Oklahoma Living Wills and
Advance Directives

An Oklahoma advance directive lets you decide now about life sustaining treatment and name the person who’ll speak for you if you can’t. Oklahoma’s statutory form combines three parts in one document: a living will, the appointment of a health care proxy, and your organ and tissue donation choices.

Most people search for a form. The harder parts are the decisions inside it, the signing rules, and how it fits with your will, trust, and powers of attorney. This guide covers those, plus a major change: Oklahoma has passed a new health care decisions law that takes effect July 1, 2027.

Table of Contents

• What an Oklahoma Advance Directive Is
• Advance Directive vs. Powers of Attorney
• The Living Will Decisions
• Tube Feeding and IV Fluids: Oklahoma’s Special Rules
• Signing Requirements: Witnesses and Notarization
• When It Takes Effect and How to Revoke It
• Out of State Directives
• DNR Consent Forms and POLST
• HIPAA Authorizations
• Choosing a Proxy and Talking With Family
• What Happens Without One
• Oklahoma’s New Health Care Decisions Law
• How It Fits With Your Will, Trust, and Powers of Attorney
• Oklahoma Specific Considerations
• Frequently Asked Questions
• Decide Now, While the Choice Is Yours

What an Oklahoma Advance Directive Is

The National Institute on Aging describes advance directives as legal documents that provide instructions for medical care that apply only when you can’t communicate your wishes. In Oklahoma, the term also has a specific meaning: a document signed under the Oklahoma Advance Directive Act, which can contain a living will, the appointment of a health care proxy, or both.

The Oklahoma State Department of Health posts the statutory advance directive form, and under Oklahoma law a directive may substantially follow that form. Other forms can be valid, but see the tube feeding rule below. Its parts are:

• The living will: your instructions about life sustaining treatment, and about tube feeding and IV fluids, in a terminal condition, persistent unconsciousness, or an end stage condition.
• The health care proxy: the adult you name, plus an alternate, to make health care decisions consistent with your living will once you can’t.
• Anatomical gifts: whether you want to donate organs, tissues, or your whole body, and for what purposes.
• General provisions: rules for the whole document, including a pregnancy rule and a statement that it stays in effect until you revoke it.

Advance Directive vs. Powers of Attorney

People often mix up the advance directive, the durable power of attorney for health care, and the financial power of attorney. Oklahoma’s health care power of attorney comes from the Oklahoma Health Care Agent Act, signed in 2022. Capitol Beat OK reported that it filled a gap left when Oklahoma updated its Durable Power of Attorney Act. For about six months, from November 2021 to April 2022, Oklahoma law had no direct authorization for a health care power of attorney. The lesson for families: a financial power of attorney isn’t a medical document.

The key limit: under Oklahoma law, a health care power of attorney can’t authorize your agent to withhold or withdraw life sustaining treatment, nutrition, or hydration except in compliance with the Advance Directive Act, though it can authorize a DNR consent. So the two documents work as a pair: the power of attorney handles everyday medical decisions, and the advance directive handles end of life treatment. Our guide to powers of attorney in Oklahoma covers the financial side.

The Living Will Decisions

The living will applies only in three conditions the statute defines, so the definitions control when your instructions apply.

• Terminal condition: incurable and irreversible, and likely to cause death within six months even with life sustaining treatment, in the opinion of your attending physician and another physician.
• Persistently unconscious: an irreversible condition, determined by your attending physician and another physician, in which thought and awareness of self and environment are absent.
• End stage condition: caused by injury, disease, or illness, with severe and permanent deterioration, incompetency, and complete physical dependency, where treatment would be medically ineffective.

For each condition, you decide whether you want life sustaining treatment and, separately, whether you want tube feeding and IV fluids if you can’t take food and water by mouth. The choices can differ from one condition to the next.

Your instructions don’t take away comfort care. Under Oklahoma law, even when life sustaining treatment or artificial nutrition and hydration are withheld, you still receive treatment to relieve pain and are still provided food and water by mouth. And if your attending physician knows you’re pregnant, Oklahoma law requires life sustaining treatment and artificial nutrition and hydration unless you’ve specifically authorized otherwise, in your own words, for pregnancy.

