What would you call a legal document that lists a person care instructions should he or she be unable to communicate?

A legal document that outlines a person's care instructions in the event they are unable to communicate is typically called an "Advance Directive" or "Living Will." This document specifies the individual's preferences for medical treatment and end-of-life care, ensuring their wishes are respected. It can also include a designation of a healthcare proxy to make decisions on their behalf.