD-10-PCS procedure code request, that information is not included 
in the meeting materials, nor is there any discussion about any mapping 
request(s) during the meeting.
    In response to the requestor's question regarding whether comments 
submitted to the ICD-10 C&M Committee about potential mappings are 
shared with the CMS staff associated with MS-DRG mapping decisions, we 
noted in the proposed rule that the comments are shared. With respect 
to whether interested parties should include the same comments 
submitted to the ICD-10 C&M Committee in the comments submitted in 
response to the proposed rule, we noted in the proposed rule that what 
comments to include and submit for each process is up to the commenter. 
In response to the question of whether comments submitted in response 
to the proposed rule would be considered within scope for proposed 
codes presented during the Spring meeting that are subsequently 
finalized but not listed in Table 6A.--New Diagnosis codes and Table 
6B.--New Procedure Codes with proposed mappings, we noted in the 
proposed rule that the procedure code update files reflecting the newly 
finalized codes are made publicly available following the receipt and 
review of public comments received by the established deadline for the 
Spring coding topics, and that interested parties may choose to submit 
public comments on MS-DRG assignment for the agency's consideration. 
Lastly, in response to the question of whether interested parties 
considering submitting comments on procedure code mappings should 
request code proposals associated with the Spring meeting be delayed 
until the Fall meeting, we similarly noted in the proposed rule that 
the decision on what comments a commenter decides to include and submit 
in response to a code proposal is up to the commenter. We referred the 
reader to section II.C.11. of the preamble of the FY 2026 IPPS/LTCH PPS 
proposed rule for additional information regarding the ICD-10 C&M 
Committee meeting process.
    As discussed in the proposed rule, in connection with the comments 
and questions about how products are grouped under the IPPS MS-DRGs, 
specifically with respect to cell and gene therapies under Pre-MDC MS-
DRG 018, for FY 2026, we also received a request to create a new 
neurosurgical gene therapy MS-DRG to more accurately reflect the 
clinical characteristics and resource intensity required for the 
administration of neurosurgical gene therapies, including eladocagene 
exuparvovec, for patients diagnosed with Aromatic L-amino acid 
decarboxylase (AADC) deficiency. We referred the reader to the FY 2022 
IPPS/LTCH PPS final rule (86 FR 44895) and the FY 2023 IPPS/LTCH PPS 
final rule (87 FR 48853 through 48854) for discussion regarding 
eladocagene exuparvovec.
    We stated that the requestor (the manufacturer), expressed its 
appreciation for CMS' efforts to reassign cases reporting procedure 
code XW0Q316 (Introduction of eladocagene exuparvovec into cranial 
cavity and brain, percutaneous approach, new technology group 6) to a 
surgical MS-DRG as discussed in the FY 2022 IPPS/LTCH PPS final rule 
(86 FR 44895). According to the requestor, the decision appropriately 
reclassified cases involving eladocagene exuparvovec from a Non-O.R. 
procedure to an operating room (O.R.) procedure due to the requirement 
for intraputaminal administration via a burr hole in the skull. 
However, the requestor did not agree with the current assignment to MS-
DRGs 628, 629, and 630 (Other Endocrine, Nutritional and Metabolic O.R. 
Procedures with MCC, with CC, and without CC/MCC, respectively) in MDC 
10, or MS-DRGs 987, 988, and 989 (Non-Extensive O.R. Procedure 
Unrelated to Principal Diagnosis with MCC, with CC, and without MCC/CC, 
respectively). According to the requestor, the clinical characteristics 
and average costs of the cases currently assigned to MS-DRGs 628, 629, 
and 630 are significantly different from those associated with 
eladocagene exuparvovec neurosurgical gene therapy for rare disease.
    The requestor stated that CMS denied the request to create a new 
MS-DRG for FY 2023, stating that it would continue to explore 
appropriate mechanisms to address low volume MS-DRGs indicated for rare 
diseases; however, after receiving responses to the Request for 
Information (RFI), the requestor stated that there have not been any 
changes proposed to the IPPS. The requestor stated its belief that 
assigning cases for this gene therapy and the rare disease indicated to 
a new MS-DRG is both appropriate and warranted. According to the 
requestor, the current MS-DRGs that eladocagene exuparvovec cases group 
to do not adequately reflect the clinical characteristics or resource 
needs associated with treatment which may deter hospitals from 
providing this therapy.
    The requestor also stated there are approximately 68 gene therapy 
trials in the U.S. for central nervous system disorders for which over 
30 of the 68 trials involve the gene therapy being administered 
directly into the brain parenchyma. According to the requestor, gene 
therapies administered surgically, including with neurosurgery, are 
extremely complicated, resource-intensive procedures for hospitals to 
undertake. These procedures require highly specialized surgeons, 
surgical equipment, and staff. Patients undergoing these procedures may 
also require continuous monitoring and longer hospital stays. The 
requestor stated the more intensive needs of these patients are not 
adequately captured in existing MS-DRGs and the creation of a new MS-
DRG for neurosurgical gene therapy would help CMS proactively shape 
payment policy for this evolving class of therapies, thus allowing 
appropriate payment to support patient access to these treatments.
    We stated that our analysis of the September 2024 update of the FY 
2024 MedPAR file yielded zero cases reporting the administration of 
eladocagene exuparvovec; therefore, we believed it would be premature 
to consider the creation of a new neurosurgical gene therapy MS-DRG at 
this time. We also stated we appreciated

[[Page 36557]]

