If you are not married and cannot speak for yourself, the question of who makes medical decisions when you are not married is answered by your state’s default surrogate hierarchy, and that hierarchy almost always picks a blood relative: adult children first, then parents, then adult siblings. An unmarried partner, a close friend, or a chosen family member usually has no legal standing at all unless you sign documents in advance naming them. The fix is a healthcare power of attorney, and it takes far less time and money to create than the alternative.
The Default Rule When You Have No Documents
Hospitals and courts rely on a statutory priority list often called “next of kin” when an incapacitated patient has left no instructions. For an unmarried adult, the typical order runs adult children, then parents, then adult siblings. Some states continue down to grandchildren, grandparents, aunts and uncles, or a “close friend” category. Others stop at siblings and send the matter to court if none are available.
A long-term partner is invisible under many of these hierarchies. A growing number of states include registered domestic partners or people in civil unions at or near the top, and a handful recognize a close friend. But roughly a dozen states treat anyone who is not a blood or legal relative as a stranger with no authority to make medical choices, and even in the more generous states an unregistered partner may not qualify. Assume your partner has no standing unless you have explicitly granted it.
The hierarchy also gets messy when people share the same priority level. Three adult children who cannot agree can deadlock a treatment decision. Many facilities follow the majority view among available same-priority relatives; an even split can push the matter to a hospital ethics committee or to court. Either path adds delay at exactly the wrong moment.
Naming Your Own Decision-Maker
The single most important document for an unmarried person is a healthcare power of attorney, sometimes called a healthcare proxy or medical power of attorney. It lets you name anyone you trust as your “agent” to make medical decisions when you cannot. That person does not have to be a relative. They do not need to live in your state. They need to understand your values and be willing to advocate for your wishes under pressure.
Federal law already requires every hospital that accepts Medicare to ask whether you have an advance directive and to inform you of your right to create one.1Office of the Law Revision Counsel. 42 USC 1395cc – Agreements With Providers of Services Being asked at admission is too late. Complete the document while you are healthy and can actually talk it through with the person you are naming.
Name at least one alternate agent in case your first choice is unavailable or unwilling when the moment comes. You will need each person’s full legal name, current address, and phone number. The conversation with them matters more than the paperwork; an agent who has never discussed your preferences with you is flying blind.
Writing Down What You Want
A healthcare power of attorney names who decides. A living will, also called an advance directive, spells out what you want. It records your preferences on treatments like mechanical ventilation, artificial nutrition and hydration, and palliative care if you are terminally ill or permanently unconscious. It guides both your agent and your medical team, and it matters most when your agent faces a decision the two of you never specifically discussed.
Filling out a living will forces you to think through questions most people avoid: whether you want aggressive treatment in every scenario, at what point comfort becomes the priority, and whether organ donation aligns with your values. There are no right answers. The document reflects your personal beliefs, not a medical recommendation.
If You Are Seriously Ill: POLST
A POLST form (Physician Orders for Life-Sustaining Treatment, known by different names in different states) is a medical order signed by both you and your physician. Emergency medical personnel can follow a POLST immediately. They generally cannot follow a living will in the field because a living will is not a physician’s order. POLST forms are designed for people who are seriously ill or frail and cover specific treatments like CPR, intubation, antibiotics, and feeding tubes. If you are young and healthy, a healthcare power of attorney and living will are enough. If you have a serious diagnosis, ask your doctor whether a POLST makes sense on top of your other directives.
Visitation and Access to Your Medical Information
Decision-making authority and the right to sit at your bedside are separate issues. Under federal regulations that took effect in 2011, every hospital participating in Medicare or Medicaid must let patients designate any visitor they choose, including a domestic partner, friend, or anyone else, and may not restrict visitation based on the visitor’s relationship to the patient.2eCFR. 42 CFR 482.13 – Condition of Participation: Patient’s Rights If you are conscious, you tell the hospital who you want in the room. The problem arises when you cannot speak and your partner is not your legal surrogate.
Access to your medical information runs on a different track. Under HIPAA, a provider generally cannot share your protected health information with anyone, including a partner, without your written authorization. You can sign a HIPAA authorization naming specific people who are permitted to receive your medical information, and that authorization remains in effect whether or not you are incapacitated.3eCFR. 45 CFR 164.508 – Uses and Disclosures for Which an Authorization Is Required Signing one takes five minutes. Ask your doctor’s office for the form at your next visit.
Signing Rules That Make the Documents Valid
A healthcare power of attorney or living will that is not properly signed is just a piece of paper. Every state has execution requirements, and cutting corners here can invalidate the whole document. Most states require two qualified witnesses to watch you sign. Some require notarization instead, and a few require both. Using your state’s official form or your state bar association’s guidance is the easiest way to get the formalities right.
Witness disqualifications are stricter than people expect. In most states, the following cannot serve as your witness:
- The agent you named as your healthcare decision-maker
- Anyone related to you by blood, marriage, or adoption
- Your doctor, nurse, or employees of the facility where you receive care
- Anyone who stands to inherit from your estate
You and both witnesses, or you and the notary, should sign at the same time and in each other’s presence. Mismatched dates or a witness who signed later can create enough doubt to trigger a challenge.
Distributing, Storing, and Updating
After signing, give copies to your agent, your alternate agents, and your primary care physician. If you use specialists, provide copies to each one. Hospitals are required to document in your medical record whether you have an advance directive, so making sure it is on file avoids a scramble during admission.1Office of the Law Revision Counsel. 42 USC 1395cc – Agreements With Providers of Services
Several states maintain digital advance directive registries. Private registries, like the U.S. Advance Care Plan Registry, serve the same function nationwide. Registries are especially useful if you become incapacitated while traveling, since a doctor in another state can pull up your documents electronically.
Most states honor advance directives executed elsewhere, but not all do. If you split time between states, move often, or travel a lot, execute directives that comply with each state where you spend significant time. Widely used forms like Five Wishes are designed to meet the requirements of most states.
You can revoke your directives at any time. Common methods include signing a new directive that contradicts the old one, physically destroying the old document, writing a dated revocation statement, or telling your doctor orally that you revoke it. The revocation only counts if it reaches your providers and your agent. Review your directives after any major life change: a new relationship, a breakup, a serious diagnosis, or a move. Some states automatically revoke certain designations if you marry.
What Happens If You Skip All This
If you become incapacitated with no directives and no qualifying next of kin, or if family members at the same priority level are locked in a dispute the hospital cannot resolve, the decision goes to court. A judge holds a hearing and appoints a guardian (or conservator, depending on the state) to make medical and potentially financial decisions on your behalf.
This is the most expensive and least private option. Attorney fees for a guardianship petition commonly run from several thousand dollars up, and court filing fees, investigator fees, and fees for a court-appointed attorney to represent you stack on top. The proceedings become part of the public record. A permanent guardianship can take months to establish, and the person ultimately appointed may be a professional guardian who has never met you or your family. For an unmarried adult especially, where the default hierarchy may not put the right person in charge, the cost of a healthcare power of attorney is trivial compared to the cost of skipping one.