The Health Care Decisions Act is the legal framework, adopted in some form by nearly every state, that lets you document your medical treatment preferences and name someone to decide for you if you can’t speak for yourself. It’s built on the Uniform Health Care Decisions Act, a model law first approved by the Uniform Law Commission in 1993 and substantially revised in 2023. Two documents do most of the work under the Act: a living will, which records your instructions, and a health care power of attorney, which names a person to act on them. Signed correctly, they keep your family out of court and give doctors clear authority to follow your wishes.
The Two Documents the Act Gives You
A living will spells out your instructions for specific medical situations, mostly end-of-life scenarios. It addresses whether you want mechanical ventilation, CPR, or artificial nutrition if you’re diagnosed with a terminal condition or enter a state where recovery isn’t reasonably expected. A living will only takes effect after a physician determines you lack the capacity to make your own decisions.
A health care power of attorney does something a living will can’t: it puts a real person in charge. You designate a trusted individual, sometimes called an agent or proxy, who gains legal authority to consent to or refuse treatments based on your known values. Where the living will covers only the scenarios you anticipated, your agent can respond to situations nobody predicted. Together the two documents handle the full range of medical decisions, from surgical consent to end-of-life care. They also protect health care providers from liability when they follow the documented instructions in good faith.
What to Include in Your Directive
Most states offer standardized advance directive forms through their health departments, and several nonprofit organizations provide free, state-specific templates. You don’t need a lawyer to complete one, though consulting an attorney can help if your situation is complicated.
At minimum, your directive should cover:
- Your full legal name, address, and contact information, along with the same details for anyone you’re naming as your agent or alternate agent.
- Your treatment preferences for scenarios like terminal illness, permanent unconsciousness, and advanced dementia. Most forms ask specifically about CPR, mechanical ventilation, artificial nutrition and hydration through feeding tubes, and dialysis.
- Your goals and values, not just specific procedures. The 2023 model form encourages you to describe what matters most to you: comfort, independence, religious beliefs, quality of life versus length of life. These broader statements give your agent guidance for situations the form didn’t anticipate.
- Organ and tissue donation preferences, if you have them.
- Any religious or cultural requirements that should guide your care.
Vague language is where these documents fail. Writing “no heroic measures” means different things to different doctors. Specifying that you do not want CPR if you have an irreversible condition, but do want it attempted if there’s a reasonable chance of meaningful recovery, gives providers something they can actually follow. The more concrete your instructions, the less room for disagreement among family members or medical staff.
Choosing a Health Care Agent
Your choice of agent matters more than most people realize. Pick someone who can absorb complex medical information under pressure and carry out choices you’ve discussed, even when those choices are emotionally wrenching. The best agents aren’t always the people closest to you; they’re the ones who will follow your wishes rather than substitute their own.
The law bars certain people from serving. In most states, the owner or operator of the facility where you’re receiving care, your supervising health care provider, and employees of that facility cannot act as your agent. Some states carve out exceptions for facility employees related to you by blood or marriage. Name at least one alternate in case your first choice is unavailable, unwilling, or unable to serve when the time comes.
Your agent’s authority typically activates only after a health care professional determines you lack capacity to make your own decisions. The 2023 model act modernized how that determination works: it focuses on whether you can functionally understand and communicate a decision, considers whether you could make the decision with support, and expands the types of health care professionals who can assess capacity beyond just physicians.
Limits on What Your Agent Can Decide
Naming an agent doesn’t hand over unlimited authority. Many states require court approval before a surrogate or guardian can consent to certain high-stakes procedures, including sterilization, abortion, psychosurgery, organ removal, and experimental treatments. A significant number of states also restrict a surrogate’s ability to consent to withholding or withdrawing life-sustaining treatment unless you’ve specifically addressed that in your directive.
The 2023 revision addresses this head-on: an agent only has authority over controversial decisions if the power of attorney explicitly grants it. If you want your agent to have broad authority, including the ability to make end-of-life decisions, say so in the document. Silence on a controversial topic usually means your agent doesn’t have that power.
Signing and Witness Requirements
A completed form isn’t legally enforceable until you follow your state’s execution requirements. Most states require two adult witnesses who watch you sign and then confirm in writing that you appeared mentally competent and signed voluntarily. Witness restrictions vary, but common disqualifications include:
- Your named health care agent.
- Your attending physician or employees of the facility providing your care.
- Close relatives, including spouses and blood relatives, in some states.
- Anyone who stands to inherit from your estate.
- Anyone financially responsible for your medical bills.
Some states accept notarization instead of or in addition to witnesses. A handful now allow remote witnessing of health care powers of attorney, a change the 2023 model act specifically endorses. If you split time between states or might receive care far from home, having both witnesses and notarization strengthens the document’s validity no matter where you end up. Failing to follow the witness rules can void the entire document, which means your carefully considered instructions would carry no legal weight.
After You Sign: Distribution, Storage, and Record Access
The signing ceremony is only useful if the right people can find the document when it matters. Give copies to your primary care physician, your named agent, and any close family members who would be involved in a medical crisis. Hospitals can scan the directive into your electronic medical record for immediate access during an emergency.
