Proposed Rule2022-10458

Current Good Manufacturing Practice, Certification, Postmarketing Safety Reporting, and Labeling Requirements for Certain Medical Gases

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Published
May 23, 2022

Issuing agencies

Health and Human Services DepartmentFood and Drug Administration

Abstract

The Food and Drug Administration (FDA, the Agency, or we) is proposing new regulations that would amend the requirements concerning current good manufacturing practice (CGMP) and postmarketing safety reporting that apply to certain medical gases. FDA further proposes to establish regulations regarding certification of designated medical gases and amend the labeling regulations that apply to certain medical gases. This action, if finalized, will clarify the regulatory obligations of entities that manufacture, process, pack, label, or distribute certain medical gases, as well as reduce regulatory burden in this area. This proposed rule is intended to establish requirements that are more specifically tailored to the medical gas industry.

Full Text

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<title>Federal Register, Volume 87 Issue 99 (Monday, May 23, 2022)</title>
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[Federal Register Volume 87, Number 99 (Monday, May 23, 2022)]
[Proposed Rules]
[Pages 31302-31356]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-10458]



[[Page 31301]]

Vol. 87

Monday,

No. 99

May 23, 2022

Part II





 Department of Health and Human Services





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Food and Drug Administration





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21 CFR Parts 4, 16, 201, et al.





Current Good Manufacturing Practice, Certification, Postmarketing 
Safety Reporting, and Labeling Requirements for Certain Medical Gases; 
Proposed Rule

Federal Register / Vol. 87, No. 99 / Monday, May 23, 2022 / Proposed 
Rules

[[Page 31302]]


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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Food and Drug Administration

21 CFR Parts 4, 16, 201, 210, 211, 213, 230, 314, and 514

[Docket No. FDA-2021-N-1333]
RIN 0910-AH96


Current Good Manufacturing Practice, Certification, Postmarketing 
Safety Reporting, and Labeling Requirements for Certain Medical Gases

AGENCY: Food and Drug Administration, HHS.

ACTION: Proposed rule.

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SUMMARY: The Food and Drug Administration (FDA, the Agency, or we) is 
proposing new regulations that would amend the requirements concerning 
current good manufacturing practice (CGMP) and postmarketing safety 
reporting that apply to certain medical gases. FDA further proposes to 
establish regulations regarding certification of designated medical 
gases and amend the labeling regulations that apply to certain medical 
gases. This action, if finalized, will clarify the regulatory 
obligations of entities that manufacture, process, pack, label, or 
distribute certain medical gases, as well as reduce regulatory burden 
in this area. This proposed rule is intended to establish requirements 
that are more specifically tailored to the medical gas industry.

DATES: Submit either electronic or written comments on the proposed 
rule by August 22, 2022. Submit written comments (including 
recommendations) on the collection of information under the Paperwork 
Reduction Act of 1995 by July 22, 2022.

ADDRESSES: You may submit comments as follows. Please note that late, 
untimely filed comments will not be considered. Electronic comments 
must be submitted on or before August 22, 2022. The <a href="https://www.regulations.gov">https://www.regulations.gov</a> electronic filing system will accept comments until 
11:59 p.m. Eastern Time at the end of August 22, 2022. Comments 
received by mail/hand delivery/courier (for written/paper submissions) 
will be considered timely if they are postmarked or the delivery 
service acceptance receipt is on or before that date.

Electronic Submissions

    Submit electronic comments in the following way:
    <bullet> Federal eRulemaking Portal: <a href="https://www.regulations.gov">https://www.regulations.gov</a>. 
Follow the instructions for submitting comments. Comments submitted 
electronically, including attachments, to <a href="https://www.regulations.gov">https://www.regulations.gov</a> 
will be posted to the docket unchanged. Because your comment will be 
made public, you are solely responsible for ensuring that your comment 
does not include any confidential information that you or a third party 
may not wish to be posted, such as medical information, your or anyone 
else's Social Security number, or confidential business information, 
such as a manufacturing process. Please note that if you include your 
name, contact information, or other information that identifies you in 
the body of your comments, that information will be posted on <a href="https://www.regulations.gov">https://www.regulations.gov</a>.
    <bullet> If you want to submit a comment with confidential 
information that you do not wish to be made available to the public, 
submit the comment as a written/paper submission and in the manner 
detailed (see ``Written/Paper Submissions'' and ``Instructions'').

Written/Paper Submissions

    Submit written/paper submissions as follows:
    <bullet> Mail/Hand delivery/Courier (for written/paper 
submissions): Dockets Management Staff (HFA-305), Food and Drug 
Administration, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852.
    <bullet> For written/paper comments submitted to the Dockets 
Management Staff, FDA will post your comment, as well as any 
attachments, except for information submitted, marked and identified, 
as confidential, if submitted as detailed in ``Instructions.''
    Instructions: All submissions received must include the Docket No. 
FDA-2021-N-1333 for ``Current Good Manufacturing Practice, 
Certification, Postmarketing Safety Reporting, and Labeling 
Requirements for Certain Medical Gases.'' Received comments, those 
filed in a timely manner (see ADDRESSES), will be placed in the docket 
and, except for those submitted as ``Confidential Submissions,'' 
publicly viewable at <a href="https://www.regulations.gov">https://www.regulations.gov</a> or at the Dockets 
Management Staff between 9 a.m. and 4 p.m., Monday through Friday, 240-
402-7500.
    <bullet> Confidential Submissions--To submit a comment with 
confidential information that you do not wish to be made publicly 
available, submit your comments only as a written/paper submission. You 
should submit two copies total. One copy will include the information 
you claim to be confidential with a heading or cover note that states 
``THIS DOCUMENT CONTAINS CONFIDENTIAL INFORMATION.'' The Agency will 
review this copy, including the claimed confidential information, in 
its consideration of comments. The second copy, which will have the 
claimed confidential information redacted/blacked out, will be 
available for public viewing and posted on <a href="https://www.regulations.gov">https://www.regulations.gov</a>. 
Submit both copies to the Dockets Management Staff. If you do not wish 
your name and contact information to be made publicly available, you 
can provide this information on the cover sheet and not in the body of 
your comments and you must identify this information as 
``confidential.'' Any information marked as ``confidential'' will not 
be disclosed except in accordance with 21 CFR 10.20 and other 
applicable disclosure law. For more information about FDA's posting of 
comments to public dockets, see 80 FR 56469, September 18, 2015, or 
access the information at: <a href="https://www.govinfo.gov/content/pkg/FR-2015-09-18/pdf/2015-23389.pdf">https://www.govinfo.gov/content/pkg/FR-2015-09-18/pdf/2015-23389.pdf</a>.
    Docket: For access to the docket to read background documents or 
the electronic and written/paper comments received, go to <a href="https://www.regulations.gov">https://www.regulations.gov</a> and insert the docket number, found in brackets in 
the heading of this document, into the ``Search'' box and follow the 
prompts and/or go to the Dockets Management Staff, 5630 Fishers Lane, 
Rm. 1061, Rockville, MD 20852, 240-402-7500.
    Submit comments on information collection issues under the 
Paperwork Reduction Act of 1995 to the Office of Management and Budget 
(OMB) at <a href="https://www.reginfo.gov/public/do/PRAMain">https://www.reginfo.gov/public/do/PRAMain</a>. Find these 
particular information collections by selecting ``Currently under 
Review--Open for Public Comments'' or by using the search function. The 
titles of the proposed collections are:

<bullet> Current Good Manufacturing Practice (CGMP): Manufacturing, 
Processing, Packing, and Holding of Drugs; GMP for Finished 
Pharmaceuticals (Including Medical Gases and Active Pharmaceutical 
Ingredients); OMB control number 0910-0139--Revision
<bullet> Requirements on Content and Format of Labeling for Human 
Prescription Drug and Biological Products; OMB control number 0910-
0572--Revision
<bullet> Current Good Manufacturing Practice for Medical Gases; OMB 
control number for 21 CFR part 213--New
<bullet> Certification and Postmarketing Reporting for Designated 
Medical Gases; OMB control number for 21 CFR part 230--New

FOR FURTHER INFORMATION CONTACT: 
    With regard to the proposed rule: David Faranda, Center for Drug 
Evaluation and Research, Food and

[[Page 31303]]

Drug Administration, 10903 New Hampshire Ave., Silver Spring, MD 20993, 
301-796-8767, <a href="/cdn-cgi/l/email-protection#266247504f42086047544748424766404247084e4e5508414950"><span class="__cf_email__" data-cfemail="8fcbeef9e6eba1c9eefdeee1ebeecfe9ebeea1e7e7fca1e8e0f9">[email&#160;protected]</span></a>.
    With regard to the information collection: Domini Bean, Office of 
Operations, Food and Drug Administration, Three White Flint North, 10A-
12M, 11601 Landsdown St., North Bethesda, MD 20852, 301-796-5733, 
<a href="/cdn-cgi/l/email-protection#83d3d1c2d0f7e2e5e5c3e5e7e2adebebf0ade4ecf5"><span class="__cf_email__" data-cfemail="eebebcafbd9a8f8888ae888a8fc086869dc0898198">[email&#160;protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Table of Contents

I. Executive Summary
    A. Purpose of the Proposed Rule
    B. Summary of the Major Provisions of the Proposed Rule
    C. Legal Authority
    D. Costs and Benefits
II. Table of Abbreviations/Commonly Used Acronyms in This Document
III. Background
    A. Introduction
    B. Need for the Regulation
    C. FDA's Current Regulatory Framework
    D. History of the Rulemaking
IV. Legal Authority
V. Description of the Proposed Rule
    A. Proposed Labeling Provisions
    B. Proposed Current Good Manufacturing Practice Provisions
    C. Proposed Certification and Annual Reporting Provisions
    D. Proposed Postmarketing Quality and Safety Reporting 
Provisions
VI. Proposed Effective Date
VII. Preliminary Economic Analysis of Impacts
VIII. Analysis of Environmental Impact
IX. Paperwork Reduction Act of 1995
X. Federalism
XI. Consultation and Coordination With Indian Tribal Governments
XII. References

I. Executive Summary

A. Purpose of the Proposed Rule

    Section 756 of the Consolidated Appropriations Act, 2017 (Pub. L. 
115-31) required FDA to issue final regulations revising the Federal 
drug regulations with respect to medical gases by July 15, 2017. These 
proposed regulations, if finalized, would satisfy that requirement and 
are intended to be more specifically tailored to the medical gas 
industry and decrease regulatory burden where appropriate.
    FDA proposes revisions to its labeling regulations to provide 
clarity and consistency regarding how information is presented in the 
labeling of certain medical gases, as well as to ensure important 
safety information is included. FDA also proposes new CGMP regulations 
for medical gases to reflect appropriate requirements for the 
manufacturing, processing, packing, and holding of such products. These 
proposed regulations generally cover the same categories of provisions 
as the CGMP regulations in parts 210 and 211 (21 CFR parts 210 and 211) 
(hereafter the ``general drug CGMP regulations''), revised as 
appropriate for medical gases. FDA also proposes regulations that would 
implement and clarify the certification process for designated medical 
gases described in section 576 of the Federal Food, Drug, and Cosmetic 
Act (FD&C Act) (21 U.S.C. 360ddd-1). Lastly, FDA proposes new 
postmarketing safety reporting regulations for designated medical gases 
that would address human and animal use and would better reflect the 
development, manufacturing, and distribution of designated medical 
gases.

B. Summary of the Major Provisions of the Proposed Rule

1. Labeling Provisions
    This proposed rule includes several proposed changes to FDA's drug 
labeling regulations including adding certain operations required to 
produce a medical gas to the list of operations that are performed by 
its manufacturer. We propose to revise the requirements for stating the 
ingredients in the labeling of a designated medical gas or medically 
appropriate combination of designated medical gases (referred to 
hereafter in this preamble as ``medically appropriate 
combination'').\1\ We propose to specify requirements for the 
declaration of net quantity of contents in the labeling of designated 
medical gases and medically appropriate combinations.
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    \1\ Section 576(a)(3)(A)(i) of the FD&C Act provides that ``[a] 
designated medical gas for which a certification is granted under 
paragraph (2) is deemed, alone or in combination, as medically 
appropriate, with another designated medical gas or gases for which 
a certification or certifications have been granted, to have in 
effect an approved application under section 505 or 512, subject to 
all applicable postapproval requirements,'' for certain indications 
for use. FDA interprets the term ``combination'' in this section to 
mean two or more distinct designated medical gases that are mixed 
together. For example, a mixture of oxygen and nitrous oxide that 
each meet the standards set forth in an official compendium could 
constitute a medically appropriate combination of designated medical 
gases. However, the addition of oxygen to a container that already 
contains oxygen would not result in a medically appropriate 
combination of designated medical gases because only one kind of 
designated medical gas would be present in the container.
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    We propose that all designated medical gases--whether certified for 
human use, animal use, or both--and medically appropriate combinations 
bear labeling that is in a standardized format.
    FDA further proposes revisions to warning statements for certain 
medical gases including that the labeling of medical air and carbon 
monoxide bear certain warning statements. We propose different labeling 
requirements for final use containers and bulk or transport containers. 
We also propose a new oxygen warning statement and graphic warning 
symbol to alert users of the risks of smoking, vaping, and open flames 
near an oxygen container.
    FDA proposes revisions to the medical gas container labeling 
regulations to clarify that the owner of a designated medical gas 
container or a container of a medically appropriate combination can be 
mentioned on the container to facilitate return of the container to the 
owner, and to ensure that product quality issues are directed to the 
appropriate entity.
2. CGMP Provisions
    FDA proposes CGMP regulations specific to medical gases. These 
proposed regulations include many of the same categories of provisions 
as the general drug CGMP regulations but reflect differences in how 
medical gases are manufactured, processed, packed, and held. If 
finalized as proposed, these regulations would represent the minimum 
CGMP for medical gases. Of note, we propose different cleaning 
requirements for medical gases because these gases are generally 
manufactured in a sealed, closed system, and because cleaning at 
inappropriate times can introduce contaminants. Additionally, FDA 
proposes requirements for medical gas containers and closures that are 
similar to the general drug CGMP regulations, with an additional 
proposed requirement that portable cryogenic medical gas containers and 
small cryogenic gas containers for use by individual patients have a 
working gauge to indicate whether there is an adequate supply of gas 
for continued use. This would help users determine when a container 
must be refilled or replaced and when a leaking or venting container is 
empty. We are also not proposing to include time limitations on 
production because medical gases are generally not expected to expire 
or degrade. FDA also proposes that, unlike the salvaging requirements 
under the general drug CGMP regulations, medical gases that have been 
stored improperly may be salvaged unless their containers have been 
subjected to adverse conditions that negatively impact the identity, 
strength, quality, or purity of the product or the integrity of the 
product's container closure.
3. Certification Provisions
    FDA proposes regulations regarding the certification process for 
designated medical gases that are intended to codify the certification 
process and

[[Page 31304]]

provide additional clarity where necessary. These proposed requirements 
would govern the process for applicants to file a certification request 
and supplements as well as the contents of such a request. The 
regulations would set forth requirements concerning the transfer of 
ownership of a certification from one entity to another.
    We are proposing to require the submission of a streamlined annual 
report, including the required contents and timing for submission.
    These proposed regulations would set forth requirements that are 
similar to the recommendations described in the November 2015 draft 
guidance for industry ``Certification Process for Designated Medical 
Gases'' (November 25, 2015, 80 FR 73771) (Ref. 1).
4. Postmarketing Safety Reporting Provisions
    FDA is proposing new postmarketing safety reporting regulations for 
designated medical gases and general safety reporting requirements for 
all certified designated medical gases.
    We also propose adverse event reporting requirements related to the 
use of designated medical gases in humans and animals. For designated 
medical gases that are certified for human use and deemed to have in 
effect an approved application under section 505 of the FD&C Act (21 
U.S.C. 355), we are proposing that applicants and nonapplicants be 
required to report serious adverse events within 15 calendar days from 
when the applicant or nonapplicant has both met certain reporting 
criteria and acquired certain minimum data.
    We are also proposing requirements for the contents and format of 
submissions, including an electronic submission requirement, the 
process for requesting a waiver of the electronic submission 
requirement, recordkeeping requirements, written procedures 
requirements, and patient privacy provisions.
    For designated medical gases that are certified for animal use and 
deemed to have in effect an approved application under section 512 of 
the FD&C Act (21 U.S.C. 360b), we are proposing that applicants and 
nonapplicants be required to submit serious adverse event reports to 
FDA within 15 calendar days from when the applicant or nonapplicant has 
met certain reporting criteria and that recordkeeping requirements 
related to adverse events are maintained.

C. Legal Authority

    Sections 501, 502, 505, 512, 575, 576, and 704 of the FD&C Act (21 
U.S.C. 351, 352, 355, 360b, 360ddd, 360ddd-1, and 374), in conjunction 
with our general rulemaking authority in section 701(a) of the FD&C Act 
(21 U.S.C. 371(a)) serve as our principal legal authority for this 
proposed rule.

D. Costs and Benefits

    The costs of this proposed rule, if finalized, would be primarily 
driven by new labeling requirements, regulatory clarification leading 
to firms becoming compliant with existing requirements, and added CGMP 
requirements including a requirement for portable cryogenic containers 
to have a working gauge. The cost savings of this proposed rule, if 
finalized, would be primarily driven by removing CGMP requirements that 
would not apply to medical gases, such as removing certain building and 
facility requirements, or modifying CGMP requirements so that they 
would be more well-tailored to medical gases, which may streamline 
inspections. The annualized benefits are estimated to be $3.24 million 
at a 7 percent discount rate over 10 years. The annualized costs are 
estimated to be $3.03 million at a 7 percent discount rate over 10 
years.

II. Table of Abbreviations/Commonly Used Acronyms in This Document

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     Abbreviation/acronym                    What it means
------------------------------------------------------------------------
API..........................  Active Pharmaceutical Ingredient.
CDER.........................  Center for Drug Evaluation and Research.
CFR..........................  Code of Federal Regulations.
CGMP.........................  Current Good Manufacturing Practice.
COA..........................  Certificate of Analysis.
CVM..........................  Center for Veterinary Medicine.
FAR..........................  Field Alert Report.
FD&C Act.....................  Federal Food, Drug, and Cosmetic Act.
FDA or Agency................  Food and Drug Administration.
FDASIA.......................  Food and Drug Administration Safety and
                                Innovation Act.
FR...........................  Federal Register.
ICSR.........................  Individual Case Safety Report.
NDA..........................  New Drug Application.
NADA.........................  New Animal Drug Application.
NF...........................  National Formulary.
OMB..........................  Office of Management and Budget.
PRIA.........................  Preliminary Regulatory Impact Analysis.
USP..........................  United States Pharmacopeia.
------------------------------------------------------------------------

III. Background

A. Introduction

    On July 9, 2012, the Food and Drug Administration Safety and 
Innovation Act (FDASIA, Pub. L. 112-144) was signed into law, 
establishing a new marketing pathway and specific requirements for the 
regulation of designated medical gases. Section 756 of the Consolidated 
Appropriations Act, 2017, required FDA to issue final regulations 
revising the Federal drug regulations with respect to medical gases by 
July 15, 2017.
    The Agency has engaged with stakeholders and Congress to evaluate 
the need for changes to regulatory requirements for medical gases. This 
proposed rule is being published to address the areas for which FDA has 
determined regulatory changes are needed.

B. Need for the Regulation

    Medical gases have historically been manufactured, labeled, and 
distributed in a manner different than most other drugs. Under section 
576 of the FD&C Act, the process for obtaining marketing authorization 
for a designated medical gas also differs from the process for 
obtaining marketing authorization for other human and animal drugs. 
Moreover, because of these differences, sponsors of designated medical 
gases do

[[Page 31305]]

not generate the same safety information that sponsors of new drug 
applications (NDAs) and new animal drug applications (NADAs) would 
typically generate, including, for example, an understanding of 
expected adverse events based on clinical trial data. Thus, some 
existing regulations are not well-tailored to addressing designated 
medical gases and other medical gases. FDA is undertaking this 
rulemaking to address these differences, and to decrease regulatory 
burden where appropriate.

