Michigan Compiled Laws, Chapter 330. Mental Health Code § 330.1143a

Sec. 143a. (1) The owner, operator, and governing body of a psychiatric hospital or psychiatric unit licensed under this chapter or operated by the department shall assure that licensed, registered, or certified mental health professionals admitted to practice in the facility are organized in order to enable an effective review of the professional practices in the psychiatric hospital or psychiatric unit for the purpose of improving the quality of patient care provided in the facility. This review shall include the quality and appropriateness of the care provided.

(2) The records, data, and knowledge collected for or by individuals or committees assigned a review function under subsection (1) are confidential, shall be used only for the purposes of review, are not public records, and are not subject to court subpoena.

(3) This section does not prevent disclosure of individual case records under section 748  1 or disclosure required by federal law to the agency designated by the governor to provide protection and advocacy under section 931.  2