Can a Guardian Make Medical Decisions?

When a loved one can no longer make their own health care choices, families in Snohomish County often ask a hard question: does the person appointed to help actually have the authority to say yes or no to medical treatment? The short answer is usually yes, but that authority has real limits.

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What a Guardian Is Allowed to Decide

In Washington, a guardian appointed for an adult is given a defined set of powers by the court, and health care sits squarely within them. The law that spells this out is the guardianship statute, chapter 11.130 RCW. Under RCW 11.130.330, unless the court order says otherwise, a guardian for an adult may consent to health or other care, treatment, or service for the person, and may receive that person's personal health care information. That last point matters in practice, because a hospital or doctor's office will often ask for proof that the guardian has the right to see records and speak on the adult's behalf.

So in the ordinary course, a guardian can authorize routine and necessary medical care: consenting to a procedure, approving a treatment plan, arranging follow-up care, and coordinating with providers. The court's letters of guardianship are what a hospital will typically want to see, because those letters describe the specific powers the guardian was actually granted.

The Authority Is Not Unlimited

A guardian is not a substitute decision-maker with a blank check. Washington law builds in several boundaries. The first is the court order itself. A guardianship in this state is meant to be tailored to what the person actually needs, so the order may grant full health care authority, or it may limit it. Always start with what the specific order says.

The second boundary is that certain decisions are treated as too significant to rest on the guardian's authority alone. Under RCW 11.130.330, some choices require a separate, specific order from the court before the guardian can act. That includes consenting to the adoption of the adult, and, where the adult's rights in these areas have been addressed by the court, decisions touching on marriage or on filing for or responding to a divorce. The statute frames these as powers the court must expressly authorize, which is the legislature's way of saying they are not automatic.

There is also a firm limit on confinement. RCW 11.130.330 provides that no care facility may detain a person against their will, and any court order that purports to let a guardian consent to that kind of involuntary detention is void, except where the separate involuntary treatment laws apply. In plain terms, a guardianship is not a tool for locking someone away, and Washington law says so directly.

The Person-Centered Standard Behind Every Decision

Even where a guardian clearly has medical authority, Washington does not let the guardian simply decide whatever they personally think is best. The statute requires a person-centered approach. Under RCW 11.130.325, a guardian is a fiduciary who owes the highest duty of good faith and care, and the guardian may not substitute their own moral, religious, or philosophical values for those of the person under guardianship. The guardian is required to promote the person's self-determination and, to the extent reasonably possible, involve the person in decisions about their own care.

The health care provisions carry the same theme. RCW 11.130.330 directs a guardian making health care decisions to involve the adult in the decision to the extent feasible, including helping them understand the risks and benefits when practical, to defer to any agent the adult named under a power of attorney for health care, and to take into account both the treatment options and the adult's own current and past wishes and values. This is the difference between deciding for someone and deciding as that someone would have decided. Washington law asks the guardian to reconstruct the choice the adult would make if able, and to fall back on the adult's best interest only when that cannot be determined, a standard laid out in RCW 11.130.325.

Why an Existing Health Care Directive Still Matters

One point families in Snohomish County frequently miss: a guardianship does not erase a health care power of attorney the person signed earlier. The statute tells a guardian to defer to the health care agent's decisions and to cooperate with that agent. Good planning done in advance, through a health care directive or a durable power of attorney for health care, can reduce the need for court involvement and can guide a guardian if one is later appointed. This is where family law and estate planning overlap, because the documents you put in place today shape how decisions get made for you tomorrow.

Getting the Scope Right From the Start

Because a guardian's medical authority comes entirely from the court order, the most important work often happens at the front end, when the powers are defined. Asking for too little can leave a guardian unable to act in an emergency. Asking for powers the situation does not call for runs against Washington's preference for the least restrictive arrangement. Getting that balance right takes a clear understanding of both the person's needs and the statute.

If you are weighing a guardianship for a family member, or you are already serving as a guardian and are unsure how far your medical authority reaches, the Law Office of Chad Foster can help you read your order, understand your duties, and make decisions that hold up under Washington law. Reach out to talk through your situation and your next steps.