C. FDA's Current Regulatory Framework

    Section 1111 of FDASIA established sections 575 through 577 of the 
FD&C Act (21 U.S.C. 360ddd through 360ddd-2) for medical gases. Section 
575(2) of the FD&C Act defines a medical gas as a drug that is 
manufactured or stored in a liquefied, nonliquefied, or cryogenic state 
and administered as a gas. Section 575(1) of the FD&C Act defines a 
designated medical gas as any of the following gases that meet the 
standards set forth in an official compendium: Oxygen, nitrogen, 
nitrous oxide, carbon dioxide, helium, carbon monoxide, and medical 
air. Designated medical gases are also defined to include any other 
medical gas deemed appropriate by the Secretary of the Department of 
Health and Human Services (Secretary),\2\ after taking into account any 
investigational new drug application or investigational new animal drug 
file \3\ for the same medical gas submitted in accordance with 
applicable regulations, unless any period of exclusivity for a new drug 
under section 505(c)(3)(E)(ii) or (j)(5)(F)(ii) of the FD&C Act, or the 
extension of any such period under section 505A of the FD&C Act (21 
U.S.C. 355a), or any period of exclusivity for a new animal drug under 
section 512(c)(2)(F) of the FD&C Act, applicable to such medical gas 
has not expired (section 575(1)(H) of the FD&C Act).
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    \2\ The functions of the Secretary described herein have been 
delegated to FDA.
    \3\ We interpret the term ``investigational new animal drug 
application'' in FD&C Act section 575(1)(H) to refer to an 
``investigational new animal drug file'' to reflect CVM's current 
administrative process for receiving data and information related to 
a new animal drug for investigational use. See 21 CFR part 511.
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    Any person who seeks to initially introduce or deliver for 
introduction into interstate commerce a designated medical gas may file 
with the Secretary a request for certification of a medical gas as a 
designated medical gas (FD&C Act section 576(a)(1)). Any such request 
shall contain a description of the medical gas, the sponsor's name and 
address, the name and address of the facility or facilities where the 
medical gas is or will be manufactured, and any other information the 
Secretary deems appropriate to determine whether the medical gas is a 
designated medical gas (Id.). The certification requested under section 
576(a)(1) of the FD&C Act is deemed to be granted unless, within 60 
days of filing of the request, the Secretary finds that the medical gas 
subject to the certification is not a designated medical gas, the 
request does not contain the information required under section 
576(a)(1) of the FD&C Act or otherwise lacks sufficient information to 
permit the Secretary to determine that the medical gas is a designated 
medical gas, or denying the request is necessary to protect the public 
health (FD&C Act section 576(a)(2)). FDA interprets the period of 60 
days in section 576(a)(2) to mean a period of 60 calendar days.
    Section 576(a)(3)(A)(i) of the FD&C Act provides that a designated 
medical gas for which a certification is granted is deemed, alone or in 
combination, as medically appropriate, with another designated medical 
gas or gases for which a certification or certifications have been 
granted, to have in effect an approved application under section 505 or 
512 of the FD&C Act, subject to all applicable postapproval 
requirements. The deemed approval is for certain indications specified 
in the statute or for any other indication for use for a designated 
medical gas or combination of designated medical gases deemed 
appropriate by the Secretary, unless any period of exclusivity under 
section 505(c)(3)(E)(iii) or (iv), 505(j)(5)(F)(iii) or (iv), or 527 of 
the FD&C Act (21 U.S.C. 360cc), or the extension of any such period 
under section 505A of the FD&C Act, applicable to such indication for 
use for such gas or combination of gases has not expired. Under section 
576(a)(3)(A)(ii) of the FD&C Act, designated medical gases are deemed 
to have met the requirements of section 503(b)(4) of the FD&C Act (21 
U.S.C. 353(b)(4); concerning the labeling of drugs with the symbol ``Rx 
only'') and section 502(f) of the FD&C Act (concerning the labeling of 
drugs with adequate directions for use and adequate warnings against 
certain uses) if the labeling on the final use container bears:
    <bullet> The information required by section 503(b)(4) of the FD&C 
Act;
    <bullet> A warning statement concerning the use of the medical gas 
as determined by the Secretary by regulation; and
    <bullet> Appropriate directions and warnings concerning storage and 
handling.
    Designated medical gases that are deemed to have in effect an 
approved application under section 576(a)(3)(A)(i) of the FD&C Act are 
not eligible for any period of exclusivity for a new drug under section 
505(c) or (j), or 527 of the FD&C Act, or the extension of any such 
period under section 505A of the FD&C Act, on the basis of such deemed 
approval (FD&C Act section 576(a)(3)(B)(i)). In addition, no period of 
exclusivity under section 505(c), 505(j), or 527 of the FD&C Act, or 
the extension of any such period under section 505A of the FD&C Act, 
with respect to an application for a drug product, shall prohibit, 
limit, or otherwise affect the submission, grant, or effect of a 
designated medical gas certification, except as provided in sections 
575(1)(H) and 576(a)(3)(A)(i)(VIII) of the FD&C Act (FD&C Act 
576(a)(3)(B)(ii)).
    Section 576(a)(4)(A) of the FD&C Act affirms the Secretary's 
authority to withdraw or suspend approval of a drug product, including 
a designated medical gas deemed to have in effect an approved 
application under section 505 or 512 of the FD&C Act. The Secretary 
under section 576(a)(4)(B) of the FD&C Act may revoke the grant of a 
designated medical gas certification upon the determination that the 
certification request contains any material omission or falsification.
    Under section 576(b)(1) of the FD&C Act, designated medical gases 
are subject to the requirements under section 503(b)(1) of the FD&C Act 
(concerning the dispensing of certain human drugs only pursuant to a 
prescription) except under the following circumstances:
    <bullet> The Secretary exercises the authority provided in section 
503(b)(3) of the FD&C Act to remove the designated medical gas from the 
requirements of section 503(b)(1) of the FD&C Act;
    <bullet> The gas is approved for use without a prescription 
pursuant to an application under section 505 or 512 of the FD&C Act; or
    <bullet> The use in question is authorized pursuant to another 
provision in the FD&C Act relating to the use of medical products in 
emergencies.
    Notwithstanding section 576(b)(1), section 576(b)(2)(A) of the FD&C 
Act provides that oxygen may be provided without a prescription for use 
in the event of depressurization or other environmental oxygen 
deficiency, or for oxygen deficiency or for use in emergency 
resuscitation when administered by properly trained personnel. For 
oxygen provided without a prescription, section 576(b)(2)(B) provides 
that the requirements of section 503(b)(4) (concerning labeling of 
drugs with the symbol ``Rx only'') are

[[Page 31306]]

deemed to have been met if its labeling bears a warning that it can 
only be used for emergency use, and that for all other medical 
applications a prescription is required.
    Pursuant to section 577 of the FD&C Act, a designated medical gas, 
alone or in a medically appropriate combination with another designated 
medical gas or gases deemed under section 576 to have in effect an 
approved application, shall not be assessed prescription drug user fees 
under section 736(a) of the FD&C Act (21 U.S.C. 379h(a)) or animal drug 
user fees under section 740(a) of the FD&C Act (21 U.S.C. 379j-12(a)) 
on the basis of such deemed approval.
    FDA's drug regulations also include several requirements specific 
to medical gases. FDA labeling regulations under part 201 (21 CFR part 
201) that currently address the labeling of medical gases include the 
following:
    <bullet> Section 201.25(b)(1)(i)(D), which exempts medical gases 
from bar code label requirements that otherwise apply to human 
prescription drug products;
    <bullet> Section 201.161, which exempts certain medical gases from 
specified requirements if, among other things, applicable warning 
statements and information concerning storage and handling are included 
in the labeling; and
    <bullet> Section 201.328, which describes certain labeling 
requirements for portable cryogenic medical gas containers and high-
pressure medical gas cylinders, including a color coding system.
    FDA's CGMP regulations under parts 210 and 211 that currently 
specifically address the manufacturing, labeling, and containers and 
closures for medical gases include the following:
    <bullet> Section 211.94(e), which provides container and closure 
requirements for medical gases, including gas-specific outlet 
connections and label and coloring requirements;
    <bullet> Section 211.125(c), which waives labeling reconciliation 
requirements for 360[deg] wraparound labels on portable cryogenic 
medical gas containers;
    <bullet> Section 211.170(b), which exempts compressed medical gases 
from the requirement to retain reserve samples; and
    <bullet> Section 211.196, which exempts compressed medical gas 
products from the requirement that distribution records contain lot or 
control numbers.

D. History of the Rulemaking

    In developing this proposed rule, FDA held three public workshops 
(Ref. 2), on December 15, 2017, February 9, 2018, and May 11, 2018, and 
opened a docket for public comment (FDA-2018-N-1214).\4\ The Agency 
received several comments from interested stakeholders during the 
public workshops and received more than a dozen comments through the 
docket. Additionally, FDA received one comment in relation to its 
regulatory reform efforts associated with Executive Orders 13771 and 
13777 (FDA-2017-N-5093).\5\ Comments were submitted by industry groups, 
individual manufacturers, and private citizens. FDA has considered 
these comments in developing this proposed rule.
---------------------------------------------------------------------------

    \4\ The announcement for the first two workshops referenced 
Docket No. FDA-2017-N-0001 (82 FR 54353, November 17, 2017). In the 
announcement for the third workshop, FDA announced that the docket 
number would change to FDA-2018-N-1214 and that all comments 
submitted to the first docket would be transferred to the new docket 
number (83 FR 13440, March 29, 2018).
    \5\ These Executive Orders were revoked by Executive Order 
13992.
---------------------------------------------------------------------------

    FDA received comments recommending revisions to requirements that 
commenters believe are not well-tailored to medical gases. Other 
comments addressed safety and handling concerns for medical gases. 
Multiple comments discussed whether FDA should add additional gases to 
the list of designated medical gases. Finally, some comments addressed 
other uses for certain medical gases.

IV. Legal Authority

    Sections 501, 502, 505, 512, 575, 576, 701, and 704 of the FD&C Act 
provide the principal legal authority for this proposed rule. Medical 
gases are generally regulated as prescription drugs under sections 
201(g)(1) and 503(b)(1) of the FD&C Act (though oxygen may be provided 
without a prescription for certain uses specified at section 576(b)(2) 
of the FD&C Act).
    Section 501 of the FD&C Act describes the circumstances under which 
a drug is deemed to be adulterated. Under section 501(a)(2)(B) of the 
FD&C Act, a drug is deemed to be adulterated if the methods used in, or 
the facilities or controls used for, its manufacture, processing, 
packing or holding do not conform to or are not operated or 
administered in conformity with current good manufacturing practice. 
For purposes of section 501(a)(2)(B), ``current good manufacturing 
practice'' includes the implementation of oversight and controls over 
the manufacture of drugs to ensure quality, including managing the risk 
of and establishing the safety of raw materials, materials used in the 
manufacturing of drugs, and finished drug products. Section 502 of the 
FD&C Act describes the circumstances under which a drug is deemed to be 
misbranded. Under section 502(f) of the FD&C Act, a drug is deemed to 
be misbranded unless its labeling bears adequate directions for use and 
such adequate warnings against use where its use may be dangerous to 
health, or against unsafe dosage or methods or duration of 
administration, in such manner and form, as are necessary for the 
protection of users. Under section 704 of the FD&C Act, FDA is 
authorized to inspect, among other things, records in any establishment 
in which prescription drugs or nonprescription drugs intended for human 
use are manufactured, processed, packed, or held bearing on whether 
such products are in violation of the FD&C Act.
    Section 576 of the FD&C Act describes the certification process for 
designated medical gases (as defined in section 575 of the FD&C Act) 
and the effect of certification, the applicability of FDA's 
prescription requirements, and certain labeling requirements. Under 
section 576(a)(3)(A)(i), a certified designated medical gas is subject 
to all applicable postapproval requirements. Under section 505(k) of 
the FD&C Act, FDA has the authority to establish certain postmarketing 
safety reporting regulations for human drugs to enable FDA to determine 
or facilitate a determination as to whether there are or may be grounds 
to invoke section 505(e) of the FD&C Act, which concerns the withdrawal 
or suspension of approval of an NDA or abbreviated new drug application 
(ANDA). Section 512(l) of the FD&C Act authorizes FDA to establish 
postmarketing safety reporting regulations for new animal drugs to 
enable FDA to determine or facilitate a determination as to whether 
there are or may be grounds to withdraw approval of an application 
pursuant to section 512(e) or 512(m)(4) of the FD&C Act.
    Thus, sections 501, 502, 505, 512, 575, 576, and 704 of the FD&C 
Act, in conjunction with our general authority in section 701(a) of the 
FD&C Act to promulgate regulations for the efficient enforcement of the 
FD&C Act, serve as our principal legal authority for this proposed 
rule.

V. Description of the Proposed Rule

    We are proposing to establish new parts 213 and 230 (21 CFR parts 
213 and 230) and amend parts 4, 16, 201, 210, 211, 314, and 514 (21 CFR 
parts 4, 16, 201, 210, 211, 314, and 514). The proposed rule would:
    <bullet> Revise the labeling regulations specific to medical gases;
    <bullet> Establish CGMP requirements specific to medical gases;
    <bullet> Establish regulations governing the designated medical gas 
certification

[[Page 31307]]

process under section 576 of the FD&C Act, including certain 
postapproval requirements; and
    <bullet> Establish postmarketing safety reporting requirements 
specific to designated medical gases.

A. Proposed Labeling Provisions

    FDA proposes revisions to the labeling regulations in part 201 
related to medical gases.
1. Definitions
    Proposed Sec.  201.161(c)(1) defines the term ``designated medical 
gas.'' This definition refers to the statutory definition found in 
section 575(1) of the FD&C Act and is intended to apply to the same 
gases described in section 575(1) of the FD&C Act.
    The term ``final use container'' is defined in proposed Sec.  
201.161(c)(2) to mean a container that is for direct use or access by a 
patient or healthcare provider to administer a designated medical gas 
or medically appropriate combination of designated medical gases. The 
following would not be included in the proposed definition of ``final 
use container'':
    <bullet> Bulk or transport containers, or
    <bullet> containers described in Sec.  868.5655 (21 CFR 868.5655).
    The Agency specifically requests comment on the scope of the 
proposed definition of ``final use container'' and how it relates to 
current labeling practice.
    The term ``bulk or transport container'' is defined in proposed 
Sec.  201.161(c)(3) to mean a container used to transport or store 
designated medical gases or medically appropriate combinations of 
designated medical gases and that is not used directly to administer 
such gases to a patient. This definition would cover storage tanks, 
storage banks, railcars, and tanker trucks. It would also include 
containers that are connected to medical gas supply systems (for 
example, cylinders connected to a hospital's oxygen system).
2. Description of Proposed Provisions
    In Sec.  201.1(b), FDA proposes to add certain operations that are 
required to produce a medical gas to the list of operations that are 
performed by its manufacturer for purposes of section 502(a) and (b)(1) 
of the FD&C Act and as used in the Agency's labeling regulations in 
part 201. FDA proposes that fabricating a medical gas by chemical 
reaction, physical separation, compression of atmospheric air, 
purification (e.g., reprocessing an industrial gas into a medical gas), 
by combining two or more distinct medical gases, or by other process, 
would constitute an operation performed by a manufacturer. Medical 
gases are produced via several different processes, including air 
separation, chemical synthesis, and compression, and FDA believes the 
proposed language would address all such processes. However, under the 
proposed language, repacking or filling operations in which a finished 
medical gas is transferred from one container to another, including a 
container that contains the same medical gas (sometimes referred to as 
transfilling or ``curbside filling'' activities at the point of use), 
would not be considered an operation performed by a manufacturer for 
purposes of the labeling regulations in part 201 (note that 
transfilling would be considered a manufacturing activity for purposes 
of the proposed CGMP regulations under part 213), so long as those 
operations are limited to transferring finished gas from one container 
to another without any change or transformation of the gas. FDA also 
notes that this provision refers to ``medical gas'' instead of 
``designated medical gas'' because the processes used to produce 
designated medical gases and other types of medical gases generally fit 
within the broad categories of processes described in the proposed 
language. The Agency believes that clarification is needed for all 
medical gases, and as such, FDA proposes to list operations that are 
required to produce a medical gas as operations that are performed by 
its manufacturer, regardless of whether the medical gas is a designated 
medical gas.
    FDA proposes to revise Sec.  201.10(d)(2) to specify the format for 
a statement of ingredients for designated medical gases. FDA proposes 
that the statement of the percentage of a designated medical gas in a 
drug product be expressed in percent volume/volume. The intent of this 
provision is to better clarify and consistently display the amount of 
each designated medical gas present in a container.
    FDA proposes to revise Sec.  201.51, which requires the label of a 
prescription drug in package form to bear a declaration of net quantity 
of contents. In paragraph (a), FDA proposes to clarify that the 
statement of quantity of designated medical gases and medically 
appropriate combinations thereof in a gaseous state shall be in terms 
of volume measure. In paragraph (b), FDA proposes to clarify that the 
statement of liquid measure currently described in the regulation would 
not apply to designated medical gases or medically appropriate 
combinations thereof. Rather, FDA proposes separate requirements for 
the declaration of net quantity in the labels of designated medical 
gases or medically appropriate combinations thereof in a:
    <bullet> Gaseous state in a high-pressure container;
    <bullet> Liquefied compressed gas state in a high-pressure 
container; or
    <bullet> Liquefied state in a portable cryogenic container.
    FDA recognizes that some reasonable level of product loss due to 
venting or evaporation is expected during manufacture; thus, minor 
deviations between the stated net quantity and the actual net quantity 
that result from normal venting over time would not cause the product 
to be misbranded. FDA believes that the information in 201.51(b)(1) 
through (3) can be included on a separate sticker or decal on the 
container, and need not be contiguous with other portions of required 
labeling. Under proposed Sec.  201.51(b)(4), labeling for net quantity 
of contents is not required for bulk or transport containers, as 
defined in Sec.  201.161(c)(3). Examples of such containers include 
storage tanks, storage banks, railcars, and tanker trucks.
    FDA proposes that designated medical gases and medically 
appropriate combinations for animal use utilize the same labeling 
information as designated medical gases and medically appropriate 
combinations for human use. Accordingly, FDA proposes to amend Sec.  
201.105 to exempt designated medical gases and medically appropriate 
combinations from the misbranding requirements of section 502(f)(1) of 
the FD&C Act if they are in compliance with the labeling requirements 
of Sec.  201.161. This proposal is intended to allow manufacturers to 
have one set of labeling that can be utilized for both human and animal 
use of their designated medical gases. Manufacturers will not 
necessarily know at the time of manufacture, filling, or distribution 
how their gas will be used. Additionally, FDA expects that requiring 
two separate sets of labeling would create a significant burden on 
industry with little or no benefit to product safety or patient 
outcomes. Because FDA is not aware of any reason to require different 
information for animal use, the Agency believes utilization of the same 
labeling for both human and animal use is appropriate.
    FDA proposes several revisions to Sec.  201.161 in addition to the 
proposed definitions described above. Under proposed paragraph (a), the 
requirements of section 503(b)(4) (concerning when a drug's label must 
bear the symbol ``Rx only'') and 502(f)

[[Page 31308]]