the detailed clinical information that the requestor provided and 
acknowledged that cases involving neurosurgery are technically complex 
and that patients undergoing these procedures tend to be critically 
ill, many with rare diseases.
    We noted that we did receive a new procedure code request to 
identify and describe the Smartflow[supreg] Neuro Cannula as the 
delivery mechanism to administer eladocagene exuparvovec that was 
included as a topic in the Spring 2025 ICD-10 Coordination and 
Maintenance Committee Update materials. We refer the reader to the CMS 
website at: <a href="https://www.cms.gov/Medicare/Coding/ICD10/C-and-M-Meeting-Materials">https://www.cms.gov/Medicare/Coding/ICD10/C-and-M-Meeting-Materials</a> for additional detailed information regarding the request, 
and the related materials. We note that procedure code 00H033J 
(Insertion of infusion device into brain, temporary, percutaneous 
approach) that describes the procedure that uses the Smartflow[supreg] 
Neuro Cannula was approved and finalized as reflected in the FY 2026 
ICD-10-PCS code update files that were made publicly available on the 
CMS website on June 6, 2025 at: <a href="https://www.cms.gov/medicare/coding-billing/icd-10-codes">https://www.cms.gov/medicare/coding-billing/icd-10-codes</a>.
    We also noted, as discussed in prior rulemaking, that this category 
of therapies continues to evolve, and we are in the process of 
carefully considering the feedback we have previously received about 
ways in which we can continue to appropriately reflect resource 
utilization while maintaining clinical coherence and stability in the 
relative weights under the IPPS MS-DRGs. We appreciate the 
recommendations and suggestions for consideration we have received and 
will continue to examine these complex issues in connection with future 
rulemaking. We acknowledge that there may be distinctions to account 
for as we continue to gain more experience in the use of these 
therapies and have additional claims data to analyze.
    Comment: A commenter (the requestor) expressed appreciation for the 
clarification CMS provided regarding the submission of comments related 
to coding requests presented during the Spring ICD-10 Coordination and 
Maintenance Committee Meeting and that comments submitted after the 
Spring meeting will be shared with the groups responsible for 
considering MS-DRG mappings. The commenter stated that while some 
stakeholders may have the resources and expertise to review meeting 
materials, infer potential requested mappings for all therapies 
requesting new codes and submit mapping comments accordingly, many 
stakeholders will not. The commenter stated that if an applicant is 
requesting an MS-DRG mapping as part of the ICD-10-PCS process, this 
should be made explicitly public in the meeting materials, even if it 
is not discussed in the meeting itself. The commenter also stated that 
CMS should not ask or expect all stakeholders to know enough about 
clinical care and CMS' mapping processes to be able to suggest an 
alternative mapping for a code, if required. The commenter reiterated 
its request for CMS to introduce a process by which stakeholders can 
review requested MS-DRG mappings as part of, or in parallel to, the 
ICD-10-PCS code request process. The commenter also requested that CMS 
utilize its established process to review and reconsider MS-DRG 
assignment when stakeholders raise concerns about CMS' assignment 
instead of expecting stakeholders to propose alternative mappings.
    Response: We thank the commenter for the feedback. In response to 
the commenter's assertion that not all stakeholders may have the 
resources and expertise to review meeting materials, infer potential 
requested mappings for all therapies requesting new codes and submit 
mapping comments accordingly, we note that we have made all of the 
information and materials necessary to conduct those actions publicly 
available via the CMS website. Specifically, the ICD-10 Coordination 
and Maintenance Committee Meeting materials are available at: <a href="https://www.cms.gov/medicare/coding-billing/icd-10-codes/icd-10-coordination-maintenance-committee-materials">https://www.cms.gov/medicare/coding-billing/icd-10-codes/icd-10-coordination-maintenance-committee-materials</a>, and the meeting process is summarized 
in the annual rulemakings available at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps</a>. In addition, 
the ICD-10 MS-DRG Definitions Manual is made publicly available via the 
CMS website at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software</a>.
    In response to the commenter's statement that if an applicant is 
requesting an MS-DRG mapping as part of the ICD-10-PCS process it 
should be made public in the meeting materials even if it is not 
discussed in the meeting itself, we note that, as discussed in the 
preamble of the proposed rule (90 FR 18016) and this final rule, the 
purpose of the ICD-10 Coordination and Maintenance Committee meeting is 
to present code proposals based on requests received regarding coding 
updates (that is, additions, deletions, or revisions). Therefore, while 
mapping requests may be included in the submission of an ICD-10-PCS 
procedure code request, we disagree that the information should be 
included in the meeting materials. We underscore that the focus of the 
ICD-10 Coordination and Maintenance Committee meetings is on updates 
and maintenance to the ICD-10 code sets and not about how a potential 
new code may be designated or assigned under the IPPS, which is 
addressed through rulemaking. These are two separate and distinct 
processes, each with their own objectives and timelines.
    In response to the commenter's statement that CMS should not ask or 
expect all stakeholders to know enough about clinical care and CMS' 
mapping processes to be able to suggest an alternative mapping for a 
code, if required, we note that under our established process, we 
consider requests for MS-DRG classification changes on an annual basis 
that are submitted via MEARIS<SUP>TM</SUP> at: <a href="https://mearis.cms.gov/public/home">https://mearis.cms.gov/public/home</a> by the designated October 20 deadline for the upcoming 
fiscal year. If a proposal is subsequently put forth in rulemaking and 
members of the public submit comments expressing disagreement with that 
proposal (for example, proposed new MS-DRG(s), proposed reassignment of 
diagnosis and/or procedure codes, or their designation), the public 
comments routinely provide the rationale behind the disagreement as 
well as alternative suggestions) for our consideration, which we may be 
able to further evaluate. With respect to the mapping process, as 
discussed in the preamble of the proposed rule (90 FR 18016) and this 
final rule, under our established process, when a new procedure code is 
finalized, we review the predecessor code and MS-DRG assignment most 
closely associated with the new procedure code, and in the absence of 
claims data, we consider other factors that may be relevant to the MS-
DRG assignment, including the severity of illness, treatment 
difficulty, complexity of service and the resources utilized in the 
diagnosis and/or treatment of the condition. We have noted in prior 
rulemaking that this process does not automatically result in the new 
procedure code being assigned to the same MS-DRG or to have the same 
designation (O.R. versus Non-O.R.) as the predecessor code.
    Comment: A commenter (the requestor) expressed appreciation that 
CMS shared the types of concerns and questions raised by stakeholders 
about the rationale for mapping new ICD-10-PCS codes for novel 
therapies into Pre-MDC MS-DRG 018; however, the commenter requested 
that CMS discuss

[[Page 36558]]

