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Living will requirements in Wyoming

Wyoming calls its directive the Advance Health Care Directive, and the law inside it holds two separate parts: your individual instruction and your power of attorney for health care. The instruction can be given orally or in writing with no witness or notary at all, but the power of attorney must be signed before two witnesses or a notary, either one. You must be 18, or an emancipated minor, to make either part.

State fact sheetWyoming
Document
Advance Health Care Directive
Agent document
Power of attorney for health care
Minimum age
18, with exceptions
Witnesses
2
Notary
Optional, in place of the witnesses
Your agent is called
agent
Pregnancy
The law says nothing
Statutes read: September 2026Read from primary statutes

Which document is this, really

Wyoming’s advance-directive law calls the whole document the Advance Health Care Directive. Inside that one law are two separate components: an individual instruction, which carries your treatment wishes, and a power of attorney for health care, which names the person who can decide for you. Wyoming leaves it up to you whether to put both in one document or keep them apart. Most people combine them, but the law itself does not require it.

There is no state-provided form for either part. A “Part 1 / Part 2” packet you may find online from a hospital or advocacy group is a private form, not something Wyoming’s statute prints or requires. You can use a packet like that, write your own, or use Myend’s Healthcare Directive, which is formatted to Wyoming’s actual signing rules rather than to that packet’s layout.

The two components are not signed the same way. The individual instruction has almost no formality at all. The power of attorney is the part that asks for witnesses or a notary. Knowing which half of the page you are signing matters more in Wyoming than in most states.

Who can make a Wyoming advance directive

Wyoming lets an adult, or an emancipated minor, make either component of the directive. The Act itself never defines “adult”, so that word points to Wyoming’s general age of majority, which is 18. An emancipated minor is a minor who has gone through Wyoming’s own emancipation process; a minor who has not is not covered here, whatever their circumstances.

Capacity is a practical, in-the-moment question rather than a diagnosis you need on file before you sign. It means you understand, at the time you sign, what your instruction or your power of attorney says and does, and what it means to name someone to decide for you.

Signing it so it counts

Wyoming’s two components are not signed the same way, and mixing them up is the easiest mistake to make with this document.

Your individual instruction

Your instruction about future treatment can be oral or written. Wyoming’s law asks for nothing else: no witness, no notary, no particular form of words. You can limit it to take effect only if a specific condition arises, and that limit is valid on its own terms.

An oral instruction is legally real in Wyoming, but nobody can act on words nobody remembers. Put it in writing, sign and date it, and give copies to your physician and the person you would want deciding for you, even though the law does not make you do any of that.

Your power of attorney for health care

  1. You sign

    You sign the power of attorney, or direct someone else to sign for you in your presence and at your direction.

  2. Two witnesses, or a notary

    Wyoming gives you an either-or choice. Have the document signed by at least two witnesses, or skip the witnesses and have it acknowledged before a notarial officer instead. Either route makes the power of attorney valid. A witness may watch you sign, or watch you acknowledge a signature or the document itself, and each witness has to make a declaration in substance that they declare under penalty of perjury under Wyoming law that the person who signed or acknowledged the document is known to them to be the principal, and that the principal signed or acknowledged it in their presence.

  3. If you use witnesses

    Neither witness can be a treating health care provider or their employee, the agent you are naming, or the operator or an employee of a community care facility or a residential care facility. Wyoming does not disqualify a witness simply for being related to you or for standing to inherit, which is unusual; most states do.

Principal
Witness one
Witness two

If you choose the notary route instead, the two witness lines are replaced by a single notary acknowledgment, and you do not need witnesses at all.

Naming your agent

The power of attorney for health care is where you name your agent, the person who can make health care decisions for you once your instruction or your agent’s authority takes effect. Wyoming’s eligibility rule is narrow: an owner, operator or employee of a residential or community care facility where you are receiving care cannot be your agent, unless that person is related to you by blood, marriage or adoption.

Notice what is not on that list. A treating health care provider cannot witness your power of attorney, but the law does not stop your own physician from being named your agent. The two rules protect against different risks, and Wyoming keeps them separate.

Your agent may make any health care decision you could have made yourself, following your directive and your other wishes so far as they know them, and your best interests, judged against your own values, where they do not. Absent a court order the other way, your agent’s decision takes precedence over a guardian’s. What no one gains under this Act is authority for mercy killing, assisted suicide or euthanasia, or for care that other Wyoming statutes prohibit.

When it takes effect

Unless your document says otherwise, your agent’s authority begins the moment your primary physician determines that you lack the capacity to make your own health care decisions, and it ends the moment your primary physician determines that capacity has come back. Until that happens you are presumed to have capacity: Wyoming keeps that presumption in place unless the primary physician has certified in writing that you lack it. The same physician makes the call on any condition you attached to your individual instruction. If your primary physician is not available, your treating primary health care provider can make that determination instead.

