Advance directives and POLST forms: the difference, and why both matter

An advance directive — which typically includes a living will and a healthcare power of attorney designation — is a legal document any competent adult can complete, specifying general wishes about future medical care and naming someone to make decisions if the person becomes unable to make them personally. It's forward-looking and broadly applicable, meant to guide decisions across a range of possible future scenarios that haven't necessarily happened yet.

A POLST form (Physician Orders for Life-Sustaining Treatment, with some states using slightly different names for the same concept) is a different kind of document entirely: it's a set of actual medical orders, signed by a physician or authorized provider, specifying current, immediately actionable treatment preferences — whether to attempt resuscitation, what level of medical intervention to pursue — intended specifically for people with a serious illness or significant frailty where these decisions are a near-term, realistic possibility rather than a distant hypothetical.

The practical distinction that matters most: an advance directive is a legal planning document that guides a healthcare proxy's decision-making, while a POLST is a standing medical order that emergency responders and hospital staff can act on immediately without first tracking down and interpreting a separate legal document — this is precisely why POLST forms are recommended specifically for patients with serious, life-limiting illness or significant frailty, and not as a document every healthy adult needs the way an advance directive arguably is.

Having one without the other leaves a real gap: an advance directive without a POLST, for someone seriously ill, may not translate into immediate actionable guidance for a first responder in an acute emergency, while a POLST without a broader advance directive doesn't address the wider range of care decisions and proxy designation an advance directive covers. For a caregiver managing a loved one with serious chronic illness, having both documents current and accessible is worth confirming directly with the treating physician rather than assuming one covers what the other is meant to do.