the rationale for mapping Orca-T allogeneic T-cell immunotherapy to 
Pre-MDC MS-DRG 018.
    Response: We thank the commenter for the feedback. The procedure 
code proposal for Orca-T allogeneic T-cell immunotherapy was discussed 
at the March 19-20, 2024 ICD-10 Coordination and Maintenance Committee 
meeting. We refer the reader to the meeting materials on the CMS 
website at: <a href="https://www.cms.gov/medicare/coding-billing/icd-10-codes/icd-10-coordination-maintenance-committee-materials">https://www.cms.gov/medicare/coding-billing/icd-10-codes/icd-10-coordination-maintenance-committee-materials</a> for additional 
information regarding the request. ICD-10-PCS codes XW033BA 
(Introduction of Orca-T allogeneic T-cell immunotherapy into peripheral 
vein, percutaneous approach, new technology group 10) and XW043BA 
(Introduction of Orca-T allogeneic T-cell immunotherapy into central 
vein, percutaneous approach, new technology group 10) became effective 
October 1, 2024, for FY 2025. Under our established process, we 
reviewed the predecessor code assignments. The predecessor codes for 
Orca-T allogeneic T-cell immunotherapy (hereafter referred to as Orca-
T) are procedure codes 3E033GC (Introduction of other therapeutic 
substance into peripheral vein, percutaneous approach) and 3E043GC 
(Introduction of other therapeutic substance into central vein, 
percutaneous approach) that are designated as non-O.R. and do not 
affect MS-DRG assignment. We then reviewed other factors associated 
with Orca-T. Notably, Orca-T is a precision-engineered allogeneic stem 
cell and T-cell immunotherapy biologic (that is, a combination therapy 
comprised of immune cells, including regulatory T-cells (Tregs) and 
conventional T-cells (Tcons), and stem cells) that is in clinical 
trials and regulated under FDA section 351 of the Public Health Service 
Act (PHSA) as a biologic.
    Allogeneic hematopoietic stem cell transplant (alloHSCT) can 
provide a curative therapy for many patients with advanced hematologic 
malignancies. Unfortunately, despite advancements in identifying 
matching donors and medical care, patients can experience a variety of 
post-transplant complications including Graft Versus Host Disease 
(GvHD), infection and organ failure. GvHD is a condition in which the 
donated cells attack the recipient's tissues which can lead to end 
organ damage.
    Orca-T is derived from an HLA matched donor and combines progenitor 
stem cells along with highly purified T-cells in the form of regulatory 
T-cells (Tregs, a specialized CD4+ T cell subset) and conventional T-
cells (Tcons). Because of its purified nature, the Tregs can 
proliferate and exist in a patient's tissues in a fashion not normally 
possible. While the stem cells serve to build a long term immune system 
in the recipient, the Tregs act to protect the patient's tissues and 
organs from GvHD and other toxicities. The Tcons component is designed 
to accelerate the reconstitution of a patient's immune system, 
mediating the graft-versus-leukemic effect, graft-versus-infection and 
the inflammatory responses, providing protection against infection.
    Establishment of a successful allograft requires an approach that 
balances an enhancement of the graft-vs-tumor and graft-vs-infection 
effects while avoiding or limiting GvHD. While some immunotherapeutic 
agents treat an active disease process, the specialized cells in Orca-T 
are intended to immunologically mitigate significant post allograft 
complications such as GvHD and infection.
    We note that both CAR T-cell therapy and Orca T-cell therapy are 
forms of immunotherapies that are indicated for patients diagnosed with 
acute lymphoblastic leukemia (ALL), among other types of cancer. One of 
the challenges experienced to date with the treatment of ALL is GvHD, 
which is what Orca-T is formulated to address. We also note that there 
are other procedure codes describing both allogeneic CAR T-cell and 
non-CAR T-cell immunotherapy currently assigned to MS-DRG 018. 
Therefore, we believe the assignment of Orca T-cell immunotherapy to 
Pre-MDC MS-DRG 018 is appropriate.
    Comment: A commenter stated that the procedure code describing 
valoctocogene roxaparvovec is listed in Table 6B in association with 
the proposed rule and a proposed mapping to Pre-MDC MS-DRG 018, but CMS 
did not discuss any rationale for this proposal in the rule text. The 
commenter stated that the title of Pre-MDC MS-DRG 018 is Chimeric 
Antigen Receptor (CAR) T-Cell and Other Immunotherapies, and 
valoctocogene roxaparvovec is an off-the-shelf in vivo gene therapy 
that is neither a CAR-T nor an immunotherapy. Additionally, according 
to the commenter, it does not require the same types of complex and 
specialized clinical resources to administer as the other therapies 
assigned to Pre-MDC MS-DRG 018. The commenter further stated that, as a 
result, and without any discussion or explanation from CMS about why 
its medical advisors have proposed this, they assume that this proposed 
assignment is simply based on the manufacturer's request to assign its 
product to Pre-MDC MS-DRG 018 as part of the ICD-10-PCS code request 
application. The commenter stated that CMS' acceptance of this 
requested mapping is concerning as it seems that resource homogeneity 
is the only factor being relied upon. The commenter stated its 
understanding is that CMS has always discussed the importance of 
balancing both clinical and resource homogeneity when considering MS-
DRG assignments for new therapies. The commenter provided an example 
stating that CMS assigned several hematopoietic stem cell gene 
therapies to autologous transplant MS-DRGs 016 and 017 (Autologous Bone 
Marrow Transplant with CC/MCC and without CC/MCC, respectively) based 
on the clinical similarity of the services being provided to the 
patient, rather than basing assignment on price point. According to the 
commenter, if the latter had been deemed more critical at the time of 
those assignments, then CMS would have assigned the therapies to Pre-
MDC MS-DRG 018 as well. The commenter also stated that CMS did not 
propose to map eladocagene exuparvovec to MS-DRG 018 after denying its 
request for a new MS-DRG (as discussed later in this section), though 
eladocagene exuparvovec has a similar price point. The commenter stated 
it cannot determine any consistent logic guiding the variation in 
recent mapping proposals and decisions.
    The commenter requested that CMS not finalize the proposed mapping 
of valoctocogene roxaparvovec to Pre-MDC MS-DRG 018 due to differences 
in clinical complexity and resource use. The commenter stated that CMS 
should use its established mapping process and input from its clinical 
advisors to assign valoctocogene roxaparvovec to a more clinically 
appropriate MS-DRG.
    Response: In response to the commenter's request that CMS not 
finalize the proposed mapping of valoctocogene roxaparvovec to Pre-MDC 
MS-DRG 018 because it is neither a CAR-T nor an immunotherapy and does 
not require the same types of complex and specialized clinical 
resources to administer as the other therapies assigned to Pre-MDC MS-
DRG 018, we note that, as discussed in prior rulemaking, consideration 
is given to the similarities and differences in resource utilization 
among patients in each MS-DRG and we strive to ensure that resource 
utilization is relatively consistent across patients in each MS-DRG. 
However, some variation in resource intensity will remain among the 
patients in each MS-DRG because

[[Page 36559]]

the definition of the MS-DRG is not so specific that every patient is 
identical, rather the average pattern of resource intensity of a group 
of patients in an MS-DRG can be predicted. We note that historically, 
in the development of the DRGs, the initial step in the determination 
of the DRG had been the assignment of the appropriate MDC based on the 
principal diagnosis, however, beginning with the eighth version of the 
GROUPER (CMS 8.0), the initial step in DRG assignment was based on the 
procedure being performed, thus the creation of the Pre-MDC DRGs, where 
the patient is assigned to these DRGs independent of the MDC of the 
principal diagnosis. Therefore, the logic for case assignment to Pre-
MDC MS-DRG 018 does not preclude the assignment of other therapies 
indicated in the treatment of patients with different diagnoses. In our 
review of the MS-DRG assignment of valoctocogene roxaparvovec, we 
recognized that this technology is defined as a gene therapy. We also 
note that similar to the discussions in prior rulemaking with respect 
to the difficulty in predicting what the associated costs will be in 
the future for CAR T-cell and other immunotherapies that remain under 
development (87 FR 48806), it is also difficult to predict what the 
associated costs will be in the future for cell and gene therapies that 
remain under development or in clinical trials.
    In response to the commenter's assertion that CMS did not use its 
established mapping process and input from its clinical advisors to 
assign valoctocogene roxaparvovec to a more clinically appropriate MS-
DRG, as discussed in the preamble of the proposed rule (90 FR 18016) 
and this final rule, and as noted in prior rulemaking, we use our 
established process to examine the MS-DRG assignment for the 
predecessor codes to determine the most appropriate MS-DRG assignment. 
Specifically, we review the predecessor code and MS-DRG assignment most 
closely associated with the new procedure code, and in the absence of 
claims data, we consider other factors that may be relevant to the MS-
DRG assignment, including the severity of illness, treatment 
difficulty, complexity of service and the resources utilized in the 
diagnosis and/or treatment of the condition. As noted previously and in 
prior rulemaking, this process does not automatically result in the new 
procedure code being assigned to the same MS-DRG or to have the same 
designation (O.R. versus Non-O.R.). We note that the proposal to create 
new procedure codes that describe the administration of valoctocogene 
roxaparvovec was discussed at the September 10, 2024 ICD-10 
Coordination and Maintenance Committee meeting. The predecessor codes 
to describe the administration of valoctocogene roxaparvovec are ICD-
10-PCS codes 3E033GC (Introduction of other therapeutic substance into 
peripheral vein, percutaneous approach) and 3E043GC (Introduction of 
other therapeutic substance into central vein, percutaneous approach) 
which are designated as non-O.R. and do not impact MS-DRG assignment. 
We refer the reader to the CMS website at: <a href="https://www.cms.gov/Medicare/Coding/ICD10/C-and-M-Meeting-Materials">https://www.cms.gov/Medicare/Coding/ICD10/C-and-M-Meeting-Materials</a> for additional detailed 
information regarding the code request, including a recording of the 
discussion and the related meeting materials. We also note that the 
procedure codes to describe the administration of valoctocogene 
roxaparvovec were approved and finalized as reflected in Table 6B.--New 
Procedure Codes associated with the proposed rule and this final rule 
(and available via the CMS website at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps</a>) as well as 
reflected in the FY 2026 ICD-10-PCS code update files that were made 
publicly available on the CMS website on June 6, 2025 at: <a href="https://www.cms.gov/medicare/coding-billing/icd-10-codes">https://www.cms.gov/medicare/coding-billing/icd-10-codes</a>. As discussed in 
section II.C.11. of the preamble of the FY 2026 IPPS/LTCH PPS proposed 
rule and this final rule, the code titles are adopted as part of the 
ICD-10 Coordination and Maintenance Committee meeting process that have 
been finalized after the review of public comments. As also discussed 
in the preamble of the proposed rule (90 FR 18067) and this final rule, 
we proposed the MDC and MS-DRG assignments for the new diagnosis codes 
and procedure codes as set forth in Table 6A.--New Diagnosis Codes and 
Table 6B.--New Procedure Codes associated with the proposed rule. 
Therefore, the public has the opportunity to comment and provide 
feedback on the proposed assignments for CMS' consideration, which is 
subsequently included in the final rule with a summary of the comments 
and feedback and CMS' response, as is reflected in the discussion in 
this section of this final rule.
    In response to the commenter's statement that valoctocogene 
roxaparvovec does not require the same types of complex and specialized 
clinical resources to administer as other therapies assigned to Pre-MDC 
MS-DRG 018, we note that valoctocogene roxaparvovec is indicated in the 
treatment of Hemophilia A, an X-linked genetic disorder that results in 
a dysfunction in the gene encoding for Factor VIII which is essential 
for proper coagulation. Patients may have varying degrees of functional 
activity of Factor VIII with severe activity (< 1IU per deciliter) 
resulting in spontaneous hemorrhage. This can result in life 
threatening hemorrhages into the brain or lead to debilitating 
hemorrhages in the soft tissues or joints leading to chronic pain or 
arthropathy. While prophylactic regimens may improve outcomes, they do 
not address the underlying dysfunctional gene encoding for Factor VIII. 
Valoctocogene roxaparvovec is a one-time therapy that uses an adeno-
associated virus (AAV5) to deliver a functional copy of the F8 gene 
which is responsible for the production of Factor VIII.
    Valoctocogene roxaparvovec is similar to other gene based therapies 
currently assigned to Pre-MDC MS-DRG 18 such as prademagene zamikeracel 
(Zevaskyn<SUP>TM</SUP>) and CAR T-cell therapy in that these treatments 
involve introduction of genetic material into a patient's cells to 
treat a disease process. CAR T-cell therapy uses a patient's 
genetically modified T-cells to treat cancer while prademagene 
zamikeracel and valoctocogene roxaparvovec introduce functional 
deoxyribonucleic acid (DNA) copies into a patient's skin and liver, 
respectively, to correct an inherited genetic dysfunction. While they 
are similar in character to the hematopoietic stem cell gene therapies 
assigned to autologous transplant MS-DRGs 016 and 017 (Autologous Bone 
Marrow Transplant with CC/MCC and without CC/MCC, respectively), 
resource utilization differs. Prademagene zamikeracel and valoctocogene 
roxaparvovec involve introduction of genetic material into mature cells 
while hematopoietic gene therapy involves introduction of genetic 
material into stem cells which require a level of resource utilization 
more akin to other therapies in MS-DRGs 016 and 017.
    In response to the commenter's assumption that the manufacturer 
requested assignment to Pre-MDC MS-DRG 018 in association with its 
procedure code request, we note that it did not. We also take this 
opportunity to emphasize that, as has been discussed in prior 
rulemaking with respect to gene therapies, this category of therapies 
continues to evolve, and we are in the process of carefully considering 
the feedback we have previously received about ways in which we can 
continue