Wyoming asks for one clinician’s determination, not two. Some states build in a second physician to confirm the first before an agent can act; Wyoming does not.

If you are pregnant

Wyoming’s Health Care Decisions Act says nothing about pregnancy. The word does not appear anywhere in the Act, and a search of the surrounding chapters of Title 35 turns up nothing that applies here either. That means your instruction and your power of attorney apply exactly as written, pregnant or not; nothing in Wyoming’s advance-directive law sets them aside or changes them.

Wyoming’s older Living Will Act, a different law that covered some of the same ground, was repealed in full in 2005. What replaced it, the Health Care Decisions Act now in force, was written without a pregnancy provision of its own. Nothing was carved out of the current law, because the current law never had a pregnancy clause to begin with.

Changing or cancelling it

Wyoming treats the two components differently here too. You can revoke your individual instruction at any time, in any manner that shows you mean to revoke it, as long as you still have capacity; an oral revocation should be put into a signed, dated writing as soon afterward as possible. Anyone told about a revocation has to pass the word to your primary health care provider and to any institution treating you.

Revoking your agent’s appointment is stricter. It takes a signed writing, and nothing else counts, even though you still need capacity to do it. A divorce, annulment, or legal separation automatically revokes a spouse named as agent, unless your document says otherwise. Signing a later directive that conflicts with an earlier one revokes the earlier one, but only to the extent the two actually conflict.

Making sure it is found

Give a copy of whichever parts you signed to your agent, your physician, and the hospital you are most likely to use, and keep the original where your family knows to look. An instruction or a power of attorney nobody can find when it matters works no better than one that was never signed.

A card in your wallet that says the document exists, and where the original is kept, closes most of the gap that a state registry would otherwise fill.

This is not a POLST

Wyoming has a second statute for this, the Provider Orders for Life Sustaining Treatment Program Act, which sets up the state’s POLST program and has the Department of Health prescribe a standardized POLST form and publish it for downloading. The program is commonly called WyoPOLST. It is a different kind of document from your Advance Health Care Directive: a POLST form turns a seriously ill patient’s goals into medical orders, signed by the primary health care provider who discussed them with the patient, and it is meant to be complied with across care settings, hospital, nursing facility, home and ambulance alike. Your directive, by contrast, is something you put in place in advance, before any of that is happening. Myend prepares the Advance Health Care Directive. It does not, and cannot, produce a POLST, because that has to come from a treating clinician.

If the orders on a POLST form conflict with an advance directive you made, Wyoming does not rank one document above the other. Whichever of the two you signed most recently takes precedence.

What is different about Wyoming

Wyoming lets you give your treatment instructions out loud, with no witness in the room, and still asks for two witnesses or a notary the moment you name an agent.

Most states treat the whole advance directive as one signing event. Wyoming splits it in two. Your individual instruction, the part that says what care you do and do not want, can be oral, can be written with no witness in sight, and is still a real instruction under the law. Your power of attorney for health care, the part that hands decisions to another person, gets the state’s ordinary formality: two witnesses or a notary, and a short list of people who cannot stand in as either. The split is not an oversight; the Act defines the two pieces separately and gives each its own execution rule.

Wyoming’s law is also quiet about pregnancy. The Living Will Act that once covered some of this ground was repealed outright in 2005, and the law that replaced it never wrote pregnancy back in. There is no viability test, no physician certification, and no automatic pause on your directive; it simply applies as written.

One more quiet difference: Wyoming asks a single physician to decide when your agent’s authority starts and stops. Where other states build in a second doctor’s sign-off, Wyoming does not.