Some states maintain voluntary registries where you can file a digital copy. Keep the original in a place that’s both safe and accessible, like a home file or a fireproof document box. A bank safe deposit box is a poor choice because your agent may not have access when they need it most. Most states treat a clear photocopy as equivalent to the original unless there’s evidence you revoked the document.
Federal law backs this up from the hospital side. Under the Patient Self-Determination Act, every hospital, nursing facility, hospice, and HMO that participates in Medicare or Medicaid must give you written information about your right to create an advance directive, ask whether you already have one, and document the answer in your medical record. They cannot condition your care on whether you have a directive or discriminate against you either way.1Office of the Law Revision Counsel. 42 U.S. Code 1395cc – Agreements With Providers of Services
A related question catches many families off guard: can your agent actually see your medical records? Under HIPAA, a person authorized as your agent under a health care power of attorney has the same rights to your records that you would have. That access kicks in when the directive takes effect, which in most states means after you’ve been determined to lack capacity. In states where the power of attorney can be immediately effective, your agent’s access begins as soon as the document is signed. A provider that refuses to share records with an authorized agent is violating the HIPAA Privacy Rule, unless the provider reasonably believes you’ve been subjected to abuse by that person or that sharing would endanger you.2National Library of Medicine. HIPAA and Caregivers’ Access to Information
Changing or Revoking Your Directive
You can revoke your directive at any time, as long as you still have the mental capacity to do so. States generally recognize several methods:
- A signed and dated written statement of revocation.
- Oral revocation. Telling your health care provider directly. Most states require the provider to document the revocation in your medical record, often with a witness present.
- Physically destroying the document by tearing, shredding, or otherwise.
- Executing a new directive, which generally supersedes an earlier one.
Revoking the agent designation specifically, as opposed to the whole directive, usually must be done in writing or by personally informing your supervising health care provider. An offhand comment to a family member may not legally revoke the appointment. After any revocation, the responsibility falls on you to notify everyone who has a copy: your agent, your doctor, the hospital, and any state registry where you filed the document. A revocation nobody knows about is a revocation nobody follows.
Rather than making piecemeal amendments, most estate planners recommend executing an entirely new document when your preferences change. This avoids confusion about which instructions control. Review your directive every few years, and revisit it after any major life event like a divorce, a new diagnosis, or the death of your named agent.
What Happens If You Have No Directive
If you become incapacitated without a directive, the Act doesn’t leave your family without options, but the options are worse. Most states establish a default surrogate hierarchy, typically in this order: legal guardian, spouse or domestic partner, adult children, parents, and then adult siblings. The 2023 model act expanded this list to reflect a wider range of relationships and family structures. Your default surrogate has authority to make medical decisions on your behalf, provided those decisions align with your best interests or, if known, your previously expressed wishes.
The problem is that default surrogate laws only work when the family agrees. When relatives disagree about treatment, and they frequently do, the fallback is a court-supervised guardianship proceeding. Guardianship is expensive, slow, and adversarial. Filing fees alone typically run several hundred dollars, and attorney fees for even an uncontested case can reach a few thousand dollars. Contested cases cost far more and drag on while your medical situation may be deteriorating. A $150 to $750 advance directive is cheap insurance against a process that can cost ten times as much and take weeks or months to resolve.
Recognition Across State Lines
Most states recognize directives executed in another state. The typical rule is that an out-of-state directive is valid if it was properly executed under the law of the state where you signed it, or if it meets the requirements of the state where you’re now receiving treatment. In practice, a directive signed correctly in one state will usually be honored elsewhere.
“Usually” isn’t “always.” States have adopted their own variations of the model act, and some states’ forms include provisions or terminology that don’t map neatly onto another state’s law. If you spend significant time in more than one state, execute a directive that complies with the requirements of each state where you’re likely to receive care. At minimum, make sure your document is both witnessed and notarized, since that combination satisfies the execution requirements of virtually every jurisdiction.
When a Standard Directive Isn’t Enough
A standard advance directive covers most people, but two situations call for something more. Emergency medical technicians generally cannot honor a standard directive or health care power of attorney at the scene; they’re trained to stabilize first and let a physician review your documents later. If you have a serious illness or advanced frailty and want first responders to follow specific limits on resuscitation and intubation, you need a POLST form (Physician Orders for Life-Sustaining Treatment, though the name varies by state). A POLST is a set of medical orders signed by a health care provider, and because it carries the weight of an order, EMTs can act on it immediately. It doesn’t replace an advance directive and it doesn’t name a surrogate; more than 40 states now have codified POLST programs.
The 2023 revision of the model act also explicitly authorizes advance directives written exclusively for mental health care, and about half the states have enacted specific psychiatric advance directive statutes. These let you record preferences for psychiatric treatment, consent to voluntary admission in advance, list preferred and refused medications, and name an agent for mental health decisions. Some states let you limit your own ability to revoke the psychiatric directive during an acute episode, which addresses the reality that a person in a severe crisis may refuse treatment they previously wanted.