[[Page 36560]]

to appropriately reflect resource utilization while maintaining 
clinical coherence and stability in the relative weights under the IPPS 
MS-DRGs. We also note that valoctogene roxaparvovec is primarily 
administered in the outpatient setting (for example, hemophilia 
treatment centers). However, in rare instances when the therapy is 
administered in the inpatient setting or the patient must be 
transferred to the inpatient setting, providers are equipped with a 
specific procedure code to report its use in connection with a 
predictable payment mechanism under the IPPS.
    Comment: A commenter stated they support appropriate and ongoing 
refinement of the MS-DRG system and greater clarity with respect to how 
CMS renders decisions regarding ICD-10-PCS codes mapped to Pre-MDC MS-
DRG 018. Another commenter recommended that CMS dedicate space in each 
IPPS proposed rule to identify relevant ICD-10-PCS codes that might be 
assigned to Pre-MS-DRG 018, along with preliminary rationales for these 
potential assignments.
    Response: We appreciate the commenters' feedback. We note that 
while the establishment of Pre-MDC MS-DRG 018 has presented unique 
operational considerations under the IPPS, there are also over 700 
other MS-DRGs that warrant continued review for ongoing refinements. In 
response to how CMS renders decisions regarding the mapping of 
procedure codes to a Pre-MDC MS-DRG, as discussed in the preamble of 
the proposed rule (90 FR 18068) and in this final rule, we review the 
predecessor code and MS-DRG assignment most closely associated with the 
new diagnosis or procedure code, and in the absence of claims data, we 
consider other factors that may be relevant to the MS-DRG assignment, 
including the severity of illness, treatment difficulty, complexity of 
service and the resources utilized in the diagnosis or treatment of the 
condition. As previously noted, this process does not automatically 
result in the new diagnosis or procedure code being proposed for 
assignment to the same MS-DRG or to have the same designation as the 
predecessor code.
    Comment: A commenter stated it is unclear why discussion of the 
request to create a new MS-DRG to describe neurosurgical gene therapies 
was included under the Pre-MDC MS-DRG 018 section of the proposed rule 
instead of under MDC 10 (Endocrine, Nutritional and Metabolic Diseases 
and Disorders) where prior discussions of eladocagene exuparvovec have 
been included. The commenter indicated that if CMS placed this 
discussion in the Pre-MDC MS-DRG 018 section in an effort to seek 
comments about whether Pre-MDC MS-DRG 018 should be broadened to 
include eladocagene exuparvovec and other gene therapies that it be 
made explicit what information the agency is seeking from stakeholders 
in advance of the FY 2027 IPPS/LTCH PPS rulemaking cycle. The commenter 
also stated that if CMS intends for Pre-MDC MS-DRG 018 to be the 
primary Pre-MDC MS-DRG for all cell and gene therapies until further 
modifications can be made, the agency should propose to rename the MS-
DRG and be consistent with mapping practices and rationale. The 
commenter further remarked that CMS' proposed rule analysis stated no 
cases reporting eladocagene exuparvovec were found, however, according 
to the commenter, because the product was not approved until November 
2024, cases would not be expected to appear in the data.
    Response: As stated in the preamble of the proposed rule (90 FR 
18016), in connection with the comments and questions about how 
products are grouped under the IPPS MS-DRGs, specifically with respect 
to cell and gene therapies under Pre-MDC MS-DRG 018, for FY 2026, we 
also received a request to create a new neurosurgical gene therapy MS-
DRG, which we believe was appropriately placed and discussed in that 
section of the preamble of the proposed rule. As also explicitly stated 
in the preamble of the proposed rule (90 FR 18017), we continue to 
welcome additional feedback and comments on other options to consider 
on how to appropriately address low volume, high-cost treatments for 
rare diseases, therefore, we believe that our intentions were clearly 
stated. In response to the commenter's suggestion that a proposal to 
revise the title for Pre-MDC MS-DRG 018 should be put forth if CMS aims 
to temporarily designate Pre-MDC MS-DRG 018 as the primary Pre-MDC MS-
DRG for all cell and gene therapies, we note that, as also stated in 
the preamble of the proposed rule, (90 FR 18016), there has been 
discussion related to requests to revise the title to Pre-MDC MS-DRG 
018 in prior rulemaking, most recently in the FY 2025 IPPS/LTCH PPS 
final rule (89 FR 69008 through 69010), and we continue to be 
interested in obtaining input from members of the public on options to 
consider, recognizing there are additional types of cell and gene 
therapies now mapping to Pre-MDC MS-DRG 018. We stated we will continue 
to review additional feedback and suggestions in connection with future 
rulemaking. In response to the commenter's remarks that CMS' proposed 
rule analysis stated no cases were found to report the administration 
of eladocagene exuparvovec and because the product was not approved 
until November 2024, cases would not be expected to appear in the data, 
we note that procedure code XW0Q316 (Introduction of eladocagene 
exuparvovec into cranial cavity and brain, percutaneous approach, new 
technology group 6) that describes the administration of eladocagene 
exuparvovec became effective October 1, 2020 (FY 2021) and a single 
case was previously identified in the data in MS-DRG 829 
(Myeloproliferative Disorders or Poorly Differentiated Neoplasms with 
Other Procedures with CC/MCC) with an average length of stay of 2 days 
and average costs of $1,544, as discussed in the FY 2023 IPPS/LTCH PPS 
final rule (87 FR 48854). We further note that, as also discussed in 
prior rulemaking, the creation of a code to describe a technology that 
is utilized in the performance of a procedure or service does not 
require FDA approval of the technology nor is the proposed and final 
assignment of a procedure code to an MS-DRG dependent upon a product's 
FDA approval (86 FR 44806).
    Several commenters provided general feedback on the subject of cell 
and gene therapies for CMS' consideration in association with the Pre-
MDC MS-DRG 018 proposed rule discussion. Notably, commenters suggested 
that CMS: (1) issue a Request for Information (RFI) to obtain 
additional insight on provider experiences, including information on 
the therapies under development and expected to become available in the 
near future, as well as features of their administration and the 
affected patient populations, (2) develop a payment model or long-term 
solution for appropriate payment that also accounts for products whose 
new technology add-on payment is expiring, and (3) ensure transparency 
in the refinement process by collaborating with stakeholders.
    We appreciate the commenters' recommendations and feedback as we 
continue to examine the complexities involved with these therapies 
under the IPPS. We intend to address any potential modifications to the 
MS-DRGs through future notice and comment rulemaking.
3. MDC 01 (Diseases and Disorders of the Nervous System)
a. Logic for MS-DRGs 023 Through 027
    As discussed in the FY 2026 IPPS/LTCH PPS proposed rule (90 FR 
18017

