Arizona Healthcare Agent Responsibilities: What Your Agent Can and Cannot Decide

The Role Activates When You Can't Speak for Yourself

An Arizona healthcare agent's authority under a Durable Health Care Power of Attorney (A.R.S. § 36-3221) doesn't start the moment you sign the form. It activates only when your attending physician determines you lack decision-making capacity — meaning you can't understand your condition, the proposed treatments, or communicate a preference.

Once activated, your agent steps into your shoes for medical decisions. This isn't a passive role. Hospital staff will call your agent at 2 AM asking whether to intubate, whether to start dialysis, whether to transfer to the ICU. Your agent needs to understand both the legal scope and the practical reality of what they're agreeing to.

What Your Agent Can Decide

Arizona grants healthcare agents broad authority. Unless you specifically limit it in your HCPOA document, your agent can:

Consent to or refuse any medical treatment — including surgery, chemotherapy, blood transfusions, medication changes, and diagnostic procedures. This covers routine care and life-altering decisions alike.

Authorize or decline life-sustaining treatment — ventilators, CPR, tube feeding, dialysis, and artificial hydration. Your Living Will provides the guidance; your agent executes the decision when the clinical situation arises.

Choose healthcare providers and facilities — select or fire doctors, request transfer between hospitals, move you from acute care to skilled nursing or hospice. Your agent can override a facility's recommendation if they believe a different setting better serves your documented wishes.

Access your medical records — full HIPAA authority to review charts, test results, imaging, and consult with your medical team. This is essential for informed decision-making.

Authorize organ and tissue donation — unless you've separately documented your wishes with the Donor Network of Arizona, your agent can make this decision.

Make funeral, burial, or cremation arrangements — but only if you explicitly grant this authority in your HCPOA and the document is either notarized or signed by two witnesses (a higher execution threshold than the standard one-witness requirement).

What Your Agent Cannot Do

Arizona law imposes specific limits even on the broadest healthcare agency:

Cannot override a court-appointed guardian. Under A.R.S. § 36-3231, if a court has appointed a guardian specifically for healthcare decisions, that guardian takes priority over your named agent on any matter within the guardianship's scope.

Cannot authorize involuntary psychiatric admission unless you signed a separate Mental Health Care Power of Attorney (A.R.S. § 36-3282) and separately initialed the specific paragraph granting inpatient admission authority. A standard Healthcare POA does not cover psychiatric commitment — even if your agent has medical authority everywhere else.

Cannot make decisions when you have capacity. If you're conscious, oriented, and able to communicate, you make your own medical decisions regardless of what the document says. The agent's authority suspends whenever you regain capacity and reactivates if you lose it again.

Cannot override your known wishes. Your agent is legally obligated to follow your documented preferences and known values. They don't get to substitute their own judgment — they implement yours.

Cannot consent to experimental treatment outside of standard clinical practice unless the HCPOA explicitly authorizes it or you gave prior verbal consent.

The Practical Duties (What Most People Don't Prepare For)

Beyond legal authority, the agent role involves operational demands:

• Availability. Hospitals need decisions quickly. An agent who travels frequently or lives in another time zone may struggle with the timeline of ICU decisions.
• Documentation. Keep records of every conversation with medical staff, every decision made, and the reasoning behind it. If family members later challenge a decision, documentation protects the agent.
• Alternate agents. Your HCPOA should name at least one alternate. If your primary agent is unreachable, unavailable, or unwilling to serve, the alternate steps in without court intervention.
• Values briefing. The agent needs to know not just what you chose, but why — especially for scenarios your Living Will doesn't explicitly cover.

Choosing the Right Agent

The best healthcare agent isn't necessarily your closest family member. Look for someone who can advocate firmly under pressure, understands your values, and won't be paralyzed by guilt when difficult choices arise. A spouse who would "never be able to let go" may not serve you well in a comfort-care decision.

The Arizona Advance Directive & Living Will Kit includes an Agent Briefing Guide — a structured conversation tool that walks you and your chosen agent through the clinical scenarios they're most likely to face, so their first exposure to these decisions isn't in a hospital hallway.

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