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How do I create an advance healthcare directive in Texas?

Federal & State Law Editorial TeamLast reviewed: 2026-05-18

1. Types Recognized

Texas recognizes four instruments under Health & Safety Code Ch. 166: (a) Directive to Physicians and Family or Surrogates (§ 166.033 — the living will), (b) Medical Power of Attorney (§ 166.164), (c) Out-of-Hospital Do-Not-Resuscitate Order (§ 166.081 et seq.), and (d) the Texas MOST (Medical Orders for Scope of Treatment).

2. Statutory Form

The Directive to Physicians statutory form is in § 166.033. The Medical Power of Attorney form is in § 166.164. Substantial compliance suffices, but use of the statutory form removes most challenges.

3. Execution Formalities

Declarant must be 18+ (or emancipated) and competent. The Directive to Physicians requires either (a) two qualified adult witnesses OR (b) acknowledgment before a notary public. Witness 1 cannot be: the agent, related by blood/marriage, an heir or beneficiary, the attending physician or employee, or anyone with a claim against the estate (§ 166.003). Witness 2 has no disqualifications.

4. Healthcare Agent Authority

Under § 166.152, the agent may make any healthcare decision the principal could make, becoming effective when the attending physician certifies in writing the principal lacks capacity. Agent may consent to or refuse life-sustaining treatment and artificial nutrition/hydration.

5. Pregnancy Clauses

Tex. Health & Safety Code § 166.049 PROHIBITS withdrawal/withholding of life-sustaining treatment from a pregnant patient. This provision remains in force post-Dobbs and has been the subject of litigation (e.g., Munoz case).

6. Reciprocity

Section 166.005 honors directives validly executed in other jurisdictions.

7. MOST/DNR

The Out-of-Hospital DNR (§ 166.082) and MOST forms are physician-signed orders portable across settings.

8. Revocation

Under §§ 166.042 and 166.155, revocable at any time by any means showing intent — oral, written, destruction — regardless of mental state.

9. Default Surrogate

Section 166.039 provides a hierarchy: spouse > reasonably available adult child (consensus) > parent > nearest living relative — to make life-sustaining decisions when no MPOA exists.

This is legal information, not legal advice.

When to Talk to a Lawyer
  • Pregnant patients wanting to override § 166.049 pregnancy exclusion
  • Disputes over invocation of TADA 10-day rule for treatment withdrawal
  • Family disagreement over agent's decisions or surrogate hierarchy
Related Statutes & Laws
  • Tex. Health & Safety Code Ch. 166 (Advance Directives Act)
  • Tex. Health & Safety Code § 166.049 (pregnancy)
  • Tex. Health & Safety Code § 166.039 (surrogate)

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.