[[Page 36561]]

through 18025), we received three separate but related requests to 
review the MS-DRG assignments for a subset of procedures assigned to 
MS-DRGs 023 through 027. In this section of the preamble of this FY 
2026 IPPS/LTCH PPS final rule, we discuss each of these separate, but 
related requests.
    The first request was to create a new MS-DRG for cases involving 
``chemotherapy implants'' and cases involving ``epilepsy with 
neurostimulator.'' The requestor noted chemotherapy implants are used 
to treat patients with brain tumors. They are implanted into the brain 
during the craniotomy procedure at the time of tumor resection. Upon 
implantation, these devices immediately release radiation or 
chemotherapeutic agents. This approach enables treatment to be 
initiated at the time of tumor resection without undue delay. 
``Epilepsy with neurostimulator'' cases involve devices used in the 
treatment of medically intractable epilepsy. The neurostimulator is 
implanted in the skull via a craniotomy and is connected to electrodes 
that are implanted on the surface of the brain or in the brain through 
either a craniotomy or a burr hole(s). According to the requestor, like 
the procedure to insert a chemotherapy implant, the craniotomy 
procedure to insert the neurostimulator lead is performed under general 
anesthesia and the procedure typically takes four hours.
    We noted in the proposed rule that the requestor performed their 
own analysis of Medicare claims data and stated they found that the 
average costs of cases involving chemotherapy implants and cases 
involving epilepsy with neurostimulators are significantly higher than 
the average costs of other procedures currently grouped within MS-DRG 
023 (Craniotomy with Acute Complex CNS Principal Diagnosis with MCC or 
Antineoplastic Implant). The requestor asserted that as a result, these 
cases are not being adequately paid under the current MS-DRG. 
Therefore, given the limited options within the existing MS-DRG 
structure, the requestor recommended that CMS extract cases reporting 
the insertion of a chemotherapy implant and cases reporting a 
neurostimulator generator inserted into the skull with the insertion of 
a neurostimulator lead into the brain, and a principal diagnosis of 
epilepsy from MS-DRG 023 and create a new MS-DRG for these cases with a 
payment rate that better aligns with the resource utilization 
associated with these procedures. The requestor stated that this 
recommendation appeared to be reasonable, given that CMS has already 
determined that these two subsets of cases are clinically coherent by 
virtue of them being currently assigned to the same MS-DRG.
    To begin our analysis, as discussed in the proposed rule, we 
reviewed the GROUPER logic for MS-DRGs 023 and 024 (Craniotomy with 
Acute Complex CNS Principal Diagnosis without MCC). We noted in the 
proposed rule that the requestor is correct that currently, cases 
involving ``chemotherapy implants'' and cases involving ``epilepsy with 
neurostimulator'' are assigned to the higher severity level MS-DRG 023. 
MS-DRGs 023 and 024 contain a logic list referred to as ``Chemotherapy 
Implant.'' This logic list includes the following four ICD-10-PCS 
codes:
[GRAPHIC] [TIFF OMITTED] TR04AU25.040

    We stated that the ``Chemotherapy Implant'' logic list was created 
for cases reporting the implantation of a chemotherapeutic agent and 
devices implanted in the brain, such as implantable chemotherapeutic 
wafers. Additionally, we noted MS-DRGs 023 and 024 contain a logic list 
referred to as ``Epilepsy Principal Diagnosis'' that includes 58 ICD-
10-CM diagnosis codes that describe epilepsy, and a logic list referred 
to as ``Neurostimulator'' that includes the following three ICD-10-PCS 
procedure code combinations:
    <bullet> 0NH00NZ (Insertion of neurostimulator generator into 
skull, open approach), in combination with 00H00MZ (Insertion of 
neurostimulator lead into brain, open approach);
    <bullet> 0NH00NZ (Insertion of neurostimulator generator into 
skull, open approach), in combination with 00H03MZ (Insertion of 
neurostimulator lead into brain, percutaneous approach); and
    <bullet> 0NH00NZ (Insertion of neurostimulator generator into 
skull, open approach), in combination with 00H04MZ (Insertion of 
neurostimulator lead into brain, percutaneous endoscopic approach).
    These two logic lists were created to capture cases involving the 
use of the Responsive Neurostimulation (RNS)[supreg] neurostimulator, a 
treatment option for persons diagnosed with medically intractable 
epilepsy. The RNS[supreg] neurostimulator includes a cranially 
implanted programmable neurostimulator connected to one or two depth 
and/or subdural cortical strip leads that are surgically placed in or 
on the brain at the seizure focus. The implanted neurostimulator 
continuously monitors brain electrical activity and is programmed by a 
physician to detect abnormal patterns of electrical activity that the 
physician believes may lead to seizures (epileptiform activity).
    We refer the reader to the ICD-10 MS-DRG Definitions Manual, 
Version 42.1 (available on the CMS website at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software</a>) for complete documentation of the 
GROUPER logic for MS-DRGs 023 and 024.
    As discussed in the preamble of the proposed rule, we then examined 
claims data from the September 2024 update of the FY 2024 MedPAR file 
for all cases in MS-DRG 023 and compared the results to cases reporting 
one of the four procedure codes that appear under the logic list 
referred to as ``Chemotherapy Implant'' in MS-DRG 023 and for all cases 
reporting a neurostimulator generator inserted into the skull with the 
insertion of a neurostimulator lead into the brain (including cases 
involving the use of the RNS[supreg] neurostimulator), and a principal 
diagnosis of epilepsy. The following table shows our findings:

