Health Care Proxy vs Power of Attorney: Which Does a Parent Need?

Most parents need both. A health care proxy (also called a health care power of attorney or medical power of attorney) names someone to make medical decisions when your parent can't. A durable financial power of attorney names someone to handle money, bills and property. Neither one covers the other's job, and they usually switch on at different moments.

The confusion is mostly about names. "Power of attorney" is a family of documents, and the medical one goes by half a dozen titles depending on the state.

The two documents side by side

Rules vary by state, so read this as the typical pattern. Sources are linked below.

Why the names are such a mess

Every state writes its own law here, and nobody coordinated the vocabulary. The terms you'll see:

• Health care proxy. Used in New York, among others. Confusingly, "proxy" can mean the document or the person named in it.
• Health care power of attorney, medical power of attorney, durable power of attorney for health care. The same idea under different labels. The National Institute on Aging uses "durable power of attorney for health care" for the document and says the person it names may be called a proxy, representative, surrogate or agent.
• Health care agent. The person named, in most modern forms.
• Durable power of attorney with no other words. Almost always the financial one. "Durable" just means it keeps working after the person loses capacity.
• Living will. Written instructions about treatment, not the naming of a person.
• Advance directive. The umbrella term for the living will and the health care power of attorney, separately or on one form.

A few real state labels for the medical document: New York calls it a Health Care Proxy. Texas has a Medical Power of Attorney. California folds it into Part 1 of its Advance Health Care Directive, the statutory form in Probate Code section 4701. Florida calls it a designation of a health care surrogate. Michigan calls the person a patient advocate. Same job, five names.

The Uniform Law Commission, which drafts model laws for states to adopt, tried to clean this up. Its 2023 Uniform Health-Care Decisions Act uses "power of attorney for health care," and the official comment says plainly that "in some states, this document is referred to as a health care proxy" and that it "is distinct from a power of attorney for finances." The financial side has its own model law, the Uniform Power of Attorney Act from 2006, which expressly leaves health care decisions out. Both are models. A model act becomes law only in a state that passes it, and the 2023 health care act is new enough that you shouldn't assume your parent's state has it. Your parent's own state statute is what counts.

When each one actually starts working

This is where families get surprised.

The health care proxy usually waits

A health care agent normally can't make decisions while your parent still can. New York's form puts it in one line: the agent "will start making decisions for you when your doctor determines that you are not able to make health care decisions for yourself." The same form says that while your parent can decide, treatment can't be given or stopped over their objection, and that when they recover the ability, the agent "will no longer be authorized to act."

Some states let your parent choose. California's statutory form says the agent's authority starts when the primary physician determines your parent can't decide, unless they check a box making it take effect immediately. Florida's statute lets a person make the surrogate's authority to get health information, make decisions, or both exercisable immediately, without a finding of incapacity.

The 2023 model act takes a middle road, worth knowing about even if your parent's state hasn't adopted it. Under its Section 18, decision-making power starts only when your parent is found to lack capacity, but the document can make the agent's right to get medical information start right away. The drafters' comment explains why: an agent with information can help a parent who is still deciding for themselves, and can tell when the time to step in has actually come.

What this means on an ordinary Tuesday: if Dad is sharp but worn out from calling the cardiologist, the proxy probably gives you no authority yet. He can still bring you to appointments and tell his doctors they may talk with you. A signed HIPAA authorization, or an "immediately effective" clause where the state form allows one, puts that in writing.

The financial power of attorney often starts right away

Under Section 109 of the Uniform Power of Attorney Act, the model many states have used for their own laws, a power of attorney "is effective when executed" unless it says it starts later or on some event. A version that waits for incapacity is called a springing power of attorney. If it doesn't name who decides that your parent is incapacitated, the model act requires a written determination, from a physician or licensed psychologist for example.

Springing documents sound gentler. The catch: the agent has to prove the trigger happened, usually with a doctor's letter, and a bank will typically want to see that before it lets the agent act. The model act's comment says its immediate-effect default reflects the idea that anyone trustworthy enough to hold a springing power "should be trustworthy enough" to hold one that's effective now.

The same act makes a power of attorney durable by default, meaning it survives incapacity unless it says otherwise. Older documents and states that haven't adopted the act may still need the word "durable" or similar language. Ask the attorney who drafted it.

What each agent can do, and where they overlap

The health care agent decides about treatment. Depending on the state and the document, that can include choosing doctors and facilities, consenting to or refusing treatment, and decisions about life support. NIA's list of common responsibilities includes deciding on care and where it happens, and overseeing medical records. New York's form is blunt about the limit: it "does not give your agent the power to make non-health care decisions for you, such as financial decisions."

The financial agent handles money. Under the uniform act, a document that grants general authority over "personal and family maintenance" covers paying for necessary health care and custodial care. So the medical agent picks the rehab facility, and the financial agent pays it.

They meet in a few places:

• Paying medical bills. The uniform act lets the financial agent act as a HIPAA personal representative for decisions about paying for care, but not for making the care decisions. Whether that piece is in your parent's state law is a question for a lawyer.
• Insurance applications. The 2023 model health care act lets a health care agent apply for public or private health insurance and benefits if no one else, such as a financial agent, is authorized to. That only matters where a state has adopted it.
• Moving to a care home. Choosing the placement is a care decision. Signing the admission contract and paying is a money decision. Both agents end up at the table.
• Disagreements. Neither one simply outranks the other. Section 114 of the uniform power of attorney act says that, unless the document says otherwise, the financial agent must cooperate with the person who has authority to make health care decisions, to carry out what your parent would reasonably expect.

