MI SB0832

Establishes the "Michigan Medical Treatment Decisions Act" to authorize individuals to make medical treatment decisions on behalf of patients aged 18 and older who are unable to participate in such decisions.

Creates a priority order for surrogate decision-makers: spouse, adult child, parent, adult sibling, grandparent, designated surrogate, or attending physician with another physician (if no other reasonably available individual exists).

Prohibits surrogates from authorizing withholding or withdrawal of life-sustaining treatment, sterilization, pregnancy termination, or admission to nursing homes, mental health facilities, or psychiatric hospitals.

Requires the patient's attending physician and another physician or psychologist to determine in writing that the patient is unable to participate in medical decisions before surrogates may act.

Protects health care providers from liability when implementing medical treatment decisions made by authorized surrogates in good faith, and preserves existing advance directives and patient advocate designations.