[[Page 36562]]

[GRAPHIC] [TIFF OMITTED] TR04AU25.041

    As shown in the table, for MS-DRG 023, we identified a total of 
12,136 cases, with an average length of stay of 10 days and average 
costs of $51,132. Of the 12,136 cases in MS-DRG 023, there were 176 
cases reporting the insertion of a chemotherapy implant with an average 
length of stay of 6.4 days and average costs of $49,743. Additionally, 
there were 68 cases describing a neurostimulator generator inserted 
into the skull with the insertion of a neurostimulator lead into the 
brain (including cases involving the use of the RNS[supreg] 
neurostimulator) that had a principal diagnosis of epilepsy with an 
average length of stay of 2.4 days and average costs of $66,303.
    As the data show, the 68 cases in MS-DRG 023 describing a 
neurostimulator generator inserted into the skull with the insertion of 
a neurostimulator lead into the brain (including cases involving the 
use of the RNS[supreg] neurostimulator) and a principal diagnosis of 
epilepsy have average costs that are higher than the average costs of 
all cases in MS-DRG 023 ($66,303 compared to $51,132), and they have an 
average length of stay that is shorter (2.4 days compared to 10 days). 
The 176 cases in MS-DRG 023 reporting the insertion of a chemotherapy 
implant have average costs that are lower than the average costs of all 
cases in MS-DRG 023 ($49,743 compared to $51,132), and they have an 
average length of stay that is shorter (6.4 days compared to 10 days).
    We stated we reviewed the claims data, and did not believe the data 
support creating a new MS-DRG for cases reporting the insertion of a 
chemotherapy implant and cases describing a neurostimulator generator 
inserted into the skull with the insertion of a neurostimulator lead 
into the brain (including cases involving the use of the RNS[supreg] 
neurostimulator) and a principal diagnosis of epilepsy. We stated that 
the results of the claims analysis as previously summarized indicate 
the cases reporting the insertion of a chemotherapy implant demonstrate 
comparable resource utilization with other cases in their currently 
assigned MS-DRG. Further, the claims data analysis indicates that these 
two subsets of cases, that is cases reporting the insertion of a 
chemotherapy implant and cases describing a neurostimulator generator 
inserted into the skull with the insertion of a neurostimulator lead 
into the brain (including cases involving the use of the RNS[supreg] 
neurostimulator) and a principal diagnosis of epilepsy, do not 
demonstrate comparable resource utilization. The cases in MS-DRG 023 
reporting the insertion of a chemotherapy implant have average costs 
that are lower than the average costs of cases describing a 
neurostimulator generator inserted into the skull with the insertion of 
a neurostimulator lead into the brain and a principal diagnosis of 
epilepsy ($49,743 compared to $66,303), and they have an average length 
of stay that is longer (6.4 days compared to 2.4 days).
    Therefore, based on review of the claims data, we did not propose 
to create a new MS-DRG for cases reporting the insertion of a 
chemotherapy implant and cases describing a neurostimulator generator 
inserted into the skull with the insertion of a neurostimulator lead 
into the brain (including cases involving the use of the RNS[supreg] 
neurostimulator) and a principal diagnosis of epilepsy for FY 2026. 
However, while our analysis of the claims data did not support creating 
a new MS-DRG for cases reporting the insertion of a chemotherapy 
implant and cases describing a neurostimulator generator inserted into 
the skull with the insertion of a neurostimulator lead into the brain 
(including cases involving the use of the RNS[supreg] neurostimulator) 
and a principal diagnosis of epilepsy, as discussed in the proposed 
rule, cases describing a neurostimulator generator inserted into the 
skull with the insertion of a neurostimulator lead into the brain 
(including cases involving the use of the RNS[supreg] neurostimulator) 
and a principal diagnosis of epilepsy have average costs that are 
higher than the average costs of all cases in MS-DRG 023, with a 
shorter average length of stay. Accordingly, in the proposed rule we 
stated we determined that further analysis of cases reporting a 
neurostimulator generator inserted into the skull with the insertion of 
a neurostimulator lead into the brain (including cases involving the 
use of the RNS[supreg] neurostimulator), and a principal diagnosis of 
epilepsy was needed in conjunction with the separate but related 
requests we received to review the MS-DRG assignments for a subset of 
procedures also assigned to MS-DRGs 023 through 027 for the FY 2026 
IPPS/LTCH PPS proposed rule to ensure clinical coherence between these 
cases and the other cases with which they would potentially be grouped, 
as discussed later in this section.
    As noted previously, MS-DRGs 023 and 024 contain a logic list 
referred to as ``Chemotherapy Implant'' that includes the following 
four ICD-10-PCS codes:
[GRAPHIC] [TIFF OMITTED] TR04AU25.042


[[Page 36563]]


    In the proposed rule we stated that during our review of the 
GROUPER logic for MS-DRGs 023 and 024, we identified that the following 
four ICD-10-PCS procedure codes describing the insertion of a 
radioactive element were inadvertently excluded from the ``Chemotherapy 
Implant'' logic list:
[GRAPHIC] [TIFF OMITTED] TR04AU25.043

    In review of this finding, we stated we analyzed claims data from 
the September 2024 update of the FY 2024 MedPAR file for MS-DRGs 023, 
024, 025, 026, and 027 for all cases and for cases reporting procedure 
codes 00H001Z, 00H005Z, 00H031Z, or 00H041Z. The findings from our 
analysis are shown in the following table.
[GRAPHIC] [TIFF OMITTED] TR04AU25.044

    As the data show, we found four cases reporting procedure code 
00H001Z, 00H005Z, 00H031Z, or 00H041Z in MS-DRG 025, with average costs 
of $40,199 and an average length of stay of 3.8 days. We reviewed this 
issue and noted in the proposed rule radioactive elements are inserted 
into the brain to deliver a targeted concentrated dose of radiation 
directly to a brain tumor or tumor bed. They are primarily used to 
treat recurrent brain metastases or other aggressive brain cancers, as 
it allows for high-dose radiation delivery specifically to the tumor 
site while minimizing damage to surrounding healthy brain tissue. 
Although we did not identify many cases, we stated we believe the four 
procedure codes describing the insertion of a radioactive element into 
the brain are clinically aligned with the procedure codes currently 
included in the ``Chemotherapy Implant'' logic list in MS-DRGs 023 and 
024.
    Therefore, for clinical consistency we proposed to add procedure 
codes 00H001Z, 00H005Z, 00H031Z, and 00H041Z to the ``Chemotherapy 
Implant'' logic list in MS-DRGs 023 and 024, effective October 1, 2025, 
for FY 2026. We also proposed to change the description of the logic 
list in MS-DRGs 023 and 024 from ``Chemotherapy Implant'' to 
``Antineoplastic Implant'' to better reflect the GROUPER logic that 
includes ICD-10-PCS procedure codes describing antineoplastic agents 
implanted in the brain.
    Comment: Commenters supported the proposals to add procedure codes 
00H001Z, 00H005Z, 00H031Z, and 00H041Z to the ``Chemotherapy Implant'' 
logic list in MS-DRGs 023 and 024 and to change the description of the 
logic list in MS-DRGs 023 and 024 from ``Chemotherapy Implant'' to 
``Antineoplastic Implant'', effective October 1, 2025, for FY 2026.
    Response: We appreciate the commenters' support.
    After consideration of the public comments we received, we are 
finalizing our proposal to add procedure codes 00H001Z, 00H005Z, 
00H031Z, and 00H041Z to the ``Chemotherapy Implant'' logic list in MS-
DRGs 023 and 024, without modification, effective October 1, 2025, for 
FY 2026. We are also finalizing the change of the description of the 
logic list in MS-DRGs 023 and 024 from ``Chemotherapy Implant'' to 
``Antineoplastic Implant''.
    As mentioned previously, and as discussed in the FY 2026 IPPS/LTCH 
PPS proposed rule, we received three separate but related requests to 
review and reconsider the MS-DRG assignments for a subset of procedures 
assigned to MS-DRGs 023 through 027. The second and third request 
involve the MS-DRG assignment of cases reporting procedure codes 
describing the insertion of deep brain stimulators (DBS). Deep brain 
stimulation is a surgical treatment that involves the implantation of a 
neurostimulator, used in the treatment of essential tremor, Parkinson's 
disease, dystonia, epilepsy, obsessive-compulsive disorder and chronic 
pain. A DBS system consists of one or two leads that are placed 
stereotactically at defined targets deep within the brain via one or 
two burr holes created in the skull. The lead is then connected to an 
extension that is tunneled under the skin, down the neck, and connected 
to a programmable neurostimulator generator that is placed under the 
skin.

