Washington Healthcare Power of Attorney

A Healthcare Power of Attorney (HPOA) is a legal document in which you, called the principal, designate another person, called your agent, to make medical decisions on your behalf when you are unable to make or communicate them yourself. In Washington State, this document is governed primarily by the Health Care Decisions Act, codified under RCW 70.122 and RCW 11.125.

Unlike a Financial Power of Attorney, which manages money and property, a HPOA is exclusively concerned with the decisions that will be made over your medical decisions, including obtaining records. It allows someone to fill in for you and assist making, or take over making, medical decisions for you based on the instructions and guidance written in your created document.

A HPOA can work alongside, or be combined with, an Advance Directive (sometimes called a Living Will) to form a complete picture of your healthcare wishes. Together, they are the most powerful voice you can leave behind to either assist you in medical care while able, or unable, to speak for yourself.

What You Need to Know

Washington's Healthcare Decisions Act and the Uniform Power of Attorney Act (RCW 11.125) together define how healthcare decisions can be delegated and honored in this state. Both statutes reflect a foundational principle of Washington law: competent adults have the right to make their own healthcare decisions, including the right to refuse any treatment (RCW 70.122.030).

Document Requirements

Capacity: The principal must be an adult (18 or older) with the mental capacity to understand the nature and effect of the document at the time of signing.

Signature: The document must be signed and dated by the principal, or by another person at the principal's direction if the principal is physically unable to sign.

Witnesses: Washington requires two qualified witnesses or a notary public. Witnesses cannot be the named healthcare agent, a relative by blood or marriage, anyone entitled to a portion of the estate, the attending physician, or an employee of a healthcare facility in which the principal is a patient.

No Healthcare Provider as Agent: The principal's attending physician or any employee of that physician's practice cannot serve as the healthcare agent, unless they are related to the principal.

Scope of Authority

Unless the document limits authority, a Washington HPOA grants the agent broad power to make any healthcare decision the principal could have made. Under RCW 11.125.400, this includes the authority to:

• Consent to, refuse, or withdraw any medical treatment, procedure, or intervention

• Hire and dismiss healthcare providers

• Request transfers between facilities

• Access medical records and communicate with healthcare providers

• Make decisions about organ and tissue donation

• Authorize or decline autopsy

When Does the Agent's Authority Activate?

A Healthcare Power of Attorney doesn't hand your agent any power the moment it's signed. In most cases, your agent can only step in after a doctor, or in some cases two medical professionals, formally determines that you are no longer able to make or communicate your own healthcare decisions. Until that happens, you remain fully in charge of your own care.

Some POA documents are written differently. They may specify a particular date, event, or condition that triggers the agent's authority, and if that trigger occurs, the agent's powers become active at that point instead. This date could be the time of signing, making the document immediate, rather than a springing power of attorney.

Either way, it's important to understand what this actually means: your rights are never taken away. Think of it less like handing someone the wheel and more like adding a co-pilot. Your agent's authority runs alongside yours. If you regain your capacity, revoke the document, or if the document itself spells out when it ends, your agent's role ends with it. The only other thing that permanently closes the door is your passing.

Important Distinction: A HPOA does not mean you give up control of your healthcare decisions. It is a contingency plan. Your agent only has the authority you designate

What Medical Decisions Can Your Agent Make?

The scope of a HPOA is able to be deliberately broad, because medical crises rarely follow a predictable script. Here is a plain-language overview of the decisions your agent can be authorized to make:

Acute and Emergency Medical Care

Consenting to emergency surgery or invasive procedures
Authorizing blood transfusions and blood products
Approving or declining resuscitation
Making decisions about mechanical ventilation and life support

Long-Term and Chronic Care

Selecting between treatment plans recommended by physicians
Consenting to or refusing chemotherapy, radiation, dialysis, or other ongoing treatments
Authorizing placement in a skilled nursing facility, memory care, or rehabilitation center
Managing medication regimens, including psychoactive or pain management drugs

End-of-Life Decisions

Directing withdrawal of life-sustaining treatment when continued treatment would be futile or contrary to your wishes
Authorizing comfort care and palliative or hospice services
Communicating your wishes about dying at home versus in a medical facility
Directing the level of pain management, including decisions that may secondarily hasten death when made in good faith for comfort purposes

Mental Health Treatment

Washington law distinguishes mental health treatment decisions from general healthcare decisions. A HPOA may address mental health treatment, but Washington also has a separate instrument called a Mental Health Advance Directive (MHAD), which is specifically designed to record your mental health treatment preferences in advance. If mental health care is a concern, both documents may be appropriate.