(requiring a drug's labeling to bear adequate directions for use and 
certain adequate warnings) of the FD&C Act are deemed to have been met 
for a designated medical gas or a medically appropriate combination of 
designated medical gases if the labeling on its final use container 
bears certain information depending on the specific gas or gases it 
contains. Each of the proposed revisions is described in turn below.
    FDA proposes revisions to the statement describing the effect of 
compliance with this section. FDA proposes this revision to more 
closely align with section 576(a)(3)(A)(ii) of the FD&C Act. FDA does 
not believe it is necessary for Sec.  201.161(a) to include exemptions 
from 21 CFR 201.100(b)(2), (3), and (c)(1), given that section 
576(a)(3)(A)(ii) of the FD&C Act provides a separate way of satisfying 
the requirements of section 502(f) for designated medical gases.
    FDA proposes to remove the list of gases in Sec.  201.161(a) and 
instead refer to ``designated medical gas.'' FDA proposes these 
revisions to Sec.  201.161 for consistency with section 
576(a)(3)(A)(ii) of the FD&C Act. The proposed revisions would bring 
medical air and carbon monoxide that meet the definition of 
``designated medical gas'' within the scope of Sec.  201.161; these 
gases are not included in the list of gases in Sec.  201.161 currently 
but are designated medical gases for which a certification can be 
granted under section 576 of the FD&C Act. Instead of adding medical 
air and carbon monoxide to the list of gases, FDA proposes to revise 
the first sentence to clarify that all designated medical gases and 
medically appropriate combinations thereof are within the scope of 
Sec.  201.161(a). Should other medical gases be added to the definition 
of ``designated medical gas'' pursuant to section 575(1)(H) of the FD&C 
Act in the future, this proposed revision would make the provisions of 
Sec.  201.161 applicable to such gases without the need to amend this 
regulation further. This proposed revision would also ensure that all 
designated medical gases other than oxygen, including medical air and 
carbon monoxide, and medically appropriate combinations of designated 
medical gases are required to bear the label statements in proposed 
Sec.  201.161(a)(2) in order for sections 503(b)(4) and 502(f) to be 
deemed to be met for such gas or gases.
    FDA proposes to remove the language in Sec.  201.161 referencing 
Sec. Sec.  201.328 and 211.94(e)(2). FDA believes it is unnecessary for 
Sec.  201.161 to reference compliance with Sec. Sec.  201.328 and 
211.94(e)(2) as a condition for sections 503(b)(4) and 502(f) to be 
deemed to be met.
    Additionally, FDA proposes to revise paragraph (a) to require that 
the final use container of a designated medical gas or medically 
appropriate combination of gases must bear the required information in 
order for sections 503(b)(4) and 502(f) to be deemed to be met for such 
gas or gases. This proposed revision is intended to clarify that the 
warnings, directions, and other information in Sec.  201.161(a) must 
appear in the labeling of the final use container of a designated 
medical gas or medically appropriate combination of designated medical 
gases in order for the requirements of sections 503(b)(4) and 502(f) of 
the FD&C Act to be deemed to be met for such gas or gases, consistent 
with the requirements in section 576(a)(3)(A)(ii) of the FD&C Act.
    In the case of oxygen, FDA proposes to require the final use 
container to bear a warning statement providing the following (Sec.  
201.161(a)(1)(i)):
    <bullet> Uninterrupted use of high concentrations of oxygen over a 
long duration, without monitoring its effect on oxygen content of 
arterial blood, may be harmful;
    <bullet> oxygen should not be used on patients who have stopped 
breathing unless used in conjunction with resuscitative equipment; and
    <bullet> in the case of oxygen that may be provided without a 
prescription for use in the event of depressurization or other 
environmental oxygen deficiency, or for oxygen deficiency or for use in 
emergency resuscitation when administered by properly trained 
personnel, a warning that the oxygen can be used for emergency use only 
when administered by properly trained personnel for oxygen deficiency 
and resuscitation, and that for all other medical applications a 
prescription is required.
    This is the same information currently required in Sec.  
201.161(a)(1)(i) for oxygen. FDA believes this information is important 
to convey the risks of using oxygen and is consistent with the 
requirements in section 576(a)(3)(A)(ii) and (b)(2) of the FD&C Act.
    FDA proposes Sec.  201.161(a)(1)(ii), which would require clear and 
prominent ``no smoking'' and ``no vaping'' warning statements and a 
graphic warning symbol on the label of oxygen final use containers 
indicating that smoking, vaping, and open flames near oxygen are 
dangerous. Such a graphic symbol may be based on those created by 
standards development organizations. FDA is aware of numerous instances 
of fires related to the medical use of oxygen, most often related to 
individuals smoking in the vicinity of an oxygen tank in operation. 
Additionally, FDA has become aware of some reports that vaping products 
\6\ have been linked to medical oxygen fires and explosions (Refs. 3 to 
6). These events can cause death and serious injury to the patient, as 
well as cohabitants, neighbors, and first responders. Oxygen cylinders 
generally contain warnings regarding keeping oil, grease, combustibles, 
heat, sparks, and flame away from the product (though language varies 
from cylinder to cylinder). However, this language is generally in very 
fine print, is not expressed in a manner that is clear to lay users, 
and does not mention smoking or vaping directly. The purpose of this 
proposed provision is to include in product labeling a plain-language 
warning against smoking, vaping, or using open flames near an operating 
oxygen tank. Because many patients on oxygen therapy have smoking-
related illnesses, and because some patients may continue to smoke or 
vape during treatment, FDA believes that the proposed warning will help 
mitigate the risk of fires during the administration of oxygen. The 
proposed ``no smoking'' and ``no vaping'' warning statements and 
graphic symbol may appear on a separate sticker or decal displaying the 
information on the container or be painted directly on the container. 
The Agency will continue to consider other risks of combustion as well.
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    \6\ The term ``vaping products'' includes vapes or vape pens, 
personal vaporizers, e-cigarettes, cigalikes, e-pens, e-hookahs, e-
cigars, e-pipes and other battery-operated tobacco products in 
addition to other non-nicotine vape products.
---------------------------------------------------------------------------

    In the case of all designated medical gases other than oxygen, and 
in the case of medically appropriate combinations of designated medical 
gases, FDA proposes to require the final use container to bear the 
following information (Sec.  201.161(a)(2)(i) and (ii)):
    <bullet> A warning statement providing that the administration of 
the gas or gas combination (as applicable) may be hazardous or 
contraindicated; and
    <bullet> a warning statement providing that the gas or gas 
combination (as applicable) should be used only by or under the 
supervision of a licensed practitioner who is experienced in the use 
and administration of the gas or gas combination (as applicable) and is 
familiar with the indications, effects, dosages, methods, and frequency 
and duration of administration, and with the hazards, 
contraindications, and side effects and the precautions to be taken.
    This is the same information currently required in Sec.  
201.161(a)(1)(ii) for the listed gases other than oxygen, as well

[[Page 31309]]

as for medically appropriate combinations of the listed gases. In 
addition, FDA proposes to require that the labeling on the final use 
container of designated medical gases other than oxygen and medically 
appropriate combinations of designated medical gases bear the symbol 
``Rx only.'' FDA believes this information is important to convey the 
risks of using these gases and is consistent with the requirements in 
section 576(a)(3)(A)(ii) and (b)(1) of the FD&C Act.
    Under proposed Sec.  201.161(a)(3), the labeling on the final use 
container for all designated medical gases and medically appropriate 
combinations thereof would be required to bear appropriate directions 
and warnings concerning storage and handling. FDA believes this 
proposed revision is consistent with the current requirement in Sec.  
201.161(a)(2). The Agency proposes this revision to reflect the 
language in section 576(a)(3)(A)(ii)(III) of the FD&C Act on this 
issue.
    The Agency has received comments recommending that it issue a 
separate warning statement requirement for medical air that states that 
medical air may be used without a prescription for breathing support 
when administered by properly trained personnel. FDA has decided not to 
propose a warning statement for medical air that is different from the 
warning statement proposed for designated medical gases other than 
oxygen, nor does FDA otherwise propose to exercise its authority under 
section 503(b)(3) of the FD&C Act to remove medical air from the 
requirements of section 503(b)(1). In the 2016 final rule entitled 
``Medical Gas Containers and Closures; Current Good Manufacturing 
Practice Requirements,'' FDA responded to comments asserting that 
certain non-prescription uses of medical air are medically appropriate 
by deciding not to finalize its proposal to add medical air to the list 
of gases at Sec.  201.161(a) and stating that it would continue to 
consider what would constitute an appropriate warning statement for 
medical air (81 FR 81685 at 81689; November 18, 2016). Since the 
publication of the 2016 final rule, FDA has continued to consider this 
issue, and the Agency remains unaware of any uses for medical air that 
would be appropriate for nonprescription use, and no new information 
supporting such uses has been provided since the Agency last addressed 
this issue in a citizen petition response to the Compressed Gas 
Association (Ref. 7). FDA believes that medical air intended for use by 
properly trained personnel in a healthcare setting should remain a 
prescription use subject to the requirements of section 503(b)(1) of 
the FD&C Act. The Agency specifically requests comment on this issue.
    Proposed new Sec.  201.161(b) would create separate labeling 
requirements for bulk or transport containers used for designated 
medical gases or medically appropriate combinations of designated 
medical gases. FDA proposes to require that such containers be 
identified with the name of the product contained therein and be 
accompanied by documentation identifying the product as meeting 
applicable compendial standards. As discussed in this section, bulk or 
transport containers are excluded from the proposed definition of final 
use containers. Because these large containers are generally removed 
from the point of care and are not expected to be used directly to 
administer a designated medical gas or medically appropriate 
combination of designated medical gases to a patient, FDA does not 
believe that such containers need to bear the information that would be 
required under proposed Sec.  201.161(a). However, it is essential that 
the identity of the gas or gases inside such containers is evident to 
individuals handling and transporting the containers in order to 
prevent mix-ups. Many firms in the supply chain for medical gases, 
including those firms downstream from the manufacturers that initially 
produce the gas, receive and distribute gases for medical and non-
medical use, and some non-medical gases may not meet compendial 
standards applicable to designated medical gases. Therefore, this 
proposal would require that a bulk or transport container bears the 
name of the designated medical gas or medically appropriate combination 
of designated medical gases contained therein, and that the 
accompanying documentation identifies that the product meets applicable 
compendial standards. These proposed requirements are expected to help 
prevent mix-ups and ensure that recipients of designated medical gases 
or medically appropriate combinations thereof in bulk or transport 
containers are provided information indicating that such gases meet 
applicable compendial standards.
    In Sec.  201.328(a)(1), FDA proposes technical changes to reflect 
that the requirements in Sec.  211.94(e)(2) are proposed to be moved to 
Sec.  213.94(e)(3). See section V.B.1 for more information on this 
proposed revision.
    Proposed new Sec.  201.328(d) would provide that the owner of a 
designated medical gas container or a container of a medically 
appropriate combination of designated medical gases may be identified 
on the container. This statement may appear on a separate sticker or 
decal on the container and need not be contiguous with other labeling 
on the container, but if the container owner is not the manufacturer, 
packer, or distributor of the gas, that shall be clearly stated. FDA 
recognizes the complex distribution system for designated medical gases 
and medically appropriate combinations of designated medical gases and 
the importance of allowing container owners to be clearly identified so 
that patients and healthcare professionals can contact the container 
owners if necessary. This provision is intended to help ensure that 
appropriate entities can be contacted regarding quality issues or 
adverse events. It is additionally intended to facilitate the return of 
cylinders to owners that may not also be medical gas manufacturers. The 
proposed inclusion of the container owner's information would not cause 
the container owner to be a ``relabeler'' for purposes of FDA's 
registration and listing requirements.

B. Proposed Current Good Manufacturing Practice Provisions

    FDA proposes the establishment of part 213, which would contain the 
CGMP requirements for preparation of medical gases, including 
designated medical gases, for administration to humans or animals. If 
finalized as proposed, medical gases proposed to be subject to part 213 
would no longer be subject to part 211. FDA also proposes conforming 
edits to part 210 so that applicable provisions would reflect the new 
CGMP regulations for medical gases in part 213. As proposed, part 213 
would apply to the entity that initially produces a medical gas and 
also to any downstream firms that manufacture, process, pack, or hold 
medical gases, including firms that combine, commingle, refill, or 
distribute designated medical gases and medically appropriate 
combinations thereof. Part 213 is not intended to apply to entities 
further upstream in the supply chain from the entity that initially 
produces a medical gas. FDA seeks comment on the scope of these 
requirements, including the stage of product development at which they 
would apply and the entities that would be subject to the requirements. 
In this section, FDA will first describe proposed revisions to parts 
210 and 211. Then FDA will describe the proposed requirements in part 
213, including how they would differ from the requirements in part 211. 
Lastly, FDA will describe certain groups of CGMP requirements under 
part 211 that FDA is not proposing in part 213.

[[Page 31310]]

1. Proposed Revisions to Parts 210 and 211
    FDA proposes conforming edits to parts 210 and 211 to account for 
the proposed new part 213. In part 210, FDA proposes to add references 
to part 213 in Sec.  210.1(a) and (b) and in Sec.  210.2(a) and (b) so 
that applicable provisions in part 210 would reflect the new CGMP 
regulations for medical gases in part 213.
    In Sec.  211.1(a), FDA proposes to add ``medical gases as defined 
in Sec.  213.3(b)(12)'' to the parenthetical that currently excludes 
positron emission tomography drugs from part 211. Proposed part 213 
would contain the CGMP requirements for medical gases.
    FDA also proposes to delete Sec.  211.94(e). Instead, proposed 
Sec.  213.94 would contain updated requirements for medical gas 
containers and closures that are generally consistent with the current 
requirements in Sec.  211.94(e), with some additional provisions. More 
information is in section V.B.6 of this document.
    FDA proposes to delete the last sentence of Sec.  211.125(c), which 
waives labeling reconciliation requirements for 360[deg] wraparound 
labels on portable cryogenic medical gas containers because labeling 
reconciliation for medical gases would be addressed by proposed Sec.  
213.125(b).
    FDA proposes to delete the reference to ``containers of compressed 
medical oxygen'' in Sec.  211.132(c)(1), which is in a parenthetical 
that excludes certain products from the requirement for each retail 
package of an over-the-counter drug product covered by Sec.  211.132 to 
bear a particular statement regarding its tamper-evident features. This 
reference would no longer be relevant if this proposed rule is 
finalized because medical gases (including compressed medical oxygen) 
would no longer be subject to part 211.
    FDA proposes to delete the statement in Sec.  211.170(b) that 
reserve samples of compressed medical gases need not be retained. Under 
the proposed rule, medical gases would be subject to proposed part 213, 
which would not include reserve sample requirements.
    FDA proposes to delete the exception in Sec.  211.196 that 
distribution records for compressed medical gas products are not 
required to contain lot or control numbers because distribution records 
requirements for medical gases would be addressed by proposed Sec.  
213.196.
2. General Provisions
    Section 213.1 explains the scope of FDA's proposed CGMP 
requirements for medical gases. Proposed part 213 would contain the 
minimum CGMP requirements for preparation of all medical gases for 
administration to humans or animals, including designated medical 
gases, medically appropriate combinations of designated medical gases, 
medical gases that are approved under an application that was submitted 
to FDA under section 505 or 512 of the FD&C Act, and any marketed 
unapproved drugs that are medical gases. Because designated medical 
gases and other kinds of medical gases share many of the same physical 
characteristics and are manufactured, processed, packed, and held using 
similar operations and control strategies, FDA believes that continuing 
to have a single set of CGMP requirements for all medical gases is 
appropriate.
    FDA does not consider the process of mixing or combining gases by a 
hospital or healthcare provider at the point of care and as part of the 
ordinary practice of treating individual patients to be activities 
subject to part 213.
    Part 213 applies to all designated medical gases and medically 
appropriate combinations thereof, regardless of whether they are 
intended for use in humans, animals, or both.
    Proposed Sec.  213.3 includes several definitions that generally 
track those in part 210, some of which have been revised to tailor them 
more specifically to medical gases. Proposed Sec.  213.3 also contains 
new definitions that are relevant to the manufacture, processing, 
packing, and holding of medical gases. Proposed paragraph (a) would 
generally apply the definitions and interpretations in section 201 of 
the FD&C Act to such terms when used in proposed part 213. Proposed 
paragraph (b) contains additional definitions as follows:
    <bullet> The term ``acceptance criteria'' is proposed to be defined 
in Sec.  213.3(b)(1) to mean the product specifications and acceptance/
rejection criteria, such as acceptable quality level and unacceptable 
quality level, with an associated sampling plan, that are necessary for 
making a decision to accept or reject a lot or batch (or any other 
convenient subgroups of manufactured units). This is identical to the 
definition of the same term in part 210. The Agency believes that 
establishing clear product specifications and acceptance/rejection 
criteria for determining whether a lot or batch is acceptable will help 
ensure the identity, strength, quality, and purity of medical gases.
    <bullet> Proposed Sec.  213.3(b)(2) would define the term ``batch'' 
to mean ``a specific quantity of a medical gas or other material that 
is intended to have uniform character and quality, within specified 
limits, and is produced according to a single manufacturing order 
during the same cycle of manufacture.'' This is generally consistent 
with the definition of the same term in part 210. The Agency believes 
this definition would allow for significant flexibility in defining a 
batch to address considerations raised by different types of firms and 
different manufacturing, processing, packing, and holding activities.
    <bullet> The term ``commingling or commingled'' is proposed to be 
defined in Sec.  213.3(b)(3) to refer to the act of combining one lot 
of designated medical gas or component with another lot or lots of the 
same designated medical gas or component. This is primarily intended to 
reflect the industry practice of combining designated medical gases of 
the same identity (e.g., nitrogen and nitrogen) from multiple original 
manufacturers or lots, all of which meet compendial standards. This 
definition would be new in part 213.
    <bullet> In proposed Sec.  213.3(b)(4), the term ``component'' is 
revised. Compared to the definition in Sec.  210.3(b)(2) it means any 
ingredient intended for use in the manufacture of a medical gas, 
including those that may not appear in such gas. The term does not 
include incoming designated medical gases. Different proposed 
requirements in part 213 would apply to components and incoming 
designated medical gases. These proposed requirements are described 
further in section V.B.6 of this proposed rule.
    <bullet> Proposed Sec.  213.3(b)(5) defines the term ``designated 
medical gas.'' This definition refers to the statutory definition found 
in section 575(1) of the FD&C Act and is intended to apply to the gases 
described in section 575(1) of the FD&C Act.
    <bullet> FDA also proposes to add a definition of the term ``FDA'' 
in Sec.  213.3(b)(6) to mean the Food and Drug Administration. This is 
consistent with other Agency regulations that contain a definition of 
FDA.
    <bullet> Proposed Sec.  213.3(b)(7) defines the term ``in-process 
material'' to mean ``any material fabricated, compounded, blended, or 
derived by chemical reaction that is produced for, and used in, the 
preparation of the medical gas.'' This is generally consistent with the 
definition of the same term in part 210.
    <bullet> FDA proposes in Sec.  213.3(b)(8) to define ``incoming 
designated medical gas'' to mean a designated medical gas received from 
one source that is commingled with the same gas from another source, 
used in a medically appropriate combination of designated medical gases 
or in the production of