[[Page 36564]]

    The second request we received was to reassign cases reporting the 
implantation of a DBS system from the lower (without MCC) severity 
level MS-DRG 024 to the higher (MCC) severity level MS-DRG 023, even if 
there is no MCC reported. The requestor suggested that if finalized, 
the title for MS-DRG 023 should be revised to reflect ``Craniotomy with 
Acute Complex Central Nervous System Principal Diagnosis with MCC or 
Chemotherapy Implant or Major Device Implant or Epilepsy with 
Neurostimulator.''
    We stated in the proposed rule that the requestor performed their 
own analysis and stated they found that the majority of cases reporting 
the implantation of a DBS system are assigned to the lower severity 
level MS-DRG 024. The requestor also stated that in their analysis, the 
cases reporting the implantation of a DBS system assigned to MS-DRG 024 
have average costs that are 20 percent greater than all cases in MS-DRG 
024. The requestor asserted that reassigning cases reporting the 
implantation of a DBS system from the lower (without MCC) severity 
level MS-DRG 024 to the higher (with MCC) severity level MS-DRG 023, 
even if there is no MCC reported, would better recognize hospital 
resource utilization when the DBS systems are inserted.
    We stated in the proposed rule that the requestor identified cases 
reporting the implantation of a DBS system by the presence of the 
following procedure code combinations:
    <bullet> 0JH60DZ (Insertion of multiple array stimulator generator 
into chest subcutaneous tissue and fascia, open approach), in 
combination with 00H00MZ (Insertion of neurostimulator lead into brain, 
open approach);
    <bullet> 0JH60DZ (Insertion of multiple array stimulator generator 
into chest subcutaneous tissue and fascia, open approach), in 
combination with 00H03MZ (Insertion of neurostimulator lead into brain, 
percutaneous approach);
    <bullet> 0JH60EZ (Insertion of multiple array rechargeable 
stimulator generator into chest subcutaneous tissue and fascia, open 
approach), in combination with 00H00MZ (Insertion of neurostimulator 
lead into brain, open approach); and
    <bullet> 0JH60EZ (Insertion of multiple array rechargeable 
stimulator generator into chest subcutaneous tissue and fascia, open 
approach), in combination with 00H03MZ (Insertion of neurostimulator 
lead into brain, percutaneous approach).
    To begin our analysis, as discussed in the proposed rule, we again 
reviewed the GROUPER logic for MS-DRGs 023 and 024. The GROUPER logic 
for MS-DRGs 023 and 024 also contains 78 procedure code combinations 
representing the insertion of neurostimulator generator and a 
neurostimulator lead that are captured under a list referred to as 
``Major Device Implant.'' The procedure codes describing the insertion 
of a neurostimulator generator on this list describe insertion of the 
neurostimulator generator into the subcutaneous areas of the chest, 
back, or abdomen, as well as into the skull. The procedure codes 
describing the insertion of a neurostimulator lead describe the 
insertion of the lead into the brain or the cerebral ventricle. We 
refer the reader to the ICD-10 MS-DRG Definitions Manual, Version 42.1 
(available on the CMS website at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software</a>) for complete documentation of the GROUPER logic for MS-
DRGs 023 and 024.
    In our analysis of this issue, we stated that we agree that the 
four procedure code combinations discussed previously that were 
identified by this requestor are included in the ``Major Device 
Implant'' logic list of MS-DRGs 023 and 024, but we noted in the 
proposed rule that 32 additional procedure code combinations exist on 
the ``Major Device Implant'' logic list that also describe the 
implantation of a DBS system by describing the insertion of a 
neurostimulator generator into the subcutaneous areas of the chest, 
back, or abdomen in combination with a code describing the insertion of 
a neurostimulator lead into the brain. We refer the reader to Table 
6P.2a associated with the FY 2026 IPPS/LTCH PPS proposed rule (and 
available at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps</a>) for the list of the 36 ICD-10-PCS 
procedure code combinations in the logic of MS-DRGs 023 and 024 in the 
``Major Device Implant'' logic list that we identified that describe 
the implantation of a DBS system and therefore were included in our 
analysis.
    We stated we then examined claims data from the September 2024 
update of the FY 2024 MedPAR file for all cases in MS-DRGs 023 and 024 
and compared the results to cases reporting the implantation of a DBS 
system by reporting a procedure code combination that describes the 
insertion of a neurostimulator generator into the subcutaneous areas of 
the chest, back, or abdomen in combination with a code describing the 
insertion of a neurostimulator lead into the brain. The following table 
shows our findings:
[GRAPHIC] [TIFF OMITTED] TR04AU25.045

    As shown in the table, for MS-DRG 023, we identified a total of 
12,136 cases, with an average length of stay of 10 days and average 
costs of $51,132. Of the 12,136 cases in MS-DRG 023, there were 26 
cases reporting the implantation of a DBS system with an average length 
of stay of 8.3 days and average costs of $81,947. For MS-DRG 024, we 
identified a total of 4,624 cases, with an average length of stay of 5 
days and average costs of $35,516. Of the 4,624 cases in MS-DRG 024, 
there were 432 cases reporting the implantation of a DBS system with an 
average length of stay of 1.7 days and average costs of $43,032.
    In the proposed rule, we stated we reviewed the claims data, and 
the data did not support reassignment of the cases reporting the 
implantation of a DBS system from MS-DRG 024 to MS-DRG 023 even if 
there is no MCC