The financial power of attorney has its own blind spot: Social Security and VA benefits don't run through it. Our guide to representative payee vs power of attorney covers why.

If your parent has only one, or neither

No health care agent. Many states have a default surrogate law that ranks family members. In New York, the Family Health Care Decisions Act list runs: spouse (if not legally separated) or domestic partner, then an adult son or daughter, then a parent, then an adult brother or sister, then a close friend. In Texas, for a patient who can't communicate and is in a hospital or nursing home or served by a home and community support services agency, Health and Safety Code section 313.004 lists the spouse, adult children, parents, then the nearest living relative, and says the surrogate's consent must be based on what the patient would want, if known. Texas also sends any fight over who gets to be surrogate to a court.

These lists pick by relationship, not by who your parent trusts. The child who lives nearby and knows Mom's wishes has no more say than the sibling who hasn't visited in years, unless Mom puts her name on a proxy.

No financial agent. In most states there's no family default for money. Without a power of attorney, families are left with narrow tools like a Social Security payee, or a court guardianship or conservatorship. Our guide for when a parent can't make decisions and has no power of attorney walks through the options in order.

Has one but not the other. Common, and fixable if your parent can still understand and sign. The National Institute on Aging notes that financial documents must be created while the person still has the legal capacity to make decisions. A parent who did a health care proxy at the hospital during a surgery may never have done the money side.

Can the same person hold both?

Generally yes, and many families do it. One person who knows the whole picture can make the medical call and arrange the payment.

Reasons to split it anyway:

• The sibling who's calm in a hospital hallway isn't always the one who reconciles a checkbook.
• One person carrying both jobs through a long illness is a lot.
• Splitting can be a check on each other, or a source of friction. You know your family.

A few rules to know. New York's form says a doctor named as agent has to choose between acting as agent and acting as the attending doctor. NIA, citing American Bar Association guidance, suggests generally not naming the parent's own health care provider, the owner or operator of their care facility, or someone who already serves as proxy for 10 or more people. And the uniform act's comment notes a consensus among experts that the financial and medical powers are best kept in separate documents, even when the same person holds both.

Name a backup on each one. New York's form explains that without an alternate, if the agent is unavailable, providers make decisions that follow the instructions your parent gave while able to, including anything written on the form.

Where HIPAA fits

Under federal privacy rules, someone with authority to make health care decisions is treated as the patient. HHS says it directly: if a person can make health care decisions for you using a health care power of attorney, the person is your personal representative.

A financial power of attorney is different. HHS says a power of attorney that doesn't include health care decisions would not authorize the holder to exercise your parent's rights under the HIPAA Privacy Rule.

And because many health care proxies only start at incapacity, you can be the named agent and still get "we can't discuss that" while your parent is capable. That's why a separate release helps. Our HIPAA authorization guide covers what doctors can already share and how to set up the form.

What sits next to these two

Two more documents get mixed into this conversation:

• A living will says what treatment your parent would want. The proxy says who decides. Many state forms combine them, and the uniform act's comment calls putting them together "typically advisable" because the agent should be guided by the instructions. Your parent's state form is in our guide to advance directive forms by state.
• A POLST is a medical order for someone seriously ill or frail, signed by a clinician, that paramedics can follow. It isn't a proxy or a power of attorney. See what a POLST form is.

Read what your parent already has

Pull out every document with "power of attorney," "proxy," "agent," "surrogate," "advocate" or "directive" on it, and for each one check:

• The title, and whether it covers health care, money, or both
• Who is named, and whether there's an alternate
• When it takes effect: on signing, on a doctor's determination, or on another event
• Whether the financial one says "durable" or says it survives incapacity
• The state it was signed in, and the date
• Any limits written in, such as no authority over feeding tubes or the house
• Whether it grants access to medical information, and when
• Where the original is, and who has copies

If the medical one is missing, the financial one is missing, or the named agent has died or moved away, that's your to-do list.

Frequently asked questions

Is a health care proxy the same as a power of attorney?

It's one kind of power of attorney: the medical kind. When people say "power of attorney" alone, they usually mean the financial one, which can't make medical decisions. Your parent needs a document for each job, or one carefully drafted to cover both.

Who has more authority, the health care proxy or the power of attorney?

Neither. Each has authority only in its own lane. Where they overlap, such as paying for care the medical agent chose, the uniform power of attorney act (where a state has adopted it) tells the financial agent to cooperate with the health care decision maker.

Does a health care proxy expire?

Usually not, unless the document sets an end date. It stops being usable if your parent revokes it, and in New York naming a spouse who later divorces or legally separates ends that spouse's authority unless the form says otherwise. NIA suggests reviewing advance directives at least once a year.

Can I make medical decisions for my parent with a financial power of attorney?

No. A power of attorney limited to money doesn't give medical decision authority or HIPAA access. In many states, a default surrogate law may still let you decide as next of kin, but your place in line depends on the state's list.

Does my parent need a lawyer for both?

Not always for the medical one. New York's form says you don't need a lawyer or a notary, just two adult witnesses. Many families use a lawyer for the financial one, since banks can be picky about its wording. An elder law attorney can do both at once and check they fit together.

Keeping track of who's who

Once the papers exist, the next problem is finding them: which sibling is the agent, which drawer holds the original, which doctor has a copy. The checklist above fits on one page. Or Emergency Binder Now can put it together from about 25 minutes of guided questions, as a printable binder with pages that record whether each legal document exists, where it's kept and who holds it, plus a list of what's still missing. You can see a sample binder first.

This article is general information, not legal or medical advice. Health care decision and power of attorney laws differ by state and change over time. For your parent's documents, talk with an elder law attorney in their state.