Arizona Health Care Power of Attorney: How to Appoint Your Medical Decision-Maker

Why Arizona Requires a Separate Healthcare POA

Arizona does not use a single "advance directive" document that handles everything. Under A.R.S. § 36-3221, the state requires a standalone Durable Health Care Power of Attorney to designate someone who can make medical decisions when you cannot speak for yourself. Your treatment preferences go in a separate Living Will, and psychiatric care authority requires yet another document — the Mental Health Care Power of Attorney.

This separation trips up families constantly. A signed Living Will does not give anyone authority to talk to doctors on your behalf. Without a properly executed HCPOA, decisions default to Arizona's statutory surrogate hierarchy — a rigid priority list that may not match your wishes at all.

Who Can Serve as Your Healthcare Agent

Your designated agent must be an adult of sound mind. Arizona law disqualifies any person whose professional fiduciary license has been suspended or revoked, unless they are related to you by blood, adoption, or marriage.

Beyond legal eligibility, choose someone who understands your values around quality of life, can handle high-pressure hospital conversations, and lives close enough (or is willing to travel quickly) to be present during a crisis. Name at least one alternate agent in case your primary is unavailable.

Executing the Document Correctly

The HCPOA must be in writing, dated, and signed by you in the presence of either a notary public or at least one adult witness. Arizona's witness exclusion rules are strict:

• The witness cannot be the person you are naming as your agent
• They cannot be directly involved in providing your healthcare
• If you use only one witness (instead of a notary), that witness also cannot be related to you by blood, marriage, or adoption, and cannot be entitled to any portion of your estate

Using your spouse or adult child as your sole witness is the single most common reason Arizona HCPOAs are challenged or invalidated.

Granting Funeral and Burial Authority

If you want your healthcare agent to also handle funeral, burial, or cremation decisions after your death, Arizona law requires additional execution formalities. The document must be either notarized or signed by two witnesses — not one. Many families miss this requirement, leaving funeral decisions in limbo.

What Happens Without One

Without a valid HCPOA, Arizona defaults to a statutory surrogate list: spouse first, then adult children, then parents, then domestic partner, then siblings. If your adult children disagree about your care, the hospital cannot follow any single child's instructions without court intervention. Guardianship proceedings cost thousands of dollars and take weeks — time a patient in a medical crisis does not have.

Registering Your HCPOA with the State

Once executed, submit a copy to the Arizona Healthcare Directives Registry (AzHDR) operated by Contexture. This ensures any hospital or emergency department in Arizona can retrieve your document electronically 24/7. You will receive a wallet card with your registry access credentials.

The Arizona Attorney General's office distributes blank HCPOA forms for free, but does not accept, store, or file them. Filing happens through Contexture — a distinction that confuses many families.

Next Steps

A Healthcare Power of Attorney is one piece of Arizona's multi-document advance planning system. You also need a Living Will for treatment instructions and should consider a Mental Health POA if psychiatric authority matters to you. The Arizona Advance Directive & Living Will Kit walks you through all three documents with witness audit checklists to prevent the execution mistakes that invalidate thousands of Arizona directives every year.

See more Arizona guides →