Advance health care directives; Uniform Health Care Decisions Act of 2025; definitions; capacity; presumption of capacity; overcoming presumption; notice; judicial review; power of attorney; advance mental health care directive; conflicting health care directives; default surrogate; disqualification; revocation; validity; conflict of law; duties; powers; coagents; responsibilities; immunity; conduct; damages; judicial relief; effective date.

HB 1687, the "Uniform Health Care Decisions Act of 2025," establishes a standardized framework for advance health care directives in Oklahoma. It defines key terms like "advance health care directive" (including mental health-specific directives), "agent," "default surrogate," and "capacity," clarifying who can make health care decisions for individuals who cannot. The bill creates clear processes for creating, revoking, and following directives, specifies duties for health care professionals and institutions, and outlines a hierarchy of decision-makers (like family members or cohabitants) when no directive exists. It directly affects Oklahomans planning their future care, their families, and health care providers who must follow these guidelines. The law aims to reduce confusion and ensure decisions align with an individual's known wishes.