[[Page 31311]]

another medical gas, or further distributed. This definition is 
intended to cover designated medical gases that downstream entities 
receive from original manufacturers and other sources. However, 
incoming gases that are not designated medical gases but that are 
intended for use in the manufacture of a medical gas would be 
considered components. As described above, FDA proposes different 
requirements for components and incoming designated medical gases. This 
definition would be new in part 213.
    <bullet> In proposed Sec.  213.3(b)(9), the term ``lot'' is defined 
to mean a batch, or a specific identified portion of a batch, having 
uniform character and quality within specified limits. In the case of a 
medical gas produced by continuous process, the term means a specific 
identified amount produced in a unit of time or quantity in a manner 
that assures its having uniform character and quality within specified 
limits. This is generally consistent with the definition of the same 
term in part 210.
    <bullet> FDA proposes to define ``lot number, control number, or 
batch number'' in Sec.  213.3(b)(10) to mean ``any distinctive 
combination of letters, numbers, or symbols, or any combination of 
them, from which the complete history of the manufacture, processing, 
packing, holding, and distribution of a batch or lot of medical gas or 
other material can be determined'' (Sec.  213.3(b)(11)). This is 
generally consistent with the definition of the same term in part 210.
    <bullet> In proposed Sec.  213.3(b)(11), the term ``manufacture, 
processing, packing, or holding'' is defined to include packaging and 
labeling operations, testing, and quality control of medical gases. 
This is generally consistent with the definition of the same term in 
part 210 because many provisions refer to these actions, and FDA 
intends that they have the same meaning as in part 210. FDA considers 
packaging in the context of these proposed requirements to include 
filling a container with a medical gas.
    <bullet> FDA proposes in Sec.  213.3(b)(12) that the term ``medical 
gas'' has the meaning given the term in section 575(2) of the FD&C Act. 
This would include designated medical gases, medically appropriate 
combinations of designated medical gases, medical gases that are 
approved under an application that was submitted to FDA under section 
505 or 512 of the FD&C Act, and any marketed unapproved drugs that are 
medical gases. This term would not include gases that are used as 
excipients in drug products that are not medical gases (e.g., 
propellants in inhalation drugs).
    <bullet> FDA proposes to define ``original manufacturer'' in Sec.  
213.3(b)(13) to include persons or entities that initially produce a 
designated medical gas by chemical reaction, physical separation, 
compression of atmospheric air, purification of a gas, or other means. 
FDA's intent is to capture the various methods by which firms produce 
designated medical gases. A person who refills a designated medical gas 
into a new container, either for further distribution or at the 
delivery site, would not be considered an original manufacturer. 
Additionally, a person who creates a medically appropriate combination 
of designated medical gases would not be considered an original 
manufacturer. This proposed definition would be new in part 213.
    <bullet> FDA's proposed definition of ``quality unit'' in Sec.  
213.3(b)(14) is any person or persons designated with the authority and 
responsibility for overall quality management and other 
responsibilities as defined in Sec.  213.22. Under proposed part 213, 
the quality unit's responsibilities would include oversight of quality 
throughout the entire manufacturing process. We are proposing to use 
the term ``quality unit'' because the Agency believes this term more 
appropriately reflects current terminology. As FDA has previously 
noted, the Agency considers ``quality control unit'' (defined in Sec.  
210.3(b)(15)) and ``quality unit'' to be synonymous. FDA proposes an 
updated definition for part 213 that focuses on ``overall quality 
management'' rather than quality control. The Agency believes that this 
definition would better reflect industry practice and the Agency's 
understanding of the responsibilities of the quality unit.
    <bullet> FDA's proposed definition of ``strength'' in Sec.  
213.3(b)(15) is generally consistent with the definition in part 210, 
and contains two parts: (1) The concentration of the medical gas (for 
example, weight/weight, weight/volume, or unit dose/volume basis), and/
or (2) the potency, that is, the therapeutic activity of the medical 
gas as indicated by appropriate laboratory tests or by adequately 
developed and controlled clinical data (expressed, for example, in 
terms of units by reference to a standard).
    FDA seeks comment on whether there are other terms, including those 
that are used in this proposed rule or in parts 210 and 211, that the 
Agency should define in part 213.
3. Organization and Personnel
    Proposed Sec.  213.22 describes the responsibilities of the quality 
unit and is similar in scope to Sec.  211.22. Proposed paragraphs (a) 
through (d) are generally consistent with paragraphs (a) through (d) in 
Sec.  211.22, with one notable change: FDA proposes to use the term 
``quality unit'' instead of ``quality control unit.'' Paragraph (a) 
would require that there be a quality unit with the responsibility and 
authority to approve or reject all components, medical gas containers 
and closures, in-process materials, packaging material, labeling, and 
medical gases, and the authority to review production records to assure 
that no errors have occurred or, if errors have occurred, that they 
have been fully investigated. Additionally, the quality unit would be 
responsible for approving or rejecting medical gases manufactured, 
processed, packed, or held under contract by another company. The 
Agency believes that assigning dedicated staff to these quality 
responsibilities is critical to ensuring the identity, strength, 
quality, and purity of the medical gas.
    Paragraph (b) would require that there be made available to the 
quality unit adequate laboratory facilities for the testing and 
approval (or rejection) of components, medical gas containers and 
closures, packaging materials, in-process materials, and medical gases. 
The availability of such facilities would help the quality unit perform 
its functions.
    Under paragraph (c), the quality unit would have the responsibility 
for approving or rejecting all procedures or specifications impacting 
on the identity, strength, quality, and purity of the medical gas. The 
Agency believes this provision would provide clarity regarding these 
responsibilities and that the quality unit is best positioned to 
determine whether these procedures and specifications are appropriate.
    Paragraph (d) would state that the responsibilities and procedures 
applicable to the quality unit shall be in writing and shall be 
followed. The Agency believes this would help provide additional 
assurance for reliable continuation of established policies and 
procedures regarding product quality.
    Paragraph (e) would clarify that quality unit personnel may perform 
other functions if there are appropriate written controls in place to 
ensure such other functions are performed separately from quality unit 
responsibilities and such other functions do not interfere with the 
quality unit's responsibilities or subordinate the quality unit's 
responsibilities to any other unit. Small

[[Page 31312]]

firms that manufacture, process, pack, or hold a drug, including 
medical gases, have limited personnel who may have multiple roles 
within the firm. So long as there are appropriate written controls in 
place to ensure that other functions do not interfere with the quality 
unit's responsibilities or subordinate the quality unit's 
responsibilities to any other unit, FDA considers it acceptable for 
quality unit personnel to perform these other functions.
    Proposed Sec.  213.25 addresses personnel qualifications and 
responsibilities. Paragraph (a) would contain requirements for 
personnel education, training, and experience that are generally 
consistent with those contained in Sec.  211.25, except as described 
below. Under proposed Sec.  213.25(a), persons engaged in the 
manufacture, processing, packing, or holding of a medical gas would be 
required to have the education, training, and experience (or any 
combination thereof) to enable them to perform assigned functions. 
Training would have to be in the employee's particular operations and 
in CGMP (including in the applicable CGMP regulations and written 
procedures required thereunder). Training in CGMP would have to be 
conducted by qualified individuals on a continuing basis and with 
sufficient frequency to assure that employees remain familiar with CGMP 
requirements applicable to them. FDA proposes to specify in Sec.  
213.25(a) that written documentation must be maintained demonstrating 
employees' completion of training, including the date, type of 
training, and results of any completion criteria, such as test results. 
The Agency believes that these requirements would be sufficient to 
allow firms to maintain properly trained staff capable of accomplishing 
all required tasks. This paragraph would apply to all personnel engaged 
in the manufacture, processing, packing, or holding of a medical gas, 
including supervisors and subordinates. Therefore, we are not proposing 
a separate requirement similar to Sec.  211.25(b) regarding supervisor 
responsibilities in this proposed rule.
    Paragraph (b) would require that there be an adequate number of 
qualified personnel to perform manufacturing, processing, packing, and 
holding activities for each medical gas. The scope of this proposed 
requirement is the same as in Sec.  211.25(c). This proposed 
requirement is important to ensure that all steps related to 
manufacturing, processing, packing, and holding are performed or 
monitored appropriately. What would constitute ``adequate'' personnel 
would depend in part on the size and complexity of the operations being 
performed.
    Paragraph (c) would restrict access to ``limited-access areas'' to 
authorized personnel only. This proposed requirement is the same as 
Sec.  211.28(c) and is important for medical gases because of the 
danger associated with mishandling medical gases and the risks to 
patients if such gases are improperly manufactured.
    In Sec.  213.34, FDA proposes requirements regarding consultants 
that are generally consistent with requirements that currently apply to 
medical gases under Sec.  211.34. FDA does not see a need for different 
training and experience requirements for consultants advising on 
medical gases compared to other drug products. Consultants would be 
required to have sufficient education, training, and experience, or any 
combination thereof, to advise on the subject for which they are 
retained. Further, records would be required to be maintained that 
state the name, address, and qualifications of any consultants and the 
type of service they provide.
4. Buildings and Facilities
    FDA proposes a more limited set of building and facilities 
requirements for the manufacture, processing, packing, or holding of 
medical gases compared to part 211. FDA's primary concern regarding 
buildings and facilities used for these products is the risk of mix-ups 
because multiple gases are often produced at these buildings and 
facilities, and a gas mix-up could lead to patient harm. Additionally, 
while the risk of contamination is diminished for medical gases because 
they are generally manufactured in a closed, sealed system, periodic 
cleaning and maintenance is necessary for all buildings and facilities, 
so buildings and facilities must be designed to facilitate such 
cleaning and maintenance. The proposed requirements in this subpart are 
intended to address these risks, taking into account the unique 
manufacturing processes for medical gases.
    Proposed Sec.  213.42(a) would require that buildings and 
facilities used in the manufacture, processing, packing, or holding of 
a medical gas be of adequate design, including adequate space, for the 
orderly placement of equipment and materials to prevent mix-ups and 
allow for adequate cleaning, maintenance, and proper operations. 
Specifically, buildings and facilities would be required to be of 
adequate design to prevent mix-ups between components, incoming 
designated medical gases, medical gas containers and closures, 
labeling, in-process materials, or medical gases. FDA proposes to 
specify ``buildings and facilities'' in this section and elsewhere 
because some medical gas operations, including storage, can be 
performed outdoors without affecting the safety, identity, strength, 
quality, and purity of the product. FDA expects that there will be 
multiple ways of achieving adequate design and adequate space for all 
manufacturing operations that prevent mix-ups and allow for necessary 
cleaning and maintenance. Multiple gases are often manufactured at the 
same facility, and a mix-up could result in a patient receiving the 
wrong gas, which could be fatal. Therefore, it is essential that 
buildings and facilities be designed to enable personnel to clearly 
identify which equipment and materials are being used for which gas, to 
avoid such mix-ups. Moreover, while contaminants such as ordinary dust 
and dirt are unlikely to enter a closed system, such contamination can 
still occur, for example, at the point at which a gas is transferred 
from one container to another.
    Proposed Sec.  213.42(b) would require that operations be performed 
within specifically defined areas of adequate size, with separated or 
defined areas or such other control systems for the firm's operations 
as are necessary to prevent contamination or mix-ups during the 
following procedures:
    <bullet> Receipt, identification, storage, and withholding from use 
of components or incoming designated medical gases, medical gas 
containers and closures, and labeling, pending the appropriate 
sampling, testing, or examination by the quality unit before release 
for manufacturing or packaging;
    <bullet> Holding rejected components, incoming designated medical 
gases, medical gas containers and closures, and labeling before 
disposition;
    <bullet> Storage of released components, incoming designated 
medical gases, medical gas containers and closures, and labeling;
    <bullet> Storage of in-process materials;
    <bullet> Manufacturing and processing operations;
    <bullet> Packaging and labeling operations;
    <bullet> Quarantine storage before release of medical gases;
    <bullet> Storage of medical gases after release; and
    <bullet> Control and laboratory operations.
    Where multiple gases are being produced at the same facility, it is 
important for staff to be able to easily determine which gas is being 
manufactured in each area of the facility. These requirements will also 
help personnel distinguish between received, in-process, and finished 
product. FDA anticipates that firms can

[[Page 31313]]

meet this requirement with physical barriers, signage, or both, though 
firms may use other appropriate means. Proposed Sec.  213.42(b) would 
further require that the flow of components, incoming designated 
medical gases, containers, closures, labeling, in-process materials, 
and medical gases be designed to prevent contamination and mix-ups.
    Under proposed Sec.  213.42(c), any building or facility used in 
the manufacture, processing, packing or holding of a medical gas shall 
be maintained in a clean condition so as to assure the safety, 
identity, strength, quality, and purity of the gas. Additionally, Sec.  
213.42(c) would require that written procedures applicable to the 
maintenance and cleaning of buildings and facilities be established and 
followed. FDA believes this proposed requirement is more limited than 
the sanitation requirement in Sec.  211.56(a), and that it is better 
tailored to medical gas production, which involves a generally lower 
risk of contamination than other drug products. The condition of 
buildings and facilities that would be considered clean for medical gas 
production is expected to be different from the condition of buildings 
and facilities that would be considered clean for production of other 
drug products, where greater risks of contamination generally exist.
5. Equipment
    Subpart D contains proposed requirements for equipment. Proposed 
Sec.  213.63 would require that equipment be of appropriate design, 
adequate size, and suitably located to facilitate operations for its 
intended use and for its cleaning and maintenance. FDA expects that the 
design of the facility and equipment will allow for appropriate 
cleaning and maintenance (for example, personnel can access all 
equipment that must be cleaned). FDA expects that firms will ensure 
that pigtails, valves, hoses, and similar connectors are kept clean and 
maintained.
    Proposed Sec.  213.65 addresses equipment construction and is 
similar to Sec.  211.65. Paragraph (a) would require that equipment be 
constructed so that surfaces that contact components, in-process 
materials, or medical gases are not reactive, additive, or absorptive 
so as to alter the safety, identity, strength, quality, or purity of 
the medical gas beyond the official or other established requirements. 
Paragraph (b) would require that substances required for operations, 
such as lubricants or coolants, shall not come into contact with 
components, containers, closures, in-process materials, or medical 
gases so as to alter the safety, identity, strength, quality or purity 
of the medical gas beyond the official or other established 
requirements.
    FDA proposes equipment maintenance and cleaning requirements under 
Sec.  213.67. These proposed requirements differ from those that 
currently apply to medical gases under Sec.  211.67 and reflect the 
differences in appropriate practices for routine cleaning of equipment 
associated with the manufacturing, processing, packing, and holding of 
medical gases. Paragraph (a) would require that written procedures be 
established, maintained, and followed for adequate cleaning and 
maintenance of equipment. Procedures would be required to include the 
following:
    <bullet> Assignment of responsibility for cleaning and maintaining 
equipment;
    <bullet> maintenance and cleaning schedules, including, where 
appropriate, sanitizing schedules;
    <bullet> a sufficiently detailed description of the methods, 
equipment, and materials used in cleaning and maintenance, as well as 
the methods of disassembling and reassembling equipment as necessary to 
assure proper cleaning and maintenance;
    <bullet> removal or obliteration of previous batch identification;
    <bullet> protection of clean equipment from contamination prior to 
use; and
    <bullet> inspection of equipment for cleanliness immediately before 
use.
    FDA anticipates that these procedures would address, among other 
things: Cleaning, or verifying as clean, equipment and product contact 
surfaces prior to initial use, after potential exposure to a 
contaminant, or as part of maintenance if such maintenance may expose 
the product contact surfaces to potential contamination; maintaining 
equipment at appropriate intervals to prevent malfunctions or 
contamination; and inspecting or testing systems prior to returning to 
service, to assure that no residual cleaning agents are present.
    Proposed paragraph (b) specifies that such procedures shall not 
alter the safety, identity, strength, quality, or purity of the medical 
gas beyond established requirements.
    Paragraph (c) would require that records be kept of cleaning, 
maintenance, and inspection as specified in Sec.  213.180.
    Proposed Sec.  213.68 addresses requirements for automatic, 
mechanical, and electronic equipment used in the manufacture of medical 
gases. Paragraph (a) would require that such automatic, mechanical, and 
electronic equipment be routinely calibrated, inspected, and checked, 
according to a written program designed to ensure proper performance, 
and that written procedures and records of calibration, inspections, 
and checks be maintained. Ensuring that automated, mechanical, and 
electronic equipment is properly functioning is critical to ensuring 
the safety, strength, identity, quality, and purity of a gas. Without 
such checks, firms could manufacture gases that fail to meet compendial 
standards, or that are not appropriate for the ultimate patients' 
needs.
    Paragraph (b) would require validation of computerized systems that 
record, store, or use data. The validation necessary would depend on 
how the computerized system is used in the manufacturing process.
    In paragraph (c), FDA would require the maintenance of backup files 
of data entered into computer systems, though such backups would not be 
required where certain data, such as calculations, are eliminated by 
computerization or other automated processes.
    Paragraph (d) would require that appropriate change control be used 
whenever modifications are made to computerized systems to assure that 
any changes do not adversely affect data integrity or product quality. 
FDA expects that this will include that manufacturers evaluate proposed 
changes with affected departments, that the proposed changes are 
assessed for revalidation where appropriate, and that activities are 
documented. Records would also be required to be maintained of such 
modifications.
6. Control of Incoming Designated Medical Gas, Components, and Medical 
Gas Containers and Closures
    Subpart E contains proposed requirements for control of incoming 
designated medical gases, components, and medical gas containers and 
closures. Proposed Sec.  213.80(a) and (b) are similar to paragraphs 
(a) and (b) of Sec.  211.80, though the proposed requirements would 
also apply expressly to incoming designated medical gases. Paragraph 
(a) would require sufficiently detailed written procedures to be 
developed and followed describing the receipt, identification, storage, 
handling, sampling, testing, and approval or rejection of components, 
incoming designated medical gases, and medical gas containers and 
closures. Paragraph (b) would require that components, incoming 
designated medical gases, and medical gas containers and closures be 
handled and stored in a manner to prevent contamination and mix-ups. As 
previously mentioned, medical gases are

[[Page 31314]]

generally manufactured in a closed, pressurized system, and gas mix-ups 
generally pose a more significant risk than contamination, considering 
previous incidents in which patients were administered the wrong gas 
(Ref. 8). However, while contamination poses a lower risk, there still 
exists the possibility for contamination. FDA believes that different 
controls would likely be appropriate for medical gas manufacturers to 
prevent contamination than would be expected for producers of other 
drugs.
    Proposed paragraph (c) would require that lots of incoming 
designated medical gases or components be assigned a unique 
identification number, regardless of whether the incoming lot is used 
directly as supply or commingled with an existing supply. This would 
help facilitate the tracing of product once it enters distribution.
    FDA is not proposing that part 213 include the requirements 
described in paragraphs (c) and (d) in Sec.  211.80. FDA believes it is 
unnecessary to include the requirement in Sec.  211.80(c) that product 
be stored off the floor and suitably spaced to permit cleaning and 
inspection. Sealed medical gas containers are designed to protect gases 
from contamination and external conditions, and their size and weight 
make storage off the floor impracticable in many settings. FDA also is 
not proposing to include in part 213 the requirement in Sec.  211.80(d) 
that each container or grouping of containers for components or drug 
product containers, or closures be identified with a distinctive code 
for each lot in each shipment received. Gas containers are reused, and 
inspection of containers prior to reuse would be required under 
proposed Sec.  213.84(a). Thus, FDA believes that other lot 
identification requirements in proposed part 213 are sufficient to 
track product.
    Proposed Sec.  213.82 addresses the receipt and storage of incoming 
designated medical gases. The proposed requirements differ from 
currently applicable requirements in Sec.  211.82 to better reflect the 
use of incoming designated medical gases in further manufacturing. 
Under proposed paragraph (a), a firm would have to verify and record 
upon receipt of a designated medical gas that the shipment contains a 
signed certificate of analysis (COA) from the supplier, and that the 
COA contains the following:
    <bullet> The supplier's name;
    <bullet> the name of the incoming designated medical gas;
    <bullet> the lot number or another unique identification number;
    <bullet> the actual analytical result obtained for strength, as 
well as the results of other tests performed (FDA expects these tests 
would include tests sufficient to demonstrate conformance with 
compendial standards);
    <bullet> identification of the test method(s) used for analysis;
    <bullet> the NDA and/or NADA number of the incoming designated 
medical gas; and
    <bullet> the supplier representative's signature and the date of 
signature.
    If the incoming designated medical gas is obtained from a supplier 
other than the original manufacturer, the shipment would also have to 
include complete information from the original manufacturer's COA. The 
firm would also be required to establish and maintain a program to 
ensure the reliability of the supplier's capabilities through 
appropriate assessment and testing procedures. This is essential to 
ensuring that the information in the COA is accurate, and thus that the 
incoming designated medical gas meets relevant standards.
    Proposed paragraph (b) would require that an identity test be 
conducted on incoming designated medical gases upon receipt. FDA 
understands that this is consistent with current industry practice 
(Ref. 2), and because designated medical gas manufacturers supplying 
the gas will conduct full compendial testing, and the firm receiving 
the incoming designated medical gas would conduct full compendial 
testing prior to release (see proposed Sec.  213.165), FDA believes 
this is an appropriate level of review.
    FDA proposes Sec.  213.84 regarding testing and approval or 
rejection of components, containers, and closures. Paragraph (a) would 
require that components, containers, and closures (including valves) be 
examined for conformance with appropriate written procedures and 
specifications, and approved or rejected, prior to the manufacturing or 
filling process. Firms can meet this proposed requirement by testing 
for conformance with written specifications. In lieu of such 
examination by the firm, a statement of verification that the 
component, container, or closure meets specifications may be accepted 
from the supplier, provided that the firm establishes and maintains a 
program to ensure the reliability of the supplier's capabilities 
through appropriate assessment and testing provisions. This requirement 
would be satisfied with an auditing system. This type of evaluation 
system is intended to ensure the integrity of components, containers, 
and closures for the entire period of use. Rejected items would need to 
be handled in accordance with Sec.  213.89.
    Under proposed paragraph (b), firms would be required to take 
appropriate actions to protect against container and closure leaks. 
This would include performing leak tests on containers and closures at 
the time of fill and after fill but prior to release. FDA has evaluated 
inspectional findings from 2003 to 2021 and identified numerous 
instances of leaking or empty containers reported by customers and 
patients, following release by the manufacturer (Ref. 9). Because of 
the location and delayed timing of these defects, it appears some are 
likely not detectable prior to release. Therefore, additional controls 
may be needed to further protect against container and closure leaks to 
provide sufficient assurance of the durability of the container closure 
system throughout its period of use. For example, the inclusion of 
representative leak tests at additional intervals, such as upon pick-up 
or receipt of the container by the manufacturer, may be an additional 
adequate control. FDA seeks comment, with related data and explanation, 
from manufacturers, distributors, and end users of medical gases and 
other interested parties on whether leak testing at the time of fill 
and after fill but prior to release would sufficiently ensure the 
integrity of the container closure system for the period of use, and 
whether additional periodic leak tests would enhance the ability to 
correct and prevent container closure defects that are only detectable 
after they leave the manufacturer.
    Proposed paragraph (c) would require that components be sampled, 
tested, and approved or rejected as appropriate prior to use. Firms 
would be able to meet this proposed requirement by performing testing 
for conformance with written specifications or by an identity test on 
the component accompanied by an acceptable COA from the supplier, 
provided that the firm establishes and maintains a program to ensure 
the reliability of the supplier's capabilities through appropriate 
assessment and testing procedures. Components are not always used in 
the manufacture of designated medical gases, but when they are used, 
FDA believes these proposed requirements are reasonable.
    Proposed Sec.  213.89 is similar to the requirements in Sec.  
211.89 in that rejected components, containers, and closures would need 
to be identified and controlled under a quarantine system designed to 
prevent their use in manufacturing or processing operations for which 
they are unsuitable, but proposed Sec.  213.89 would also apply to 
incoming designated medical gases.

