Michigan Compiled Laws, Chapter 330. Mental Health Code § 330.1264

Sec. 264. (1) The consent to the provision of substance use disorder related medical or surgical care, treatment, or services by a hospital, clinic, or health professional authorized by law executed by a minor who is or professes to be an individual with a substance use disorder is valid and binding as if the minor had achieved the age of majority. The consent is not subject to later disaffirmance by reason of minority. The consent of any other person, including a spouse, parent, guardian, or person in loco parentis, is not necessary to authorize these services to be provided to a minor.

(2) For medical reasons, the treating physician, and, on the advice and direction of the treating physician, a member of the medical staff of a hospital or clinic or other health professional, may, but is not obligated to, inform the spouse, parent, guardian, or person in loco parentis as to the treatment given or needed. The information may be given to or withheld from these persons without consent of the minor and notwithstanding the express refusal of the minor to the providing of the information.

(3) A spouse, parent, guardian, or person in loco parentis of a minor is not legally responsible for services provided under this section.