Tube Feeding and IV Fluids: Oklahoma’s Special Rules

Oklahoma treats artificial nutrition and hydration differently from other treatment. Under Oklahoma law, every incompetent patient is presumed to have directed his or her providers to provide nutrition and hydration sufficient to sustain life. The presumption gives way only in limited situations, such as when:

• Your attending physician knows you made an informed decision, while competent, to refuse it
• A court finds clear and convincing evidence that you made that decision
• You signed an advance directive that specifically authorizes withholding or withdrawing it
• Two physicians agree it would cause severe pain that can’t be relieved, or that it’s medically impossible
• Two physicians agree you’re chronically and irreversibly incompetent, in the final stage of a terminal illness or injury, and that death is imminent, unless death would then result from starvation or dehydration rather than the underlying condition

A signed directive is the cleanest way to make your choice known. INTEGRIS Health’s patient registration page tells patients a living will is “the only document that allows the withholding or withdrawal of nutrition and hydration.” Under Oklahoma law, tube feeding can be withheld in a few other narrow situations, but a living will is the only document that lets you make that choice yourself, in advance.

The new law keeps this front and center. According to the Oklahoma House announcement of its signing, it provides that food and liquids necessary to sustain life may not be withheld unless the patient specifically directs otherwise in an advance directive.

Signing Requirements: Witnesses and Notarization

Under current Oklahoma law, the person signing must be of sound mind and 18 or older. The directive must be signed by you and by two witnesses who are at least 18 and who aren’t legatees, devisees, or heirs at law.

In plain English, a witness shouldn’t be anyone named to receive property in your will or anyone who would inherit from you if you had no will. That usually rules out your spouse, your children, and other close relatives. Our guide to what happens if there is no will in Oklahoma explains who counts as an heir.

Is Notarization Required?

No. The Advance Directive Act requires two qualified witnesses, and a notary can’t substitute for them. A health care power of attorney is different: it can be signed before a notary or two qualified witnesses. Some people add a notary acknowledgment to the directive too, since it may need to work in a state with different rules. That’s a judgment to make with counsel.

Capacity matters too. A directive signed after dementia sets in may be challenged later, so sign while everyone is healthy.

When It Takes Effect and How to Revoke It

Signing doesn’t hand over any decisions. As long as you can make decisions about life sustaining treatment, you make them. Under Oklahoma law, the directive becomes operative when it’s been communicated to your attending physician and you’re no longer able to make those decisions. You become a “qualified patient” only after your attending physician and another physician examine you and determine that you can’t make an informed health care decision.

Your proxy must then follow your known intentions, personal views, and best interests, using reasonable judgment about your values when your wishes aren’t clear. If you’ve signed more than one valid directive, the most recent controls. If a provider won’t follow your directive, Oklahoma law requires it to take all reasonable steps, as promptly as practicable, to arrange care with a provider who will, and in the meantime to follow a decision whose denial would likely cause death.

Copies and Revocation

Under Oklahoma law, a provider who receives the original or a photocopy must make it part of your medical record, so give copies to your doctors and proxy. Keep the original where your proxy can reach it.

You can revoke an Oklahoma advance directive, in whole or in part, at any time and in any manner, without regard to your mental or physical condition. The revocation takes effect when you, or someone who witnessed it, communicates it to your attending physician or another provider. Because copies are valid, collect or replace the ones you handed out.

Out of State Directives

Under Oklahoma law, a directive signed in another state is valid here if it was signed in compliance with that state’s law or Oklahoma’s, but only to the extent it doesn’t go beyond what Oklahoma law allows.

The nutrition caution applies here too. An out of state directive doesn’t authorize withholding artificial nutrition and hydration unless it specifically does so, and if you lived in Oklahoma when you signed it, that choice must also appear in a separately initialed, signed, or marked section. If you’ve moved here, the safer course is usually to sign a new Oklahoma directive and revoke the old one, after counsel compares them.

DNR Consent Forms and POLST

A Living Will Isn’t a DNR

A living will gives instructions for defined conditions that two physicians have confirmed. A do not resuscitate consent is narrower: it’s about CPR. Under Oklahoma law, every person is presumed to consent to CPR unless an exception applies, such as a signed DNR consent form.

Oklahoma’s statutory DNR form covers only the measures used to restart the heart or breathing, such as chest compressions, artificial ventilation, intubation, defibrillation, and emergency cardiac drugs. Comfort care and oxygen continue. The form is signed by the person or a representative and witnessed by two people who are 18 or older and aren’t legatees, devisees, or heirs at law. It lists the representatives who can sign as a health care agent, a health care proxy, or a guardian.

POLST in Oklahoma

A POLST (Physician Orders for Life Sustaining Treatment) is a medical order, not an advance directive. The National Institute on Aging explains that POLST forms are usually created during a serious illness or near the end of life, and that clinicians can act on them right away. Oklahoma adopted a standardized POLST format by statute in 2016 and amended it in 2022. It covers CPR, the level of medical intervention, antibiotics, and nutrition, states that it’s voluntary, and should be reviewed at least annually. The National POLST Collaborative’s Oklahoma program page lists the state program as OkPOLST.