[[Page 31315]]

Such a quarantine system need not include physical quarantining, as 
other methods can adequately ensure that unsuitable products are not 
used. FDA proposes to add a requirement that rejected components, 
incoming designated medical gases, and medical gas containers and 
closures be documented and assessed. This additional proposed 
requirement would help to ensure that any trends that warrant further 
investigation can be identified.
    Proposed Sec.  213.94 would contain additional requirements for 
medical gas containers and closures. Paragraph (a) is generally 
consistent with the requirements in Sec.  211.94(a) and would require 
that containers and closures not be reactive, additive, or absorptive 
so as to alter the safety, identity, strength, quality, or purity of 
the medical gas beyond the official or established requirements.
    Under paragraph (b), container closure systems would be required to 
provide adequate protection against foreseeable external factors in 
storage and use that can cause deterioration or contamination of the 
medical gas. This is generally consistent with the requirements in 
Sec.  211.94(b).
    Paragraph (c) would require that medical gas containers and 
closures be clean to assure that they are suitable for their intended 
use. This is generally consistent with Sec.  211.94(c), but FDA does 
not propose to include the requirements related to sterilization or 
removal of pyrogenic properties, as those are not relevant to medical 
gases.
    Under proposed paragraph (d), standards or specifications, methods 
of testing, and, where indicated, methods of cleaning shall be written 
and followed for medical gas containers and closures. This is generally 
consistent with Sec.  211.94(d), but FDA does not propose to include 
the requirements related to sterilization or removal of pyrogenic 
properties, as those are not relevant to medical gases.
    Proposed paragraph (e) is a revised version of Sec.  211.94(e) and 
would contain requirements for medical gas containers and closures. In 
paragraph (e)(1), FDA proposes that portable cryogenic medical gas 
containers that are not manufactured with permanent gas use outlet 
connections (e.g., those that have been silver-brazed) must have gas-
specific use outlet connections that are attached to the valve body so 
that they cannot be readily removed or replaced (without making the 
valve inoperable and preventing the container's use) except by the 
manufacturer. Proposed Sec.  213.94(e)(1) is consistent with Sec.  
211.94(e)(1). Consistent with Sec.  211.94(e)(1), FDA proposes to 
define ``manufacturer'' for purposes of Sec.  213.94(e)(1) to include 
any individual or firm that fills high-pressure medical gas cylinders 
or cryogenic medical gas containers. The Agency believes only such 
manufacturers should be able to remove or replace gas-specific use 
outlet connections that are attached to the valve body. Also, 
consistent with Sec.  211.94(e)(1), FDA proposes to define ``portable 
cryogenic medical gas container'' for purposes of Sec.  213.94(e)(1) as 
one that is capable of being transported and is intended to be attached 
to a medical gas supply system within a hospital, healthcare entity, 
nursing home, other facility, or home healthcare setting, or is a base 
unit used to fill small cryogenic gas containers for use by individual 
patients. The term would not include cryogenic containers that are not 
designed to be connected to a medical gas supply system, e.g., tank 
trucks, trailers, rail cars, or small cryogenic gas containers for use 
by individual patients (including portable liquid oxygen units as 
defined at Sec.  868.5655). The Agency believes all portable cryogenic 
medical gas containers should have gas-specific use outlet connections 
that are attached to the valve body in order to prevent gas mix-ups. 
FDA seeks comment regarding whether the scope of the exception to the 
term ``portable cryogenic medical gas container'' is appropriate, 
especially as the exception would include small cryogenic containers 
for use by individual patients.
    Under paragraph (e)(2), FDA proposes to add the requirement that 
portable cryogenic medical gas containers as defined in proposed Sec.  
213.94(e)(1) as well as small cryogenic gas containers for use by 
individual patients (including portable liquid oxygen units as defined 
in Sec.  868.5655) have a working gauge sufficient to indicate whether 
the container has an adequate supply of medical gas for continued use. 
This is intended to enable end users, such as healthcare practitioners, 
patients, and caretakers, to monitor the gas remaining in the 
container. Without such a gauge, end users may not be able to determine 
when the container needs to be refilled or replaced. Additionally, if a 
container is stored for a long period of time before use and, during 
that time, slowly vents or leaks, the end user will be able to 
determine with a working gauge whether there is still gas in the 
container. FDA believes that the term ``working gauge'' would allow for 
flexibility, so that firms may use the type of gauge appropriate to 
measure the remaining volume or weight of medical gas, in liquid or 
gaseous form, as appropriate. FDA believes that the proposed 
requirement to have a working gauge would help to assure the safety, 
identity, strength, quality, and purity of medical gases in portable 
cryogenic containers and small cryogenic containers for use by 
individual patients throughout their period of use.
    Paragraph (e)(3) would contain the label and coloring requirements 
that currently apply to medical gases under Sec.  211.94(e)(2), except 
that it would not include the requirement that the labeling not be 
susceptible to becoming worn or inadvertently detached during normal 
use. Because medical gas containers are reused and distributed among 
multiple entities, FDA believes that labeling inspection requirements 
proposed in this rulemaking would be sufficient to assure that labeling 
that enters into distribution is complete, accurate, durable, and 
readable, and that unsuitable labeling is replaced.
7. Production and Process Controls
    Subpart F contains FDA's proposed requirements for production and 
process controls for medical gases. The proposed requirements in Sec.  
213.100(a) and (b) are generally consistent with the currently 
applicable requirements in Sec.  211.100. Proposed paragraph (a) would 
require written procedures for production and process controls designed 
to assure that medical gases have the identity, strength, quality, and 
purity they purport or are represented to have. The procedures would 
need to include all requirements in subpart F. Further, the procedures, 
including any changes, would need to be drafted, reviewed, and approved 
by the appropriate organizational units and reviewed and approved by 
the quality unit. Paragraph (b) would require that written production 
and process control procedures be followed in the execution of the 
various production and process control functions and documented at the 
time of performance, and that deviations be recorded and justified. FDA 
believes that the existing requirements for developing and following 
written procedures for production and process controls are appropriate 
for medical gases because they would help ensure consistent compliance 
with a firm's established procedures for production of medical gases.
    In Sec.  213.101, FDA proposes different requirements for charge-in 
of components and incoming designated medical gases than those in Sec.  
211.101. Proposed paragraph (a) would require that, except when a 
monograph or

[[Page 31316]]

formulary specifies a range, the batch be formulated with the intent to 
provide 100 percent of the labeled or established amount of each 
medical gas. Where a monograph or formulary specifies a range for the 
contents of a medical gas, the medical gas would be required to be 
formulated with the intent to provide an amount within that specified 
range. Because medical gases are often manufactured continuously in a 
closed system, weighing, measuring, and subdividing components is 
generally not performed. Paragraph (b) would require that components 
and incoming designated medical gases added to in-process supply or 
final product containers be weighed or measured as appropriate. Final 
product and in-process supply containers would also be required to 
identify the name of the component or designated medical gas or the 
name and percentage of each component or designated medical gas if they 
contain multiple components or designated medical gases, as well as the 
unique lot number assigned.
    Proposed Sec.  213.110 would include a more limited set of sampling 
and testing requirements than the existing requirements in Sec.  
211.110, which contain several testing requirements that are 
inapplicable to medical gases (including tablet or capsule weight 
variation, disintegration time, and dissolution time and rate). 
Paragraph (a) would require that in-process materials be tested for 
identity, strength, quality, and purity as appropriate, and approved or 
rejected by the quality unit during the production process. Under 
paragraph (b), written procedures would be required to be established 
and followed describing the in-process controls, and tests, or 
examinations to be conducted on appropriate samples of in-process 
materials of each batch. Such control procedures would need to be 
established to monitor the output and to validate the performance of 
those manufacturing processes. This is important for assuring batch 
uniformity and the integrity of drug products. Paragraph (c) would 
require that rejected in-process materials be identified and controlled 
under a quarantine system designed to prevent their use in 
manufacturing or processing operations for which they are unsuitable. 
FDA believes that these proposed requirements would be sufficient to 
help ensure that medical gases are manufactured according to 
specifications and prevent mix-ups or the accidental use of rejected or 
quarantined product.
8. Packaging and Labeling Control
    Proposed subpart G would contain packaging and labeling control 
requirements. FDA proposes packaging and labeling materials examination 
and usage criteria in Sec.  213.122. The proposed requirements in 
paragraphs (a) through (e) are generally consistent with the current 
requirements in paragraphs (a) through (e) in Sec.  211.122. Paragraph 
(a) would require that there be sufficiently detailed written 
procedures describing the receipt, identification, storage, handling, 
sampling, examination and/or testing of labeling and packaging 
materials and that such procedures be followed. Further, paragraph (a) 
would require that labeling and packaging materials be representatively 
sampled, and examined or tested upon receipt and before use in 
packaging or labeling of a medical gas. Paragraph (b) would state that 
labeling or packaging materials may be approved and released for use if 
they meet appropriate written specifications, and that they must be 
rejected if they do not meet such specifications to prevent their use 
in operations for which they are unsuitable. Paragraph (c) would 
require that records be maintained for each shipment of each different 
labeling and packaging material indicating receipt, examination, and 
whether the materials were accepted or rejected. Paragraph (d) would 
require that labels and other labeling materials for each different 
medical gas, strength, or quantity of contents be stored with suitable 
identification to avoid mix-ups. Further, access to storage would need 
to be limited to authorized personnel. Paragraph (e) would require the 
destruction of obsolete and outdated materials, as well as materials 
that do not meet applicable requirements.
    Under paragraph (f), FDA would require one of three special control 
procedures for packaging and labeling operations: Dedicated labeling 
and packaging lines for each strength of each medical gas; use of 
appropriate electronic or electromechanical equipment to conduct a 100 
percent examination for correct labeling during or after completion of 
finishing operations; or use of visual inspection to conduct a 100 
percent examination for correct labeling during or after completion of 
labeling operations for hand-applied labeling (which would need to be 
performed by one person and independently verified by a second person). 
The Agency believes that utilizing one of these procedures is critical 
to preventing mix-ups. Paragraph (g) would require monitoring of 
printing devices on, or associated with, manufacturing lines used to 
imprint labeling upon the unit label or case to assure that all 
imprinting conforms to the print specified in the batch production 
record. Finally, paragraph (h) would allow the reuse of labels if they 
are legible, properly affixed to the container, and otherwise meet all 
applicable requirements. Unlike most drug containers, medical gas 
containers are reused many times and made of extremely durable 
materials. FDA believes that the proposed requirements in this section 
would be sufficient to ensure the quality and legibility of medical gas 
labels.
    In proposed Sec.  213.125, FDA would establish requirements for 
issuing labeling. Paragraph (a) would require that labeling and 
packaging operations be controlled to prevent labeling and product mix-
ups, and that procedures be written and followed describing in 
sufficient detail the control procedures employed for the issuance of 
labeling. Proposed paragraph (b) would require use of procedures to 
reconcile the quantities of labeling issued, used, and returned, and 
would require evaluation of discrepancies found between the quantity of 
medical gas and the quantity of labeling issued when such discrepancies 
are outside narrow preset limits based on historical operating data. 
Such discrepancies would need to be investigated in accordance with 
proposed Sec.  213.192.
    Labeling reconciliation is proposed to be waived for cut or roll 
labeling if a 100 percent examination for correct labeling is performed 
in accordance with proposed Sec.  213.122(f)(2) (100 percent electronic 
or electromechanical examination of labeling). Labeling reconciliation 
would also be waived for 360[deg] wraparound labels on portable 
cryogenic medical gas containers. FDA is proposing to retain the label 
reconciliation requirement for medical gases except in the 
circumstances in which it would be waived, consistent with Sec.  
211.125, because label reuse may introduce risk into the labeling 
process that would not be present with unlabeled containers. While 
reuse of cylinder labels and 100 percent verification of hand-applied 
labels on medical gas cylinders through visual inspection provides some 
assurance of correct labeling, such examination does not preclude the 
need for quality assurance steps, such as label reconciliation, to be 
built into the labeling process. The periodic replacement of cylinder 
labels that are worn, damaged or missing introduces variability and 
subjectivity into the determination of which and how many containers 
need new labels, potentially

[[Page 31317]]

increasing the risk of mislabeling. The Agency considers label 
reconciliation procedures, designed commensurate with the risk, to be 
essential to the overall control of labels to minimize the potential 
for mix-ups.
    Paragraph (c) would require that excess lot number stickers or 
decals bearing lot or control numbers be discarded. FDA expects that 
this will help prevent product mix-ups or the inclusion of incorrect 
lot information on a gas container. Finally, paragraph (d) would exempt 
bulk or transport containers (as defined in proposed Sec.  
201.161(c)(3)) from Sec.  213.125. FDA believes that it is not 
necessary for this provision to apply to bulk or transport containers 
because end users are generally not expected to handle or use these 
containers to directly administer the gas to patients.
    Proposed Sec.  213.130 would require that written procedures be 
developed and followed to assure that the correct labels, labeling, and 
packaging materials are used for medical gases, similar to the 
requirements in Sec.  211.130. These procedures would be required to 
incorporate the following features. Paragraph (a) would require 
physical or spatial separation from operations on other products. FDA 
expects this proposed requirement would help to prevent mix-ups. 
Additionally, FDA proposes to use the term ``other products'' because 
some firms that manufacture medical gases may also manufacture gases 
for non-medical purposes, such as for industrial use. Paragraph (b) 
would require that filled, unlabeled containers of medical gases that 
are set aside be identified and handled for future labeling operations 
to preclude mislabeling of individual containers, lots, or portions of 
lots. It would not be necessary to apply identification directly to 
each individual container, but the firm would need to be able to 
identify the name, strength, quantity of contents, and lot or control 
number of such containers. For example, this could be done through 
signage in the area in which the containers are stored.
    FDA proposes in paragraph (c) that the medical gas be identified 
with a lot or control number that permits determination of the history 
of the manufacture and control of the batch. The lot or control number 
of the medical gas could be identified by use of a separate 
identification sticker or decal and would not need to be contiguous 
with other labeling information. Paragraph (d) would require, like the 
existing requirement in Sec.  211.130(d), that packaging and labeling 
materials be examined for suitability and correctness before packaging 
operations, and that such examination be documented in the batch 
production record. FDA proposes to add a provision allowing product 
labels, including 360[deg] wraparound labels, to be reused if they meet 
all applicable labeling requirements, all information on the label is 
legible, and the label is in good condition.
    Paragraph (e) proposes the same requirements as those that 
currently apply under existing Sec.  211.130(e). Under this proposal, 
firms would be required to inspect packaging and labeling facilities 
immediately before use to assure that all medical gases have been 
removed from previous operations. Moreover, this proposal would require 
inspection to assure that packaging and labeling materials unsuitable 
for subsequent operations have been removed, and the results of such 
inspection have been documented in the batch production records.
    FDA proposes paragraph (f), which would exempt bulk or transport 
containers (as defined in proposed Sec.  201.161(c)(3)) from the 
requirements of Sec.  213.130, provided they are identified with the 
name of the product contained therein and accompanied by documentation 
identifying the product as meeting applicable compendial standards. It 
is unnecessary for bulk and transport containers to bear the 
information required by this section because patients and healthcare 
providers are not expected to utilize them directly to administer a 
gas.
9. Holding and Distribution
    Subpart H would establish holding and distribution requirements. 
Proposed Sec.  213.150 would contain requirements for warehousing and 
distribution procedures. Paragraph (a) would require that written 
procedures be established and followed describing the distribution of 
medical gases. Such procedures would be required to include a system by 
which the distribution of each lot can be readily determined to 
facilitate any necessary recalls. FDA believes that the requirement in 
Sec.  211.150(a) to distribute the oldest approved stock of a drug 
product first (often called the ``first-in, first-out'' requirement) is 
unnecessary to include in this proposed rule, as medical gases are 
generally not expected to expire or degrade under ordinary storage 
conditions. Paragraph (b) would require that written procedures be 
established and followed regarding warehousing of medical gases, 
similar to the requirements in Sec.  211.142(a). These procedures would 
be required to include procedures for the quarantine of such gases 
before release by the quality unit. Unlike the current requirements in 
Sec.  211.142(b), the proposed requirements would not include 
procedures regarding the conditions of drug storage because sealed, 
closed containers are generally expected to protect the gas inside from 
a wide range of environmental conditions. Moreover, the Agency believes 
the requirements in proposed Sec. Sec.  213.42 and 213.80 would 
sufficiently address storage and handling.
10. Laboratory Controls
    Subpart I proposes requirements for laboratory controls. In 
proposed Sec.  213.160, FDA would incorporate the existing requirements 
in Sec.  211.160, with one difference in Sec.  213.160(b)(4). Proposed 
paragraph (a) would require that the establishment of any 
specifications, standards, sampling plans, test procedures, or other 
laboratory control mechanisms required by subpart I, including any 
changes, be drafted by the appropriate organizational unit and reviewed 
and approved by the quality unit. Such requirements would have to be 
followed and documented at the time of performance, and deviations 
recorded and justified.
    Under proposed paragraph (b), laboratory controls would be required 
to include the establishment of scientifically sound and appropriate 
specifications, standards, sampling plans, and test procedures designed 
to assure that components, medical gas containers, closures, in-process 
materials, labeling, and medical gases conform to appropriate standards 
of identity, strength, quality, and purity, and include the following 
four elements:
    <bullet> Determination of conformity to applicable written 
specifications for the acceptance of each lot within each shipment of 
components, medical gas containers and closures, and labeling used in 
the manufacture, processing, packing, or holding of a medical gas. The 
specifications would be required to include a description of the 
sampling and testing procedures used. Samples would need to be 
representative and adequately identified. Such procedures would also 
need to require appropriate retesting of any component, medical gas 
container, or closure that is subject to deterioration. See Sec.  
213.160(b)(1).
    <bullet> Determination of conformance to written specifications and 
a description of sampling and testing procedures for in-process 
materials. Such samples would need to be representative and properly 
identified. See Sec.  213.160(b)(2).
    <bullet> Determination of conformance to written descriptions of 
sampling procedures and appropriate