[[Page 36565]]

reported. We stated the results of the claims analysis as previously 
summarized indicate the cases reporting the implantation of a DBS 
system, without reporting a secondary diagnosis designated as an MCC, 
that are currently assigned to MS-DRG 024, have average costs that are 
lower than the average costs of all cases in MS-DRG 023 ($43,032 
compared to $51,132), and they have an average length of stay that is 
shorter (1.7 days compared to 10 days). While the average costs of 
these cases are higher than the average costs of all cases in MS-DRG 
024 ($43,032 compared to $35,516), we stated we believe it would not be 
appropriate to reassign these cases into the higher severity level MS-
DRG 023, even if there is no MCC reported, because the cases would not 
be coherent with regard to resource utilization. The cases reporting 
the implantation of a DBS system, without reporting a secondary 
diagnosis designated as an MCC, that are currently assigned to MS-DRG 
024 have average costs that are $8,100 lower than the average costs of 
all cases in MS-DRG 023. Therefore, we did not propose to reassign 
cases reporting the implantation of a DBS system from the lower 
(without MCC) severity level MS-DRG 024 to the higher (with MCC) 
severity level MS-DRG 023, even if there is no MCC reported. However, 
while the analysis of the claims data did not support reassigning the 
cases reporting the implantation of a DBS system from the lower 
(without MCC) severity level MS-DRG 024 to the higher (MCC) severity 
level MS-DRG 023 even if there is no MCC reported, as discussed, we 
stated our analysis of the claims data found the average costs of the 
cases reporting the implantation of a DBS system are higher than all 
cases in their respective MS-DRGs, while the average lengths of stay 
are shorter. Accordingly, and as discussed later in this section, we 
stated we determined that further analysis of cases reporting the 
implantation of a DBS system is needed in conjunction with the separate 
but related requests we received to review the MS-DRG assignments for a 
subset of procedures also assigned to MS-DRGs 023 through 027 for the 
FY 2026 IPPS/LTCH PPS proposed rule to ensure clinical coherence 
between these cases and the other cases with which they may potentially 
be grouped.
    The third request we received, as discussed in the proposed rule, 
was to have all cases reporting the concomitant insertion of a DBS 
generator and lead assigned to MS-DRGs 023 and 024. This requestor 
performed their own analysis and stated they found 76 claims reporting 
procedure codes describing the insertion of a DBS generator and a lead 
assigned to MS-DRGs 026 and 027 (Craniotomy and Endovascular 
Intracranial Procedures with CC, and without CC/MCC, respectively) and 
found that the average costs of these cases were 54% and 63% higher 
than the average of all cases in MS-DRGs 026 and 027, respectively. The 
requestor stated that placement of a complete DBS system, which 
requires placement of both the generator and the lead, during a single 
procedure, appears to be an efficacious and well-tolerated procedure. 
The requestor asserted that the relatively low reimbursement in MS-DRGs 
026 and 027 can limit patient access to a single stage procedure.
    This requestor identified cases reporting the implantation of a DBS 
system by the presence of the following procedure code combinations:
    <bullet> 0JH60DZ (Insertion of multiple array stimulator generator 
into chest subcutaneous tissue and fascia, open approach), in 
combination with 00H00MZ (Insertion of neurostimulator lead into brain, 
open approach);
    <bullet> 0JH60DZ (Insertion of multiple array stimulator generator 
into chest subcutaneous tissue and fascia, open approach), in 
combination with 00H03MZ (Insertion of neurostimulator lead into brain, 
percutaneous approach);
    <bullet> 0JH60EZ (Insertion of multiple array rechargeable 
stimulator generator into chest subcutaneous tissue and fascia, open 
approach), in combination with 00H00MZ (Insertion of neurostimulator 
lead into brain, open approach); and
    <bullet> 0JH60EZ (Insertion of multiple array rechargeable 
stimulator generator into chest subcutaneous tissue and fascia, open 
approach), in combination with 00H03MZ (Insertion of neurostimulator 
lead into brain, percutaneous approach);
    <bullet> 0JH60BZ (Insertion of single array stimulator generator 
into chest subcutaneous tissue and fascia, open approach), in 
combination with 00H00MZ (Insertion of neurostimulator lead into brain, 
open approach); and
    <bullet> 0JH60BZ (Insertion of single array stimulator generator 
into chest subcutaneous tissue and fascia, open approach), in 
combination with 00H03MZ (Insertion of neurostimulator lead into brain, 
percutaneous approach).
    In the proposed rule, we stated to begin our analysis, we again 
reviewed the GROUPER logic for MS-DRG 023 and 024. As mentioned 
previously, the GROUPER logic for MS-DRGs 023 and 024 contains 78 
procedure code combinations representing the insertion of 
neurostimulator generator and a neurostimulator lead that are captured 
under a list referred to as ``Major Device Implant.'' The procedure 
codes describing the insertion of a neurostimulator generator on this 
list describe insertion of the neurostimulator generator into the 
subcutaneous areas of the chest, back, or abdomen, as well as into the 
skull.
    In reviewing this request, we noted in the proposed rule that the 
procedure code combinations in MS-DRG 023 and 024 captured under the 
``Major Device Implant'' logic list that describe the insertion of a 
neurostimulator generator into the subcutaneous areas of the chest, 
back, or abdomen, all describe the insertion of a multiple array 
stimulator generator or a rechargeable multiple array stimulator 
generator. We further noted that procedure code combinations describing 
the insertion of a single array stimulator generator or a rechargeable 
single array stimulator generator into the subcutaneous areas of the 
chest, back, or abdomen and a neurostimulator lead are not captured 
under the ``Major Device Implant'' logic list, therefore MS-DRGs 025, 
026, and 027 (Craniotomy and Endovascular Intracranial Procedures with 
MCC, with CC, and without CC/MCC, respectively) are assigned based on 
the reporting of the ICD-10-PCS procedure code describing the insertion 
of the neurostimulator into the brain. We refer the reader to the ICD-
10 MS-DRG Definitions Manual, Version 42.1 (available on the CMS 
website at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/ms-drg-classifications-and-software</a>) for 
complete documentation of the GROUPER logic for MS-DRGs 023, 024, 025, 
026, and 027.
    In the proposed rule, we stated we identified 36 ICD-10-PCS 
procedure code combinations that would describe the implantation of a 
DBS system with a single array stimulator generator or a rechargeable 
single array stimulator generator and the insertion of a 
neurostimulator lead into the brain. We refer the reader to Table 6P.2b 
associated with the FY 2026 IPPS/LTCH PPS proposed rule and this final 
rule (available at: <a href="https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps">https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps</a>) for the list of the 36 ICD-10-PCS 
procedure code combinations we identified that describe the 
implantation of a DBS system with a single array stimulator generator 
or a rechargeable single array stimulator generator and the insertion 
of a neurostimulator lead into the brain.

[[Page 36566]]

    As discussed in the proposed rule, we then examined claims data 
from the September 2024 update of the FY 2024 MedPAR file for all cases 
in MS-DRGs 025, 026, and 027 and compared the results to cases 
reporting a procedure code combination that describes the insertion of 
a single array stimulator generator or a rechargeable single array 
stimulator generator into the subcutaneous areas of the chest, back, or 
abdomen in combination with a code describing the insertion of a 
neurostimulator lead into the brain. The following table shows our 
findings:
[GRAPHIC] [TIFF OMITTED] TR04AU25.046

    As shown in the table, for MS-DRG 025, we identified a total of 
21,059 cases, with an average length of stay of 8.6 days and average 
costs of $40,215. Of those 21,059 cases, there were 5 cases reporting 
the insertion of a single array generator and insertion of 
neurostimulator lead into brain with average costs higher than the 
average costs in the FY 2024 MedPAR file for MS-DRG 025 ($73,168 
compared to $40,215) and a shorter average length of stay (5 days 
compared to 8.6 days). In MS-DRG 026, we identified a total of 5,833 
cases, with an average length of stay of 4.1 days and average costs of 
$28,404. Of the 5,833 cases in MS-DRG 026, there were 25 cases 
reporting the insertion of a single array generator and insertion of 
neurostimulator lead into brain with average costs higher than the 
average costs in the FY 2024 MedPAR file for M

[…truncated; see source link]
Indexed from Federal Register on August 4, 2025.

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