HIPAA Authorizations

Your proxy can’t help much if doctors won’t talk to that person. HHS explains that someone with legal authority to make your health care decisions, such as a health care agent, is generally treated as your personal representative for information related to that authority. Providers may share information with family and friends involved in your care in many situations, but generally aren’t required to.

The gap is timing. Most health care powers take effect only when a physician determines you can’t decide, so before then your daughter calling from Tulsa may not get answers. AARP’s guide to the documents adult children need describes a HIPAA authorization as written permission for named people to access your medical information, which you can limit and revoke, and notes that having both a proxy and an authorization can help avoid delays.

Choosing a Proxy and Talking With Family

Your proxy must be at least 18. Beyond that, the choice is a judgment call worth taking slowly. Look for:

• Willingness to follow your wishes, even when they differ from the proxy’s own
• Steadiness under pressure, with doctors and with relatives who disagree
• Availability, or the ability to manage well from a distance
• A real conversation about your values, not just trust with money

The best proxy isn’t always the oldest child or your executor, because the skills differ. Our guide to choosing an executor in Oklahoma covers the estate side. Name an alternate, too. A sole proxy may be sick, traveling, or unwilling when the time comes.

One Oklahoma restriction: under the Health Care Agent Act, a health care agent generally can’t be an owner, operator, or employee of a residential long term care facility where you’re receiving care, unless related to you by blood, marriage, or adoption.

Then talk with your family. The Conversation Project, an initiative of the nonprofit Institute for Healthcare Improvement, offers free guides for starting the conversation and choosing a proxy. Tell your family who you’ve named, why, and where the documents are.

What Happens Without One

If you can’t communicate and have no directive or health care agent, Oklahoma law sets a priority list of people who may make health care decisions for an adult who is persistently unconscious, incompetent, or otherwise unable to communicate:

1. A guardian with authority over medical decisions
2. A health care proxy or alternate you named
3. An agent under a health care power of attorney
4. Your spouse
5. Your adult children
6. Your parents
7. Your adult siblings
8. Other adult relatives, in order of kinship
9. A close friend who knows your personal values

Within a class, such as several adult children, a majority may decide. The person acting must be reasonably available and willing, and must sign a statement for the medical record confirming he or she isn’t disqualified by certain abuse, neglect, or exploitation convictions, charges, or findings.

This list helps, but it has gaps. Your spouse can’t sign an advance directive for you. The presumption in favor of nutrition and hydration still applies. The statutory DNR form doesn’t list a spouse or child as a representative unless that person is also your agent, proxy, or guardian. And when relatives disagree, the people closest to you may be the ones in conflict.

Oklahoma’s New Health Care Decisions Law

In May 2026, Oklahoma enacted House Bill 1687, the Uniform Health Care Decisions Act of 2026. The bill’s House author, Rep. Cynthia Roe, called it the state’s first major update to its advance directive laws since the 1990s, and a later ceremonial signing announcement confirms it takes effect July 1, 2027. According to those announcements, the new law:

• Allows advance health care directives, including directives that address mental health care
• Presumes people have capacity to make or revoke health care decisions unless a court finds otherwise or qualified medical professionals properly rebut it
• Bars withholding food and liquids necessary to sustain life unless the patient specifically directs otherwise

The act replaces both the Advance Directive Act and the Health Care Agent Act with one framework. Under the enrolled bill, a directive created before July 1, 2027 stays valid if it complies with the new act or complied, when it was made, with the law of the state where it was made. Its detailed signing rules and form deserve a careful read before anyone relies on them, which is why a review after the effective date makes sense.

How It Fits With Your Will, Trust, and Powers of Attorney

An advance directive covers your medical care. It doesn’t touch your property. AARP’s list of estate planning documents every family should have includes an advance directive, a health care power of attorney, a revocable living trust, a will, and a durable financial power of attorney.

• Your will says who receives your property at death and who serves as executor.
• A revocable trust lets a successor trustee manage trust property if you’re incapacitated and distribute it at death without probate. See our revocable trusts guide and our post on successor trustees.
• A financial power of attorney lets your agent handle property outside the trust while you’re alive.
• TODDs and beneficiary designations move specific property at death. Our guide to avoiding probate in Oklahoma explains how these fit.

The documents should work together. If your son is successor trustee and your daughter is proxy, they need to know it and be able to cooperate. Business owners have one more layer: someone has to run the company while you’re in the hospital, which our guide to succession planning for family businesses addresses.