[[Page 31318]]

specifications for medical gases. Such samples would need to be 
representative and properly identified. See Sec.  213.160(b)(3).
    <bullet> The calibration of instruments, apparatus, gauges, and 
recording devices at suitable intervals in accordance with an 
established written program containing specific directions, schedules, 
limits for accuracy and precision, and provisions for remedial action 
in the event accuracy and/or precision limits are not met, or 
verification of such calibration. Instruments, apparatus, gauges, and 
recording devices not meeting established specifications would not be 
able to be used. See Sec.  213.160(b)(4). This differs from Sec.  
211.160(b)(4) in that FDA proposes to require calibration or 
verification of calibration of instruments, apparatus, gauges, and 
recording devices. In the medical gas industry, some downstream 
entities may not conduct their own calibration. FDA believes that 
verification of calibration is necessary if the entity does not conduct 
its own calibration.
    Proposed Sec.  213.165 would contain requirements for testing and 
release of medical gases for distribution. Paragraph (a) would require 
that there be appropriate laboratory determination of satisfactory 
conformance to final specifications for each batch, including the 
identity and strength, prior to release. The Agency omitted the 
requirements in Sec.  211.165(b) from its proposal because generally 
there is less risk of microbial contamination for medical gases.
    Section 213.165(b) would require that any sampling and testing 
plans be described in written procedures, and that such written 
procedures be followed. Such plans would need to include the method of 
sampling, the number of units per batch, and acceptance criteria. FDA 
believes it is unnecessary to incorporate in proposed Sec.  213.165(b) 
the more detailed requirements regarding acceptance criteria described 
in Sec.  211.165(d).
    Proposed Sec.  213.165(c) would require that the accuracy, 
sensitivity, specificity, and reproducibility of test methods employed 
by the firm be validated and documented. This may be done in accordance 
with proposed Sec.  213.194(a)(2). Further, the suitability of all 
testing methods would need to be verified under actual conditions of 
use.
    FDA proposes Sec.  213.165(d), which would require rejection of 
medical gases that fail to meet established standards or specifications 
and any other relevant quality criteria. This proposal is generally 
consistent with the requirements described in Sec.  211.165(f), but FDA 
is not proposing to include the provision stating that reprocessing may 
be performed or the requirements for using reprocessed material. The 
Agency is not aware of reprocessing that occurs for medical gases. 
However, we welcome comment on this issue, including any example 
scenarios in which such gases are reprocessed.
    Finally, FDA would clarify in Sec.  213.165(e) that the proposed 
requirements in Sec.  213.165 would not apply to the filling of a 
designated medical gas or medically appropriate combination via liquid 
to liquid into a container at a delivery site, often referred to by 
industry as ``curbside filling.'' Because such filling operations are 
not expected to result in any material change in the gas being filled 
(for example, oxygen continues to be oxygen after filling), the gas is 
not expected to fall out of conformance with the requirements in Sec.  
213.165 if it is in conformance earlier in the distribution chain and 
stored under proper conditions.
    FDA proposes in Sec.  213.166 stability testing and expiration 
dating requirements for medical gases marketed under applications 
submitted under section 505 or 512 of the FD&C Act. Under proposed 
paragraph (a), any stability testing performed and any expiration date 
established for medical gases marketed under applications submitted 
under section 505 or 512 of the FD&C Act would need to be in accordance 
with the proposed requirements described in subsection (b), subject to 
the conditions established in their approved applications, if any. 
Under this proposed rule, stability testing and expiration dating would 
not be required for all medical gases. However, stability testing, 
expiration dating, or both would be required for some medical gases 
(for example, these would be necessary when required by an approved 
application for the safe and effective use of the drug, or stability 
testing would be necessary when an applicant chooses to label its 
product with an expiration date regardless of whether one is needed for 
safe and effective use under an approved application). FDA believes 
that this proposed requirement would allow for flexibility in 
determining whether stability testing, expiration dating, or both are 
necessary for a particular gas. Furthermore, specific stability testing 
requirements may vary depending on the particular gas.
    Proposed paragraph (b) would contain requirements to assure that 
the medical gas meets applicable standards of identity, strength, 
quality, and purity at the time of use:
    <bullet> The stability testing program would need to be designed to 
assess the stability characteristics of the medical gas and its 
container closure system. The results of stability testing would need 
to be used in determining appropriate storage conditions and any 
expiration dates included on the label. The stability program shall 
include the appropriate sample size, test intervals, container closure 
systems, and storage conditions for samples retained for testing.
    <bullet> Any expiration dates included on the label would be 
required to appear in accordance with Sec.  201.17.
    <bullet> Stability would need to be evaluated periodically to 
ensure that the medical gas continues to meet the standards for 
identity, strength, quality, and purity stated on the labeling to 
support the expiration date.
    FDA is not proposing stability testing or expiration dating 
requirements for designated medical gases, as they are not expected to 
expire or degrade. Additionally, the proposed leak testing and working 
gauge requirements in this proposed rule are expected to address 
concerns regarding the container closure system's ability to prevent 
leakage. If a designated medical gas manufacturer chooses to include an 
expiration date on its container, FDA expects that such a date would be 
determined by appropriate stability testing that reflects the stability 
of the gas and the integrity of the container closure system.
11. Records
    Proposed subpart J would contain requirements for records. Because 
FDA is not proposing to require the labeling of medical gases to bear 
expiration dates, except as proposed in Sec.  213.166, the proposed 
requirements in Sec.  213.180 differ from the requirements in Sec.  
211.180. Paragraph (a) would provide that all records that would be 
required under part 213, or copies of such records, be readily 
available for authorized inspection during the retention period and are 
subject to copying as part of such an inspection. The records would be 
able to be kept at either the establishment where the activities 
described in such records occurred or at another location from which 
the records can be immediately retrieved. Retrieval via computer or 
other electronic means would meet this requirement. Per paragraph (b), 
all records would have to be legible, stored to prevent deterioration 
or loss, and either original or accurate reproductions of original 
records. Paragraph (c) would require that all records that would be 
required to be maintained in compliance with part 213 be maintained

[[Page 31319]]

for at least 3 years from the date the batch of medical gas is 
distributed, except where otherwise provided. This timeframe is the 
same as that used in Sec.  211.180(a) for over-the-counter drugs 
lacking expiration dating.
    Paragraph (d) would require that written records required under 
part 213 be maintained so that their data can be used for evaluating, 
at least annually, the quality standards of each medical gas to 
determine the need for changes in specifications or manufacturing or 
control procedures. Written procedures would also have to be 
established and followed for such evaluations. The procedures would 
also be required to include provisions for a review of a representative 
number of batches, whether approved or rejected, and, where applicable, 
records associated with the batch, and a review of complaints, recalls, 
returned or salvaged medical gases, and investigations conducted under 
Sec.  213.192 for each gas. Under paragraph (e), firms would be 
required to develop written procedures for notifying responsible firm 
officials of any recalls, reports of inspectional observations by FDA, 
regulatory actions related to good manufacturing practice taken by FDA, 
or any investigations resulting from adverse event complaints.
    Proposed Sec.  213.182 would require that there be a written record 
of major equipment cleaning, maintenance (except routine maintenance 
such as lubrication and adjustments), and use. These records would be 
required, as part of individual equipment logs, to show the date, time, 
product, and lot number of each batch processed. Individual equipment 
logs would not be required for equipment dedicated to one product, but 
lots or batches would have to follow in numerical order and be 
manufactured in numerical sequence in such a case. Also, where 
dedicated equipment is employed, the records of cleaning, maintenance, 
and use would be required to be part of the batch record. The 
individuals performing and double-checking the cleaning and maintenance 
(or, if the cleaning and maintenance is performed using automated 
equipment under Sec.  213.68, just the person verifying such cleaning 
and maintenance) would have to date and sign or initial the log 
indicating the work was performed. Entries in the log would be required 
to be in chronological order. While FDA recognizes that cleaning of a 
closed, pressurized system is not always appropriate, when it is 
applicable, it is essential to maintain adequate records of such 
cleaning.
    FDA proposes in Sec.  213.184 a more limited set of recordkeeping 
requirements for components, medical gas containers and closures, and 
labeling than those described in Sec.  211.184. The records would 
include the results of any test or examination performed (including 
those performed pursuant to Sec. Sec.  213.84 and 213.122) and the 
conclusions derived from the test or examination; documentation of the 
examination and review of labels and labeling for conformity with 
established specifications in accordance with Sec. Sec.  213.122 and 
213.130; and the disposition of rejected components, containers, 
closures, and labeling. Medical gas containers are generally reused 
many times before they are taken out of service. FDA believes that the 
proposed requirements in Sec. Sec.  213.84, 213.122, and 213.130 to 
evaluate containers and labeling are appropriate and sufficient to 
assure the quality of containers and the accuracy and legibility of 
their labels.
    In Sec.  213.186, FDA proposes master production and control 
recordkeeping requirements that are more tailored to medical gases than 
the current requirements in Sec.  211.186. Paragraph (a) would require 
that master production and control records for each medical gas be 
prepared, dated, and signed to assure uniformity from batch to batch. 
Paragraph (a) would also require that the preparation of such records 
be described in a written procedure, and that such written procedure be 
followed. Paragraph (b) proposes to require certain information for 
each master production and control record. The records would be 
required to include: The product name and strength; a list of all 
components and any incoming designated medical gases used in 
manufacturing designated by names or codes sufficiently specific to 
indicate any special quality characteristics; a description of the 
containers, closures, and packaging materials and labels; and complete 
manufacturing and control instructions, sampling and testing 
procedures, specifications, special notations, and precautions to be 
followed.
    These proposed requirements differ from the requirements in Sec.  
211.186 because of the differences in manufacturing and distribution of 
medical gases. For example, because medical gas manufacturing generally 
includes some venting of gas, measuring calculated excess of component, 
theoretical weight, and theoretical yield is infeasible.
    In lieu of the requirements found in Sec.  211.188, FDA proposes 
Sec.  213.189, which would impose batch production and control 
recordkeeping requirements for each batch of medical gas produced. 
Paragraph (a) would require batch production and control records to be 
prepared for each batch of medical gas produced. Paragraph (b) would 
require that batch production and control records include documentation 
that each significant step in the manufacturing, processing, packing, 
and holding process was accomplished, including:
    <bullet> Dates and times of each significant step, including in-
process and laboratory tests as applicable. This documentation would 
include any prefill, filling, or post-filling inspections, which are 
essential to assuring product meets applicable standards.
    <bullet> A description of the container for the medical gas, 
including the number and size of the containers filled as applicable. 
The containers used in manufacturing and filling operations can vary 
significantly, so documenting the containers is important for tracking 
purposes.
    <bullet> Specific identification of each component and its source 
or in-process material used as applicable.
    <bullet> Measures of components used in the course of processing as 
applicable.
    <bullet> Testing results, including any in-process test results and 
finished product test results.
    <bullet> Dated signature or initials of the persons performing and 
directly supervising or checking each significant event in the 
operation.
    <bullet> Inspection of the packaging and labeling area before and 
after use.
    <bullet> Complete labeling control records, including specimens or 
copies of all labeling used and label application and reconciliation 
records as appropriate. Because labeling does not always need to be 
applied due to the reuse of labels, documentation of these labeling 
control activities is important to help prevent mix-ups and the 
incorrect application of labeling.
    <bullet> Any investigation made according to Sec.  213.192.
    Proposed Sec.  213.192 would contain production record review 
requirements for medical gases. Under paragraph (a), manufacturing 
production and control records, including those for packaging and 
labeling, would need to be reviewed and approved by the quality unit to 
determine compliance with all established, approved written procedures 
before release or distribution of a batch. The quality unit would also 
be required to review production records to determine whether errors or 
unexplained discrepancies have occurred prior to batch release. If any

[[Page 31320]]

errors or unexplained discrepancies have occurred, or a batch or any 
component of the batch fails to meet specifications, the firm would be 
required to conduct thorough investigations and take appropriate 
corrective actions. FDA further proposes to require a written record of 
the investigation, including the conclusions and followup. However, for 
entities that fill at a delivery site, paragraph (b) would require that 
production and control records be reviewed and approved by the quality 
unit to determine compliance with all established, approved written 
procedures within 1 business day after fill. FDA believes this 
additional time is needed for reviewing such records associated with 
filling at a delivery site because delivery personnel typically conduct 
such filling at multiple locations. As such, it is impractical for the 
quality unit to be present at the time of filling, and the 
characteristics of the gas are not expected to change during the 
filling process. Therefore, the Agency believes it is appropriate for 
the quality unit to review production and control records shortly after 
delivery is completed.
    FDA recognizes that, because containers and labels are reused many 
times for medical gases, firms are generally unable to trace the 
history of a cylinder's use or identify the root cause of a cylinder-
related problem. Nevertheless, if an error or unexplained discrepancy 
associated with a cylinder is identified, or if a cylinder is found not 
to meet any of its specifications, FDA believes it is necessary for the 
firm to conduct a thorough investigation to identify the problem and 
take appropriate corrective action, such as taking a faulty cylinder 
out of circulation. FDA believes this proposal would establish 
production record review requirements that would assure that medical 
gases meet the requirements of the FD&C Act as to safety and have the 
identity, strength, quality, and purity they are purported or 
represented to possess.
    FDA is also proposing Sec.  213.194, which would impose laboratory 
recordkeeping requirements. Paragraph (a) would require that laboratory 
records related to the manufacture of a medical gas include complete 
data derived from all tests necessary to ensure compliance with 
established specifications and standards, including examinations and 
assays. Laboratories would have to keep a complete record of all data 
created in the course of each test, including the records described in 
paragraphs (a)(1) through (4), as follows:
    <bullet> A description of the sample, the batch or lot number to be 
tested, the date the sample was taken, and the date the sample was 
tested.
    <bullet> The test method used, the test result, how the results 
compare with established standards of identity, strength, quality, and 
purity for the component, container, in-process materials (as 
applicable), and medical gas tested, a record of any calculations 
performed and any calculated results, and the unit of measurement of 
the result. It would not be necessary to provide the actual calculation 
where the result is evident through use of simple addition and 
subtraction (for example 100 - 0.1 = 99.9).
    <bullet> Where applicable, any graphs, charts, and spectra from 
laboratory instrumentation, properly identified to show the specific 
component, in-process material, or medical gas for each lot tested.
    <bullet> The initials or signature of the person performing the 
test as well as a second person showing that the original records have 
been reviewed for accuracy, completeness, and compliance with 
established standards.
    Paragraph (b) would require that complete records be maintained of 
any modification of an established test method. These records would 
need to include the reason for the modification and data to verify that 
the modification produced results that are at least as accurate and 
reliable for the material being tested as the established method. 
Paragraph (c) would require that complete records be maintained of any 
testing and standardization of laboratory reference standards, 
reagents, and standard solutions. These requirements are the same as 
those that currently apply to medical gases under Sec.  211.194(b) and 
(c).
    Paragraph (d) would require that complete records be maintained of 
the periodic calibration or verification of calibration of laboratory 
instruments, apparatus, gauges, and recording devices that would be 
required by Sec.  213.160(b)(4). This paragraph differs from Sec.  
211.194(d) in that it would allow for verification of calibration. It 
is FDA's understanding that it is common for some medical gas equipment 
to be calibrated by a supplier or other entity prior to arrival at the 
laboratory.
    Paragraph (e) would require that complete records be maintained of 
all stability testing performed in accordance with proposed Sec.  
213.166. This requirement is consistent with the current requirement in 
Sec.  211.194(e). As described above, only a subset of medical gases 
are expected to be subject to stability testing requirements, but for 
such gases, documentation of stability testing is essential to ensuring 
that the gas will maintain its stability for the expected timeframe.
    Under proposed Sec.  213.196, distribution records would be 
required to contain the name of the product, the lot or batch number, 
the consignee's contact information, and the date and quantity shipped. 
FDA believes that including the lot or batch number is essential to 
properly tracking and tracing product in the event a safety issue is 
discovered. Information about the dosage form, as required in Sec.  
211.196, is not necessary for medical gases because the dosage form is 
always ``gas.'' For medical air and medically appropriate combinations 
of designated medical gases, the distribution record would also need to 
include the percentage of each gas. FDA believes that this information 
is essential to prevent mix-ups because the concentration of each 
component would be clearly determined.
    Proposed Sec.  213.198 contains proposed requirements for complaint 
files that are similar to those requirements that currently apply to 
medical gases under Sec.  211.198. Paragraph (a) would require that 
written procedures be established and followed for the receipt and 
handling of all written and oral complaints concerning a medical gas. 
These procedures would have to include a quality unit review of any 
complaint involving the possible failure of a medical gas to meet its 
specification as well as an investigation to determine the cause of the 
failure. An out-of-specification medical gas (for example, a 
combination containing higher quantities of oxygen than intended) could 
result in serious patient harm if administered. These procedures would 
also be required to include provisions for determining the need for an 
investigation under Sec.  213.192 and determining whether the complaint 
represents an event that would need to be reported under proposed part 
230.
    Paragraph (b) would require that a written record of each complaint 
be maintained. This record would have to include the name of the 
medical gas, the lot or batch number, the name of the complainant, the 
date the complaint was received, the nature of the complaint, and the 
response to the complaint. It would also be required to include the 
findings of any investigation and followup. If an investigation is not 
conducted, the record would need to include the reason that an 
investigation was found not to be necessary and the name of the 
responsible person making such a determination.

[[Page 31321]]

    Paragraph (c) would require the maintenance of complaint files in a 
manner such that they would be readily available for inspection by the 
firm or by FDA during an inspection. Complaint files would be required 
to be maintained for at least 1 year after the date that the complaint 
was received or for at least 3 years after distribution of the medical 
gas, whichever is longer. This proposed record retention period is the 
same as that used in Sec.  211.180(a) for certain over-the-counter 
drugs lacking expiration dating and would facilitate review and 
evaluation by the firm of information that is received after the event, 
thus facilitating the firm's ability to observe trends over time.
12. Returned and Salvaged Medical Gases
    Subpart K contains proposed requirements for returned and salvaged 
medical gases. FDA proposes in Sec.  213.204 to require that returned 
medical gases be identified as such and held. Moreover, if the 
conditions under which the returned gases have been held, stored, or 
shipped before or during their return, or if the condition of the gas, 
its container, carton, or labeling, as a result of storage or shipping, 
cast doubt on its safety, identity, strength, quality, or purity, the 
returned medical gas would need to be destroyed unless examination, 
testing, or other investigations prove the gas meets appropriate 
standards of safety, identity, strength, quality, or purity. These 
requirements would apply to situations in which a distributed medical 
gas is sent back to a firm due to a quality issue. Firms would need to 
maintain certain records of returned medical gases. Further, if the 
reason for a medical gas being returned implicates associated batches, 
an appropriate investigation pursuant to proposed Sec.  213.192 would 
need to be conducted. Procedures for holding, testing, and use of 
returned medical gases would need to be in writing and followed. 
Proposed Sec.  213.204 would not apply to the routine refilling of a 
cryogenic medical gas containers in the normal course of business 
unless the container was returned for a quality issue.
    Proposed section 213.204 is largely the same as current Sec.  
211.204, with an added provision regarding routine refilling. FDA 
believes that the current requirements for returned drug product are 
appropriate for medical gases. However, the proposed routine refilling 
provision would be essential to address the fact that small amounts of 
gas are expected to remain in a returned container that will be reused. 
This situation is uncommon for other types of drug products, but 
medical gas containers are generally reusable, and complete purging of 
a container is impracticable. Another notable difference compared to 
Sec.  211.204 is the omission of reprocessing requirements, as it is 
FDA's understanding that reprocessing of returned medical gases does 
not occur. Generally, gases are reused if they meet specifications; 
otherwise, they are vented. FDA requests comment on this issue.
    Section 213.208 would allow the salvaging of medical gases that 
have been subjected to improper storage conditions unless the gas's 
container has been subjected to adverse conditions that impact the 
identity, strength, quality, and purity of the medical gas, or the 
integrity of the container closure. These requirements would apply to 
situations in which a medical gas has been subject to improper storage 
conditions under the control of a firm responsible for the manufacture, 
processing, packing, or holding of the gas. Scenarios in which this may 
arise include natural disasters, facility structural damage (such as a 
building collapse), or exposure to smoke in the event of a fire. If 
there is a question whether the medical gas has been subjected to 
improper storage conditions, salvaging would only be permitted if there 
is evidence from laboratory tests that the gas meets all applicable 
standards of identity, strength, quality and purity, and the closure is 
not compromised. Section 213.208 also would require that firms maintain 
and follow written procedures for the holding, testing, and use of 
salvaged medical gases. While medical gases in sealed containers are 
generally considered unlikely to be affected by adverse conditions, 
such as natural disasters or significant changes in temperature, 
humidity, or pressure, a medical gas container could be damaged by such 
circumstances. Therefore, it is essential for firms to evaluate any 
containers potentially affected by adverse conditions.
13. Notable Part 211 Provisions FDA Does Not Propose To Include in Part 
213
    In this section, FDA discusses existing CGMP provisions of note 
that the Agency has not proposed for inclusion in part 213. In the 
proposed CGMP requirements described above in this section, FDA 
addressed some individual requirements in part 211 that the Agency has 
not proposed for inclusion in part 213, but this section addresses some 
other sets of requirements that are outside the scope of the above 
discussion. We specifically request public comment on these areas.
    The requirements in Sec.  211.28(a), (b), and (d) regarding 
personnel responsibilities are not included in this proposed rule. 
Medical gases are generally manufactured, stored, combined, and 
distributed under pressure in closed systems. Therefore, the risk of 
contamination is generally lower than for other drugs. FDA believes 
that the other requirements that would be established by this proposed 
rule would sufficiently address the risk of contamination in medical 
gases.
    FDA is not proposing to include certain buildings and facilities 
requirements from part 211, subpart C, in proposed part 213, subpart C 
(specifically Sec. Sec.  211.44 through 211.58) because they are not 
relevant to the manufacture, processing, packing, and holding of 
medical gases, or because the proposed requirements in Sec.  213.42 
sufficiently address these issues. For example, FDA believes that 
specific lighting requirements are not necessary because the risk of 
lightbulbs breaking and contaminating the gas inside a closed 
manufacturing system is remote. Moreover, FDA believes that the level 
of lighting at a facility would be sufficiently addressed by the 
requirements in Sec.  213.42 to ensure that the design, space, and 
placement of equipment in a facility help protect against mix-ups (for 
example, we interpret this to mean that, among other things, employees 
have sufficient light to read labels). Similarly, specific ventilation 
requirements are not necessary because the closed manufacturing system 
for medical gases is generally unaffected by external factors such as 
air quality in the facility. Other specific requirements in part 211 
regarding plumbing, sewage, and sanitation are also unnecessary because 
the risk of contamination is extremely low and because the proposed 
requirements in part 213 would adequately address these concerns.
    The current requirements for filters in Sec.  211.72 are also not 
included in this proposed rule. Because medical gases are not 
administered as injectable drugs, the requirements in Sec.  211.72 are 
not relevant. FDA seeks comment on the need for filter requirements.
    Because medical gases are generally not expected to expire or 
degrade under ordinary storage conditions, FDA does not believe it is 
necessary to include in this proposed rule the requirements in Sec.  
211.86 regarding using the oldest approved stock first or Sec.  211.87 
regarding retesting product that has been stored for long periods of 
time or whose containers have been exposed to air.