Who Needs a Healthcare Power of Attorney? (Everyone.)

Healthcare crises do not check your age, your health history, or your schedule before arriving. An HPOA is not only a document for the dying, it is a document for the living who want to stay in control of what happens to their bodies.

Young Adults (Ages 18–35)

The day you turn 18, your parents lose any automatic legal authority over your medical care. In an emergency, like a car accident, a sports injury, a sudden illness, the hospital cannot discuss your condition with your parents or accept their decisions unless you have executed an HPOA or provided their information on the HIPPA form.

College students: A HPOA naming a parent ensures someone who knows you and loves you can make decisions in an emergency, not a stranger appointed by a court.
Military service members: Deployment or combat injury can create medical situations that cannot wait for a court proceeding. A HPOA is especially critical for service members, particularly those with faith-based treatment preferences.
Young adults with disabilities or chronic conditions: A HPOA ensures that healthcare decisions align with the individual's own values and preferences, not assumed family consensus.

Caregivers, Families, and the Decision-Making Hierarchy

When someone lacks both a HPOA and the capacity to make decisions, Washington law establishes a default priority list for surrogate decision-makers under RCW 7.70.065. This list determines who speaks for an incapacitated patient in the absence of a document:

Guardian of the person, if one has been appointed by a court
Spouse or state-registered domestic partner
Adult children
Parents
Adult siblings
Adult grandchildren
Adult nieces and nephews
Close friend
The patient's attending physician in limited circumstances

This hierarchy sounds orderly on paper. In practice, it can be chaotic. Family members at the same priority level must attempt to reach consensus. Conflicts between adult children, between a surviving spouse and stepchildren, or between a partner and a parent can delay critical decisions and cause irreparable harm to both relationships and outcomes.

A HPOA bypasses this hierarchy entirely. The person you name, and the successor selections, come first. This ensures continuity of planning.

The Advance Directive: Your HPOA's Essential Partner

An Advance Healthcare Directive (also called a Living Will) is a document that records your own healthcare preferences directly. It explicitly states what treatments you want, what you do not want, and under what circumstances. In Washington, Advance Directives are governed by RCW 70.122.

While a HPOA names who decides, an Advance Healthcare Directive records what you want decided. Together, they eliminate ambiguity and give your agent the clearest possible guidance. Without an Advance Healthcare Directive, your agent must make judgment calls based on conversations and assumptions. With one, they are executing your documented instructions, allowing everyone to have peace of mind that your values and beliefs are respected.

How Cornerstone Legal PLLC Can Help

At Cornerstone Legal PLLC, we understand that healthcare planning is not a purely legal exercise. It touches your deepest values, your most important relationships, and your most personal beliefs about life, death, and dignity. We approach every HPOA engagement with that understanding.

Our HPOA services for Washington State clients include:

Consultation to understand your specific healthcare concerns, family circumstances, and faith or ethical values
Drafting a Washington-compliant HPOA tailored to your preferences, including specific faith-based treatment instructions
Coordination with your Advance Directive, POLST, and complete estate plan
Planning for families with a member who has cognitive or developmental disabilities
Review and update of existing HPOAs that may be outdated, vague, or legally deficient
Coordination with your physician where POLST alignment is needed

Your voice in the hospital room does not disappear the moment you lose consciousness, not if you have planned ahead. Contact Cornerstone Legal PLLC today to schedule your consultation and make sure the people you trust are legally empowered to speak for you.