Oklahoma Specific Considerations

For Oklahoma County and Oklahoma City metro families, these documents get tested at the admissions desk, in the ICU, and in nursing homes from Edmond to Norman. A directive works best when it’s signed correctly, on file, and backed by a proxy who knows what you want. Our Oklahoma estate planning attorneys prepare advance directives and health care powers of attorney as part of a coordinated plan.

Hospital Admissions in the Metro

Oklahoma’s Medicaid rules, posted by the Oklahoma Health Care Authority, require hospitals, nursing facilities, home health agencies, and hospices to give adult Medicaid patients written information about their right to sign advance directives and to record whether the patient has one. INTEGRIS Health lists four kinds Oklahoma recognizes: a living will, a health care proxy, a durable power of attorney for health care, and a DNR consent. Whether you’re admitted to OU Health, INTEGRIS Health, Mercy, or SSM Health St. Anthony, bring copies.

State Form, Registries, and Organ Donation

The State Department of Health posts the statutory form and lists one registry service, MyDirectives, while stating that it doesn’t endorse registries. For organ donation, News 9 reports that Oklahomans can register with LifeShare of Oklahoma online or at a driver’s license visit, and that under Oklahoma’s first person consent law, registration means family permission isn’t required. Keep your directive and registration consistent.

Families Spread Across Counties and States

Many metro families have a parent in Oklahoma, Canadian, Cleveland, or Logan County and children in Tulsa, Dallas, or Denver. Distance is a reason to name a proxy and an alternate who can actually act, sign HIPAA authorizations for out of town children, and keep copies where a local relative can reach them. If your documents were signed years ago, before the 2022 Health Care Agent Act, or in another state, have them reviewed.

Frequently Asked Questions

• Does an Oklahoma advance directive need to be notarized?

  No. Under current law, you and two witnesses who are 18 or older and aren’t legatees, devisees, or heirs at law sign it. A notary can’t replace the witnesses. A health care power of attorney can be notarized or witnessed.

• Is a living will the same as a DNR?

  No. A living will covers life sustaining treatment in three defined conditions. A DNR consent covers only CPR if your heart or breathing stops.

• Can my spouse make medical decisions without one?

  Often, yes. Oklahoma law lists a spouse fourth, after a guardian, a named proxy, and a health care agent. But that authority has limits, including the presumption in favor of tube feeding and IV fluids, and disputes can end up in court.

• Does Oklahoma recognize my out of state living will?

  Generally, yes, if it complied with that state’s law or Oklahoma’s, to the extent it doesn’t go beyond what Oklahoma allows. Tube feeding choices must be specifically addressed, so many newcomers sign a new Oklahoma directive.

• Who can’t witness an Oklahoma advance directive?

  Anyone under 18, and any legatee, devisee, or heir at law. That usually rules out your spouse, children, close relatives, and anyone named in your will.

• When does an Oklahoma advance directive take effect?

  When your attending physician has it and you can no longer make decisions about life sustaining treatment, as determined by your attending physician and another physician.

• How do I revoke a living will in Oklahoma?

  At any time and in any manner, regardless of your condition. It takes effect when communicated to your attending physician or another provider. Collect the copies you handed out.

• Is a health care power of attorney the same as an advance directive?

  No. A health care power of attorney covers broad medical decisions, but under current law it can’t authorize withholding life sustaining treatment, nutrition, or hydration outside the Advance Directive Act. Most people need both.

• Is a copy of my advance directive valid?

  Yes. A provider who receives the original or a photocopy must make it part of your medical record.

• Is Oklahoma changing its advance directive law?

  Yes. The Uniform Health Care Decisions Act of 2026 takes effect July 1, 2027. Current law applies until then, so plan a review afterward.

Decide Now, While the Choice Is Yours

An Oklahoma advance directive is a short document with long consequences. It works only if it’s signed correctly, makes the tube feeding choices clearly, and is backed by a proxy, an alternate, and a HIPAA authorization.

Sign one while you’re healthy, alongside your will, trust, and powers of attorney, and look at it again after the new law arrives in July 2027. Good next reads are our guides to powers of attorney and living trusts in Oklahoma.

Disclaimer: This article provides general information about Oklahoma advance directives, living wills, and related health care documents and is not legal or medical advice. Oklahoma’s health care decisions laws are changing, with a new law taking effect July 1, 2027, and every family’s situation turns on its own facts. For guidance on your specific situation, consult qualified Oklahoma counsel, and talk with your physician about your medical choices.

About Cantrell Law Firm: We are an Oklahoma City and Edmond business, estate, and oil and gas law firm. As former entrepreneurs, we help families plan their estates with wills, trusts, powers of attorney, and health care documents, so the people they trust can act when it matters and property can pass to the next generation. Learn more about our estate planning practice. Contact us to discuss your family’s situation.