[[Page 31322]]

    FDA is not proposing to include a calculation of yield requirement 
similar to Sec.  211.103. Gas loss is expected during manufacturing and 
can be variable even under normal operating conditions. The 
requirements proposed in part 213 would be sufficient to determine that 
the medical gas in the container is the amount and type indicated by 
the label and required by the final product specifications. Therefore, 
such a requirement would not provide useful information to firms or 
FDA.
    FDA is not proposing to include an equipment identification 
requirement similar to Sec.  211.105. Because equipment used for 
medical gas manufacturing is expected to be specific to the gas being 
manufactured, there is typically no changeover of machinery for firms 
to track. Accordingly, FDA does not believe such a requirement is 
necessary to assure the safety, identity, strength, quality, and purity 
of medical gases.
    FDA is not proposing to include time limitations on production 
similar to Sec.  211.111 because medical gases are generally not 
expected to expire or degrade under ordinary storage conditions. FDA 
also is not proposing to include requirements regarding the control of 
microbiological contamination similar to Sec.  211.113 because the risk 
of contamination is extremely low for these products.
    FDA is not proposing to include a requirement similar to Sec.  
211.115, which establishes requirements for reprocessing. The Agency is 
not aware that reprocessing occurs for medical gases. Rather, it is 
FDA's understanding that gases not meeting specifications generally 
would be vented. However, as mentioned above, we welcome comment on 
this issue, including any example scenarios in which medical gases are 
reprocessed.
    FDA is not proposing to include the drug product inspection 
requirements in Sec.  211.134. Because cylinders are reused many times, 
FDA believes that the labeling inspection provisions in proposed Sec.  
213.122(f) would assure proper product labeling.
    FDA is not proposing to include the reserve sampling requirements 
in Sec.  211.170 because the requirements in Sec.  211.170 are not 
appropriate for medical gases. The proposed sampling requirements 
elsewhere in part 213 would be sufficient to address sampling for in-
process and finished medical gases.
14. Proposed Revisions to 21 CFR Part 4 CGMP Requirements
    FDA recognizes that some medical gases are marketed as part of a 
combination product. For example, a medical gas may be marketed with a 
device constituent part (for example, a portable liquid oxygen unit or 
a pressure regulator). However, a gas cylinder with a simple on/off 
valve (i.e., without a pressure regulator) would generally not be 
considered a device. Combination products are subject to part 4, 
subpart A (21 CFR part 4, subpart A), which clarifies the application 
of CGMP regulations to combination products and provides a streamlined 
approach to demonstrate CGMP compliance for facilities that manufacture 
co-packaged or single-entity combination products.
    FDA intends to amend part 4, subpart A to reflect the new 
requirements for medical gases under part 213 and clarify how to comply 
with part 4, as amended. FDA proposes to include in 21 CFR 4.2 a 
definition of the term ``medical gas'' consistent with the definition 
in proposed part 213, as well as a definition of ``medical gas CGMPs'' 
that refers to part 213.
    FDA also proposes to revise Sec.  4.3(a) (21 CFR 4.3(a)) to account 
for combination products that contain a medical gas. For such products, 
part 213 would apply rather than parts 210 and 211, as described in 
proposed new Sec.  4.3(e).
    FDA proposes to include in Sec.  4.4(b) (21 CFR 4.4(b)) specific 
provisions for combination products that include a medical gas as a 
drug constituent part to enable use of a streamlined approach for 
designing and implementing a CGMP operating system that complies with 
CGMP requirements for medical gas-device combination products akin to 
the streamlined approaches available for other drug-device combination 
products. FDA believes that when a manufacturer of a medical gas-device 
combination product demonstrates that its CGMP operating system 
complies with part 213 in full, the provisions from part 820 (21 CFR 
part 820), with which manufacturers must demonstrate compliance, should 
be the same as those currently listed in Sec.  4.4(b)(1) because part 
213 covers the same general areas as part 211, and FDA is not aware of 
device characteristics that would necessitate a different approach. If 
a medical gas-device combination product manufacturer demonstrates that 
its CGMP operating system complies with part 820 in full, FDA believes 
that the following proposed requirements from part 213 would be 
appropriate to ensure that critical aspects of medical gas production 
are addressed:
    <bullet> Section 213.84. Testing and approval or rejection of 
components, containers, and closures.
    <bullet> Section 213.94. Medical gas containers and closures.
    <bullet> Section 213.122. Materials examination and usage criteria.
    <bullet> Section 213.165. Testing and release for distribution.
    <bullet> Section 213.166. Stability testing and expiration dating 
for medical gases marketed under applications submitted under section 
505 or 512 of the FD&C Act.
    <bullet> Section 213.204. Returned medical gases.
    <bullet> Section 213.208. Salvaging of medical gases.
    FDA proposes to make other conforming edits as needed, such as 
revising Sec.  4.4(e) to include a reference to part 213, and to 
clarify (where appropriate) throughout part 4, subpart A the 
requirements for medical gases.
    FDA specifically seeks comment on this proposal, including: (1) 
Which part 213 provisions should be included in the list of provisions 
for combination products containing a medical gas as a drug constituent 
part for which the CGMP operating system has been shown to comply with 
part 820; (2) whether the part 820 provisions listed in Sec.  4.4(b)(1) 
should be revised for combination products containing a medical gas as 
a drug constituent part to include other 820 requirements or to remove 
certain existing references to part 820 call-outs; and (3) whether it 
is appropriate to permit manufacturers to have the option of choosing 
to demonstrate compliance with part 213 in full along with the part 820 
call-out provisions or compliance with part 820 in full along with the 
part 213 call-out provisions.
    The Agency believes that part 4, subpart A helps ensure appropriate 
implementation of CGMP requirements for combination products while 
avoiding unnecessary redundancy in CGMP operating systems for these 
products, and that, given the benefits of the approach in part 4, 
subpart A, it should include combination products that contain a 
medical gas. FDA expects that sponsors of medical gases submitted under 
section 505 of the FD&C Act with a delivery system are already aware 
that they are producing a combination product, and as such should 
already be familiar with the requirements in part 4, subpart A. For 
firms that combine a designated medical gas or medically appropriate 
combination of designated medical gases with a finished, off-the-shelf 
device, FDA expects that the burden for complying with the device CGMP 
requirements would be relatively low. In some cases, firms may be able 
to leverage information from their device supplier to demonstrate 
compliance

[[Page 31323]]

with device call-outs. Additionally, some device provisions are not 
expected to apply in all cases; some class I devices are exempt from 
the design control requirements in 21 CFR 820.30, and the installation 
and servicing requirements in 21 CFR 820.170 and 820.200, respectively, 
are not applicable to all devices.

C. Proposed Certification and Annual Reporting Provisions

    The proposed rule would establish, within new part 230, regulations 
setting forth the requirements for obtaining certification of a 
designated medical gas pursuant to section 576 of the FD&C Act. Since 
the passage of FDASIA, many applicants have sought marketing 
authorization for a designated medical gas under section 576 of the 
FD&C Act, and this proposed rule would codify that process in FDA's 
regulations while also providing additional clarity where necessary. As 
proposed, part 230 would contain the requirements for filing a 
certification request for a designated medical gas for human use, 
animal use, or both. FDA is also proposing to make certain provisions 
in parts 314 and 514 inapplicable to designated medical gases, given 
that part 230 would apply instead.
    Sections 575 and 576 of the FD&C Act also authorize FDA to deem 
certain medical gases not listed in section 575(1)(A) through (G) to be 
designated medical gases (FD&C Act section 575(1)(H)) and to certify 
designated medical gases or medically appropriate combinations of such 
gases for certain indications for use not listed in section 
576(a)(3)(A)(i)(I) through (VII) (FD&C Act section 
576(a)(3)(A)(i)(VIII)). The Agency is not proposing regulations 
implementing these provisions as part of this rulemaking because the 
Agency does not expect to deem additional medical gases to be 
designated medical gases at this time. In addition, the Agency does not 
expect to certify designated medical gases for indications beyond those 
currently described in section 576 of the FD&C Act at this time. If, in 
the future, FDA decides it would be appropriate to deem additional 
medical gases to be designated medical gases or to certify designated 
medical gases or medically appropriate combinations of such gases for 
additional indications for use, FDA expects to undertake such actions 
without the need for further rulemaking.
    FDA also notes that section 575(1)(F) of the FD&C Act provides that 
carbon monoxide is a designated medical gas if it ``meets the standards 
set forth in an official compendium.'' Section 201(j) of the FD&C Act 
defines ``official compendium'' to include the U.S. Pharmacopeia (USP), 
the official Homeopathic Pharmacopeia of the United States (HPUS), the 
official National Formulary (NF), or any supplement to any of them. 
There is currently no monograph in the USP or NF for carbon monoxide. 
There is a HPUS monograph for carbon monoxide, though it is 
inapplicable to carbon monoxide as a designated medical gas for use in 
lung diffusion testing. FDA does not intend to object to the marketing 
of carbon monoxide for use in lung diffusion testing as long as the 
product conforms to one of the alternatives in the Center for Drug 
Evaluation and Research's Manual of Policies and Procedures 5310.7 Rev. 
1, Acceptability of Standards from Alternative Compendia (BP/EP/JP) 
(Ref. 10). This proposed approach is consistent with the draft policy 
described in the draft guidance for industry entitled ``Certification 
Process for Designated Medical Gases'' (Ref. 1). If and when a 
monograph entitled ``Carbon Monoxide'' is added to the USP or NF, FDA 
expects original manufacturers that wish to continue marketing carbon 
monoxide to promptly submit a certification request.
1. Definitions
    Proposed Sec.  230.3(b)(2) defines the term ``applicant.'' An 
applicant is proposed to be defined as any person or entity who submits 
a certification request for a designated medical gas under part 230, 
including supplements. This is generally the original manufacturer. An 
applicant would also include any person or entity who owns a granted 
certification for a designated medical gas under part 230. This 
definition is generally consistent with FDA's use of the term 
``applicant'' with regard to NDAs and ANDAs (see 21 CFR 314.3(b)), as 
well as NADAs and ANADAs (see 21 CFR 514.3).
    FDA also proposes to define ``certification request'' as a 
submission under section 576 of the FD&C Act requesting certification 
of a medical gas as a designated medical gas. After a certification 
request is deemed to be granted, a designated medical gas is deemed, 
alone or in combination, as medically appropriate, with another 
designated medical gas or gases for which a certification or 
certifications have been granted, to have in effect an approved 
application under section 505 or 512 of the FD&C Act, subject to all 
applicable postapproval requirements, for the applicable indications 
for use described in section 576(a)(3)(A)(i)(I) through (VIII) of the 
FD&C Act.
    FDA proposes to define ``FDA or Agency'' to mean the Food and Drug 
Administration, consistent with other Agency regulations.
2. General Requirements for All Certification Submission Types
    Proposed Sec.  230.50 would establish the general requirements 
related to designated medical gas certification requests. The 
requirements would apply to all submission types. Proposed Sec.  
230.50(a)(1) would provide that the certification process described in 
part 230, subpart B applies to designated medical gases for the 
indications described in section 576(a)(3)(A)(i) of the FD&C Act. 
Currently, manufacturers who intend to market medical gases that do not 
meet the definition of designated medical gas, or who intend to market 
designated medical gases for indications not described in section 
576(a)(3)(A)(i) of the FD&C Act, must obtain approval of that medical 
gas under part 314 or part 514, or both, as applicable. For example, if 
an applicant intends to market nitrous oxide for a use other than 
analgesia (see section 576(a)(3)(A)(i)(III) of the FD&C Act), the 
certification process in proposed part 230 would not be available for 
that drug product at this time. If FDA deems additional indications for 
use appropriate under section 576(a)(3)(A)(i)(VIII) of the FD&C Act, 
the certification process could extend to designated medical gases for 
those uses. However, as of the date of this proposed rule, FDA has not 
deemed any additional indications for use to be appropriate for any 
designated medical gases.
    Also in Sec.  230.50(a)(1), FDA proposes to require any person who 
seeks to initially introduce or deliver for introduction a designated 
medical gas into interstate commerce to file a request for 
certification. An applicant would be required to identify its intention 
to market their designated medical gas for human use, animal use, or 
both. If a certification is deemed to be granted, a designated medical 
gas, alone or in combination, as medically appropriate, with another 
designated medical gas or other designated medical gases for which a 
certification or certifications have been granted, would be deemed to 
have in effect, for the uses described in section 576(a)(3)(A)(i) of 
the FD&C Act:
    <bullet> An approved application under section 505 of the FD&C Act, 
if the applicant requested certification solely for human use;
    <bullet> an approved application under section 512 of the FD&C Act, 
if the

[[Page 31324]]

applicant requested certification solely for animal use; or
    <bullet> approved applications under sections 505 and 512 of the 
FD&C Act, if the applicant requested certification for both human and 
animal use.
    (See section 576(a)(3)(A)(i); see also proposed Sec.  230.105.) 
Applicants should submit one request per designated medical gas, 
regardless of how many of their facilities manufacture or will 
manufacture that designated medical gas. Persons who receive a 
designated medical gas from an applicant or another person and fill the 
gas into containers, including via liquid to liquid at a delivery site, 
are not expected to submit certification requests under part 230 
because the gas they are handling should be the subject of a granted 
certification held by another entity. (See also proposed Sec.  213.82.)
    Proposed Sec.  230.50(a)(2) would describe the relationship between 
the proposed certification requirements in part 230 and parts 314 and 
514. Proposed Sec.  230.50(a)(2) would provide that any person that 
proposes to market a medical gas that is a new drug for human use must 
obtain approval under part 314, and any person that proposes to market 
a medical gas that is a new animal drug for animal use must obtain 
approval under part 514, unless the medical gas meets the definition of 
a designated medical gas, and the medical gas is proposed to be 
marketed, alone or in combination (as medically appropriate), with 
another designated medical gas or gases for which a certification or 
certifications have been granted, for a use described under section 
576(a)(3)(A)(i) of the FD&C Act. ``New drug'' and ``new animal drug'' 
are defined in section 201(p) and (v) of the FD&C Act.
    Proposed Sec.  230.50(b) would outline the information that must be 
submitted in a certification request. In addition, though not a 
proposed requirement in this proposed rule, FDA recommends that the 
applicant include a cover letter describing the purpose of the 
submission (e.g., original certification, amendment to supply 
additional information requested by FDA). Such cover letters often 
provide context and information that would be helpful to the Agency as 
it processes certification requests. Under Sec.  230.50(b)(1), the 
certification request would need to include the name, address, 
telephone number, and email address of the person or entity requesting 
certification. If the address of the entity requesting certification is 
not in the United States, the certification request would need to 
contain the name and address of, and be countersigned by, an attorney, 
agent, or other authorized official who resides or maintains a place of 
business within the United States. Under Sec.  230.50(b)(2), the 
certification request would also need to identify the type of 
submission as one of the following:
    <bullet> Original certification request: An initial request for 
certification by an applicant for certification of a medical gas as a 
designated medical gas.
    <bullet> Amendment to a pending submission: A submission related to 
a pending submission that revises existing information or provides 
additional information, including responses to Information Request 
Letters.
    <bullet> Resubmission: A complete submission that has been revised 
and submitted again following a previous denial (if the applicant 
chooses to resubmit its submission, it would need to provide a written 
response to all deficiencies identified in FDA's denial letter, along 
with other information required for certification requests; this would 
help assure that past deficiencies are addressed before applicants 
resubmit, thus promoting the efficient use of Agency resources)
    <bullet> Supplement to a granted certification: Any submission that 
contains a change to a certification that was previously granted.
    <bullet> Other: Any submission that does not fit into one of the 
other categories described in this list.
    Under Sec.  230.50(b)(3), the applicant would also need to include 
a description of the designated medical gas. Each designated medical 
gas certification request would need to include the name of the gas, as 
well as a certification statement that the designated medical gas meets 
the appropriate compendial standard. FDA intends to develop a 
designated medical gas certification form which would include a 
certification statement. The Agency anticipates the form would have OMB 
approval prior to the finalization of any proposed rule.
    Under Sec.  230.50(b)(4), applicants would also be required to 
include certain facility information in the certification request, 
including the name and address of the facility or facilities where the 
designated medical gas will be initially produced. FDA uses the term 
``facility'' in this proposed provision to be consistent with the 
terminology in section 576(a)(1)(C) of the FD&C Act, which requires 
that a certification request include ``[t]he name and address of the 
facility or facilities where the medical gas is or will be 
manufactured.'' For purposes of this proposed regulation, the term 
``facility'' would be synonymous with the term ``establishment'' as it 
is used in part 207 (21 CFR part 207). Other facilities that only 
perform subsequent activities such as transfilling, mixing, or filling 
at a delivery site would not be considered ``facilities'' for purposes 
of this proposed regulation. Applicants would also need to include a 
brief description of the manufacturing or processing activities 
performed at each facility listed in the certification, which would 
include chemical reaction, physical separation, compression of 
atmospheric air, purification of a gas, or other activities to produce 
a designated medical gas. Applicants would also need to include an FDA 
Establishment Identifier (FEI), if one exists, and a Unique Facility 
Identifier (UFI) in accordance with the requirements of part 207 and 
section 510 of the FD&C Act (21 U.S.C. 360). If an applicant intends to 
open a new facility to manufacture the designated medical gas, FDA 
recognizes that the applicant may not have an FEI at the time of the 
certification request, as FEIs are generally assigned upon registration 
of a new establishment. However, for existing facilities, including the 
FEI in the certification request will assist FDA in monitoring its 
establishment inventory. Regarding the UFI, inclusion of this 
information will assist the Agency in linking certification requests to 
registration information required by section 510(b)(1) of the FD&C Act 
and 21 CFR 207.25(e). FDA's preferred UFI is the Data Universal 
Numbering System (DUNS) number (Ref. 11). Firms can acquire a DUNS 
number at no cost. For amendments and supplements, only changes to the 
list of facilities would need to be submitted.
    Under proposed Sec.  230.50(b)(5), the applicant would be required 
to certify in its certification request that its methods, facilities, 
and controls used in manufacturing, processing, packing, and holding of 
the designated medical gas, as applicable, are adequate to ensure the 
gas's safety, identity, strength, quality, and purity. This 
certification would be met by completing a field on the certification 
form referenced above. This information is critical to determining 
whether the medical gas manufactured at the facility is a designated 
medical gas because it meets applicable compendial standards (FD&C Act 
section 576(a)(1)(D)). Designated medical gases generally have narrow 
compendial standards, and requiring an applicant to certify that it 
employs appropriate methods, facilities, and controls would help ensure 
consistent, quality manufacture of a gas that meets such standards.
    Lastly, under Sec.  230.50(b)(6), if the Agency deems any other 
information