Common questions

Does a Wyoming advance directive have to be notarized?
Not for your individual instruction, which needs neither a notary nor a witness and can even be spoken rather than written. Your power of attorney for health care is different. Wyoming lets you choose between two witnesses or a notary, but one of the two is required.
What is the difference between my individual instruction and my power of attorney for health care?
Your individual instruction says what treatment you do and do not want. Your power of attorney for health care names the agent who decides for you when you cannot. Wyoming lets you put both in one document, but the Act treats them as two separate legal acts with two separate signing rules.
How many witnesses does Wyoming require, and who cannot be one?
Your individual instruction needs none. Your power of attorney for health care needs two witnesses, unless you use a notary instead. Neither witness can be your treating health care provider or an employee of that provider, the person you are naming as agent, or the operator or an employee of a community care facility or a residential care facility. That last bar is not limited to the facility caring for you, unlike the rule about who may be your agent.
Who can be my agent in Wyoming, and what can they decide?
Almost anyone you trust and name in your power of attorney for health care. Wyoming disqualifies only an owner, operator or employee of a residential or community care facility where you are receiving care, unless that person is related to you by blood, marriage or adoption. Once your agent’s authority takes effect, they can make the health care decisions your document gives them power to make.
Is a Wyoming advance directive the same as a POLST form?
No. Your Advance Health Care Directive is something you put in place ahead of time, in case you cannot speak for yourself later. A POLST form comes from a second Wyoming statute, the Provider Orders for Life Sustaining Treatment Program Act: the Department of Health prescribes the form, and a primary health care provider signs it as medical orders after discussing the patient’s goals with them, for someone already facing serious illness. The program is commonly called WyoPOLST. Where the two documents conflict, whichever you signed most recently wins. Myend prepares the directive. It cannot issue a POLST, since that has to come from your treating clinician.
When does my agent actually get to start deciding for me?
Once your primary physician determines you lack the capacity to make your own health care decisions, unless your document sets a different trigger. The same physician’s determination also applies to any condition you attached to your individual instruction. If your primary physician is not available, your treating primary health care provider can make that call instead.
Can I change or cancel my Wyoming advance directive?
Yes, but the two parts work differently. You can revoke your individual instruction at any time, in any way that shows you mean it, as long as you still have capacity. Revoking your agent’s appointment takes a signed writing, nothing less.
Do I need a lawyer to make an advance directive in Wyoming?
No. Wyoming does not require an attorney for either the individual instruction or the power of attorney for health care. Myend’s Healthcare Directive prepares both, formatted to Wyoming’s rules, at no cost.

Sources and review

Legal sources
  • Wyo. Stat. Ann. § 35-22-402(a)(i); § 35-22-403The name of Wyoming's directive, and its two components: an individual instruction and a power of attorney for health care
  • Wyo. Stat. Ann. § 35-22-402(a)(xiii); § 35-22-403(b)The power of attorney for health care: naming an agent to make health care decisions
  • Wyo. Stat. Ann. §§ 35-22-401 to 35-22-416 (no statutory form; cf. § 35-22-403(b), witness declaration in substance)Wyoming's Health Care Decisions Act provides no state form
  • Wyo. Stat. Ann. § 35-22-403(a)The individual instruction: may be given orally or in writing, with no witness or notary required
  • Wyo. Stat. Ann. § 35-22-403(b)The power of attorney for health care: signing before two witnesses or a notary, either one
  • Wyo. Stat. Ann. § 35-22-403(c)Who cannot serve as a witness to the power of attorney for health care
  • Wyo. Stat. Ann. § 35-22-402(a)(ii)The term "agent" defined
  • Wyo. Stat. Ann. § 35-22-403(d), (e); § 35-22-402(a)(iv), (xiv), (xv)When an agent's authority begins and ends, and who determines capacity
  • Wyo. Stat. Ann. §§ 35-22-401 to 35-22-416 (no pregnancy provision); former Living Will Act §§ 35-22-101 to 35-22-109 repealed by Laws 2005, ch. 161, § 3Wyoming's advance-directive law does not mention pregnancy; the earlier Living Will Act that preceded it was repealed
  • Wyo. Stat. Ann. § 35-22-404How to revoke your instruction, and separately, how to revoke your agent's appointment
  • Wyo. Stat. Ann. § 35-22-403(a), (b); § 35-22-402(a)(vi); W.S. § 14-1-101(a)Who may sign: an adult or emancipated minor, and Wyoming's age of majority
  • Wyo. Stat. Ann. Sec. 35-22-501, 35-22-502, 35-22-504, 35-22-505(g)Wyoming's POLST program, the Department of Health's standardized form, and which document wins when a POLST and a directive conflict
  • Wyo. Stat. Ann. Sec. 35-22-403(b)The declaration under penalty of perjury each witness to the power of attorney must make
  • Wyo. Stat. Ann. Sec. 35-22-412(b)The presumption of capacity, which stands until the primary physician certifies otherwise in writing
  • Wyo. Stat. Ann. Sec. 35-22-403(f); Sec. 35-22-407(b); Sec. 35-22-414(c)How an agent must decide, that an agent outranks a guardian, and what the Act does not authorize

Read from primary statutes, September 2026. General information, not legal or medical advice.

Other states that relax the signing rules

Wyoming lets you skip witnesses entirely for your instructions, and lets a notary stand in for witnesses on your power of attorney. These states relax the signing rules in their own ways.

Your Wyoming healthcare directive, ready to sign

Myend prepares an advance directive formatted to Wyoming's requirements. Free to start, and yours to download on the $19 Starter plan when you are done.

Read how to make a living will online before you start.