[[Page 31325]]

appropriate to determine whether the gas meets the definition of a 
designated medical gas, the applicant would be required to provide that 
additional information as well. This would generally be in the form of 
a written request by FDA for the additional information. The applicant 
may also provide other information that the applicant believes will 
assist the Secretary in evaluating the request.
    Though FDA is not proposing changes to its registration and listing 
regulations as they apply to designated medical gases, FDA notes that 
firms must also comply with applicable registration and listing 
requirements in section 510 of the FD&C Act and part 207. For example, 
firms must register establishments and list designated medical gases, 
or update existing registration and listing information, pursuant to 
part 207, subparts B and D.
    Proposed Sec.  230.50(c) would describe the requirements for 
submitting a certification request. Applicants would be required to 
submit a signed, completed request for certification either in an 
electronic format that FDA can process, review, and archive, or in hard 
copy by submitting two paper copies to the Center for Drug Evaluation 
and Research (CDER) Central Document Room. FDA encourages submission of 
certification requests through the NextGen Portal at <a href="https://edm.fda.gov">https://edm.fda.gov</a>. FDA intends to assign an NDA or NADA number (or both, if 
the applicant has expressed its intent to market the medical gas for 
human and animal use) for reference purposes when an original 
certification request is filed. If certification is granted, the 
applicant should use these application numbers in all further 
submissions to the Agency. If certification is not granted, and the 
applicant resubmits their certification request in the future, the 
previously assigned NDA and/or NADA number would continue to be the 
relevant application number(s).
    Section 230.65 would allow applicants to withdraw a certification 
request that has not been deemed granted. An applicant could notify FDA 
that it withdraws its certification request at any time prior to the 
certification being deemed granted. Withdrawal of a certification 
request would not preclude refiling. If a certification request is 
withdrawn, FDA would retain the certification request, and if the 
applicant requests a copy via Freedom of Information Act (FOIA) 
request, FDA would provide it pursuant to the fee schedule in FDA's 
public information regulations.
3. Supplements and Other Changes to a Granted Certification
    Section 230.70(a) of the proposed rule would require an applicant 
to submit a supplement if any information in the certification request 
has changed after the request has been deemed granted, including, but 
not limited to, the addition of a new facility manufacturing the 
designated medical gas, a change in contact information, or a change in 
the corporate name. FDA anticipates these are the most common types of 
information in the request that might change after certification has 
been deemed granted.
    Under proposed Sec.  230.70(b), the supplement would need to 
include a signed, completed request for certification form with the 
updated information in compliance with the requirements of Sec.  
230.50, and would need to be submitted no later than 30 calendar days 
after the date the change occurred. FDA proposes that supplements may 
be submitted after the fact because the Agency does not anticipate that 
the types of changes submitted in a supplement would need to be 
approved before the change occurs.
4. Change in Ownership of a Certification That Has Been Granted
    Proposed Sec.  230.72 would address situations in which a 
designated medical gas certification that has been granted undergoes a 
change in ownership, for example, due to a merger or acquisition. 
Proposed Sec.  230.72 would expressly allow for the transfer of 
ownership of such a certification. When a transfer occurs, both the new 
and former owners would be required to submit certain information to 
FDA. Under proposed paragraph (a), the former owner would be required 
to submit a letter or other document explaining that all rights to the 
certification have been transferred to the new owner. Under proposed 
paragraph (b), the new owner would be required to submit a supplement 
under Sec.  230.70 signed by the new owner describing any changes in 
the conditions in the granted certification, and a letter or other 
document identifying the date the transfer of ownership is effective.
5. Annual Report
    Proposed Sec.  230.80(a) would require applicants to submit an 
annual report each year within 60 calendar days of the anniversary of 
the date the certification was deemed granted. Section 576(a)(2) of the 
FD&C Act provides that a certification request is deemed to be granted 
unless, within 60 days of its filing, FDA denies the request based on 
certain findings; FDA interprets the period of 60 days in this 
provision to mean a period of 60 calendar days. The applicant would be 
required to submit a signed, completed annual report form either in an 
electronic format that FDA can process, review, and archive, or in hard 
copy by submitting two paper copies to CDER's Central Document Room. 
The annual report would be required to contain the following 
information from the prior 12 months, pursuant to proposed Sec.  
230.80(b):
    <bullet> A summary of any significant new information that might 
affect the safety, effectiveness, or labeling of the designated medical 
gas. The applicant would also be required to include any actions it has 
taken or intends to take as a result of this information.
    <bullet> The applicant would need to include the National Drug Code 
(NDC) numbers, the quantities distributed for domestic use, and the 
quantities distributed for foreign use. The disclosure of financial or 
pricing data would not be required.
    <bullet> Any changes to the applicant's name or contact 
information. This information would need to be submitted in a 
supplement no later than 30 calendar days after the change occurred 
pursuant to proposed Sec.  230.70, but the Agency believes that 
receiving all current information consolidated in an annual report will 
help FDA keep track of applicants and ensure that the Agency has 
current information.
    <bullet> The applicant would need to include a list of current 
facilities, and a list of facilities that were used since the previous 
annual report (or since the certification was deemed granted) but are 
no longer in use.
    This information would be critical to allow FDA to evaluate all 
changes to the product and its manufacturing since the most recent 
report and determine whether any changes have the potential to alter 
the identity of the gas such that it no longer meets the applicable 
compendial standard or the definition of a designated medical gas.
6. FDA Review of Certification Submissions
    Under proposed Sec.  230.100(a), as part of its review, FDA would 
consider information submitted with the certification submission along 
with any other available, relevant information of which FDA becomes 
aware. Such information could include information obtained from State 
or Federal officials, FDA inspection reports, or any other source. Per 
Sec.  230.100(b), FDA proposes the following grounds for denying a 
submission:

[[Page 31326]]

    <bullet> The medical gas that is the subject of the submission is 
not a designated medical gas. For example, FDA currently would deny a 
certification request for oxygen that fails to meet the standards for 
Oxygen, USP.
    <bullet> The submission does not contain the required information 
or otherwise appears to lack sufficient information to determine that 
the medical gas is a designated medical gas. This may occur if the 
applicant fails to certify that the medical gas meets the applicable 
compendial standards, or if FDA obtains evidence that the medical gas 
fails to meet applicable compendial standards.
    <bullet> The applicant's methods, facilities, and controls used for 
the manufacture, processing, and handling of the designated medical 
gas, as applicable, are not adequate to ensure its safety, identity, 
strength, quality, and purity, or
    <bullet> Denying the request is otherwise necessary to protect the 
public health.
    Under proposed Sec.  230.100(c), within 60 calendar days of filing 
of a certification submission, FDA could contact the applicant to 
request additional information regarding the submission if it 
determines that the submission is missing required information, that 
FDA needs such information to determine whether the medical gas is a 
designated medical gas, or that FDA determines such information is 
necessary to protect the public health. This proposed provision would 
help applicants correct or complete their submission, or decide to 
withdraw, in a timely and efficient manner. Section 576(a)(2) of the 
FD&C Act provides that a certification request is deemed to be granted 
unless, within 60 days of its filing, FDA denies the request based on 
certain findings; FDA interprets the date of filing under this 
provision to mean the date that the certification request is received 
by the Agency. Upon receipt of an amendment to a pending certification 
request, this 60-day period would restart to allow FDA sufficient time 
to review new information received. FDA may find that the submission 
lacks sufficient information if, within the 60-day review period, FDA 
is unable to contact the applicant to obtain and evaluate the missing 
information or if FDA is able to contact the applicant but is not 
provided with the additional information within the 60-day review 
period.
    Proposed Sec.  230.100(d) would provide that, within 60 calendar 
days of filing of a submission, if FDA makes one of the findings 
described in proposed Sec.  230.100(b), FDA will notify the applicant 
in writing that the submission is denied and provide the basis for 
FDA's determination.
7. When a Certification Submission Is Deemed Granted
    Proposed Sec.  230.105 would provide that, unless FDA makes one of 
the findings described in Sec.  230.100(b) and notifies the applicant 
within 60 calendar days of filing that the submission is denied, 
certification is deemed to be granted and the designated medical gas 
will be deemed to have in effect an approved application under section 
505 or 512 of the FD&C Act, or both, for the indications specified in 
section 576(a)(3)(A)(i) of the FD&C Act. FDA would notify the applicant 
in writing and intends to post the letter on the Agency's website. The 
designated medical gas for which a certification is deemed granted 
would be subject to all applicable postapproval requirements. If, 
however, FDA has not responded during the 60-day review time period, 
the applicant may begin marketing their designated medical gas unless 
and until FDA withdraws or revokes approval.
8. Withdrawal or Revocation of Approval of an Application for a 
Designated Medical Gas
    Proposed Sec.  230.150 describes requirements concerning withdrawal 
or revocation of approval of an application for a designated medical 
gas. Proposed paragraph (a) addresses withdrawal of approval. FDA 
proposes that it will notify the applicant and afford an opportunity 
for a hearing on a proposal to withdraw approval of the application 
under the procedure in Sec.  314.200 (21 CFR 314.200), Sec.  514.200 
(21 CFR 514.200), or both, as applicable, for any of the grounds listed 
in proposed paragraph (a)(1). FDA proposes that if the Secretary of the 
Department of Health and Human Services has suspended approval on a 
finding that there is an imminent hazard to public health, FDA will 
initiate the withdrawal process. Additionally, FDA proposes that it 
will initiate the withdrawal process if it makes any of the following 
findings:
    <bullet> Clinical or other experience, tests, or other scientific 
data show that the designated medical gas is unsafe for use under the 
conditions of use upon the basis of which the application was approved;
    <bullet> New evidence of clinical experience not available to FDA 
until after the application was approved, or tests by new methods, or 
tests by methods not deemed reasonably applicable when the application 
was approved, evaluated together with the evidence available when the 
application was approved, reveal that the designated medical gas is not 
shown to be safe for use under the conditions of use upon the basis of 
which the application was approved;
    <bullet> Upon the basis of new information before FDA with respect 
to the designated medical gas, evaluated together with the evidence 
available when the application was approved, that there is a lack of 
substantial evidence from adequate and well-controlled investigations 
as defined in 21 CFR 314.126, that the designated medical gas will have 
the effect it is purported or represented to have under the conditions 
of use prescribed, recommended, or suggested in its labeling; or
    <bullet> The application contains any untrue statement of a 
material fact.
    In Sec.  230.150(a)(2), FDA proposes that it may notify the 
applicant and afford an opportunity for a hearing on a proposal to 
withdraw approval of the application under the procedure in Sec.  
314.200, Sec.  514.200, or both, as applicable, if FDA makes any of the 
following findings:
    <bullet> The applicant has failed to establish a system for 
maintaining required records, or has repeatedly or deliberately failed 
to maintain required records or to make required reports applicable to 
designated medical gases, including under sections 505(k) and 512(l) of 
the FD&C Act, part 230, and part 213, or that the applicant has refused 
to permit access to, or copying or verification of, its records;
    <bullet> On the basis of new information before FDA, evaluated 
together with the evidence available when the application was approved, 
the methods used in, or the facilities and controls used for, the 
manufacture, processing, and packing of the designated medical gas are 
inadequate to ensure and preserve its identity, strength, quality, and 
purity and were not made adequate within a reasonable time after 
receipt of written notice from the Agency;
    <bullet> On the basis of new information before FDA, evaluated 
together with the evidence available when the application was approved, 
the labeling of the designated medical gas, based on a fair evaluation 
of all material facts, is false or misleading in any particular, and 
the labeling was not corrected by the applicant within a reasonable 
time after receipt of written notice from the Agency; or
    <bullet> The applicant has failed to comply with the notice 
requirements of section 510(j)(2) of the FD&C Act (pertaining to the 
requirements regarding product listing updates).
    Section 576(a)(4)(A) of the FD&C Act makes clear that the authority 
to

[[Page 31327]]

withdraw or suspend approval under section 505(e) applies to designated 
medical gases that are deemed to have in effect approved applications 
under section 505 or 512. FDA believes the grounds proposed in Sec.  
230.150(a)(1) and (2) are consistent with the bases for withdrawing an 
application under section 505(e) of the FD&C Act.
    Under proposed Sec.  230.150(a)(3), FDA would also withdraw 
approval if the applicant requests its withdrawal because the 
designated medical gas subject to the application is no longer being 
marketed, provided none of the conditions listed in proposed paragraphs 
(a)(1) or (a)(2) applies. FDA proposes to consider such a written 
request for withdrawal to be a waiver of an opportunity for hearing 
otherwise provided for in this section. Such withdrawal, when requested 
by the applicant, would be without prejudice to refiling.
    Under proposed paragraph (a)(4), FDA could notify an applicant that 
it believes a potential problem associated with a designated medical 
gas is sufficiently serious that the designated medical gas should be 
removed from the market and may ask the applicant to waive the 
opportunity for hearing otherwise provided under this section, to 
permit FDA to withdraw approval, and to remove voluntarily the product 
from the market. If the applicant agrees, FDA would not make a finding 
under paragraph (a), but would withdraw approval in a notice published 
in the Federal Register that contains a brief summary of FDA's and the 
applicant's views of the reasons for withdrawal.
    Proposed paragraph (a)(5) provides that, if FDA withdraws an 
approval, the Agency will publish a notice in the Federal Register 
announcing the withdrawal of approval. This is consistent with the 
Agency's current practice to announce withdrawn approvals.
    Under proposed paragraph (b), FDA could revoke the grant of a 
certification if FDA determines, after providing the applicant with 
notice and opportunity for an informal hearing in accordance with 21 
CFR part 16, that the request for certification contains any material 
omission or falsification. This is intended to implement section 
576(a)(4)(B) of the FD&C Act. FDA proposes corresponding edits to 21 
CFR 16.1(b)(2) to include reference to this provision.
9. Proposed Changes to Part 314
    FDA proposes carving out designated medical gases from certain 
provisions in part 314 for which a corresponding provision specific to 
designated medical gases is proposed to be added to part 230. FDA also 
proposes carving out designated medical gases from certain provisions 
of part 314 that are not relevant to designated medical gases. Proposed 
new Sec.  314.1(c) (21 CFR 314.1(c)) would list the provisions that FDA 
proposes no longer apply to designated medical gases.
    A number of provisions in part 314 would continue to apply to 
designated medical gases.\7\ Section 314.80(g) (21 CFR 314.80(g)), 
regarding the electronic submission of safety reports, would continue 
to apply. FDA anticipates that the electronic format for submission of 
human drug individual case safety reports (ICSRs) will be the same as 
for other human drugs, and that existing guidance will be appropriate 
for human designated medical gas ICSRs.
---------------------------------------------------------------------------

    \7\ FDA has described its intention to issue a proposed rule 
that, among other things, would amend part 314 to modernize 
postmarketing safety reporting requirements for drugs (see RIN 0910-
AI61 on Fall 2021 Unified Agenda of Regulatory and Deregulatory 
Actions), and FDA intends to update proposed Sec.  314.1(c) to 
address any new or modified provisions added by that rulemaking that 
would not apply to designated medical gases.
---------------------------------------------------------------------------

    The following provisions in Sec.  314.81 (21 CFR 314.81) also would 
continue to apply:
    <bullet> Sec.  314.81(b)(3), which addresses submission of 
advertisements and promotional labeling, special reports upon written 
request from the Agency, notification of permanent discontinuance or an 
interruption in manufacturing, and the requirements for withdrawing an 
approved drug product from sale;
    <bullet> Sec.  314.81(c), which addresses submitting information 
related to multiple applications and patient identification 
requirements; and
    <bullet> Sec.  314.81(d), which authorizes FDA to withdraw approval 
of an application for failure to make reports required under Sec.  
314.81.
    FDA is not aware of any reason to exempt applicants from these 
requirements, though the Agency requests comment on the burden 
associated with complying with these provisions.
    Subparts E and G of part 314 would also continue to apply. FDA has 
not identified any reason to establish different requirements and 
procedures for hearings, imports and exports, drug master files, or 
public disclosure of Agency records related to designated medical 
gases.
10. Proposed Changes to Part 514
    Similarly, FDA proposes carving out designated medical gases from 
provisions in part 514 for which a provision specific to designated 
medical gases is proposed to be added to part 230. FDA also proposes 
carving out provisions that do not apply to certification requests for 
designated medical gases. Proposed revisions to Sec.  514.1(a) list the 
provisions that FDA proposes no longer apply to designated medical 
gases. FDA proposes that the data confidentiality requirements, hearing 
procedures, and judicial review process would continue to apply because 
FDA has not identified any reason to establish different procedures for 
designated medical gases. Within Sec.  514.80, FDA proposes revisions 
to the table and to paragraph (a) to further explain that NADAs for 
designated medical gases are not subject to the reporting requirements 
in Sec.  514.80 and are instead subject to part 230.

D. Proposed Postmarketing Quality and Safety Reporting Provisions

    Also within part 230, FDA proposes new postmarketing safety 
reporting requirements for designated medical gases.
1. Definitions
    Proposed Sec.  230.3(a) would incorporate relevant definitions from 
sections 201 and 575 of the FD&C Act. Additionally, FDA proposes 
several additional definitions in Sec.  230.3(b) related to 
postmarketing safety reports along with the definitions described in 
section V.C. above. FDA proposes to define ``adverse event'' to mean 
any untoward medical occurrence associated with the use of a designated 
medical gas in humans or animals, whether or not it is considered 
related to the designated medical gas. This would include adverse 
events occurring in the course of the use of a designated medical gas, 
adverse events occurring from overdose (whether accidental or 
intentional), adverse events occurring from abuse, adverse events 
occurring from discontinuation (such as physiological withdrawal), and 
any failure of expected pharmacological action.
    The proposed definitions of ``ICSR'' and ``ICSR attachments'' would 
be generally consistent with the definitions of those terms in Sec.  
314.80(a). FDA proposes to define ``ICSR'' to mean a description of an 
adverse event related to an individual patient or subject. The Agency 
proposes to define ``ICSR attachment'' to mean documents related to the 
adverse event described in an ICSR, such as medical records, hospital 
discharge summaries, or other documentation.
    FDA proposes to define ``life-threatening adverse event'' to mean 
any

[[Page 31328]]

adverse event that places the patient, in the view of the initial 
reporter, at immediate risk of death from the adverse event as it 
occurred. This term would not include an adverse event that, had it 
occurred in a more severe form, might have caused death.
    The proposed definition of ``minimum data set for an ICSR for an 
adverse event'' is generally consistent with the list of minimum data 
elements for a postmarketing ICSR described in the 2001 draft guidance 
for industry ``Postmarketing Safety Reporting for Human Drug and 
Biological Products Including Vaccines'' (Postmarketing Safety 
Reporting Draft Guidance) (Ref. 12). FDA proposes

[…truncated; see source link]
Indexed from Federal Register on May 23, 2022.

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