Mich. Comp. Laws § 330.1824

Sec. 824. (1) No determination of ability to pay that is made by the department or community mental health services program shall impose an undue financial burden on the individual or the individual's family members. (2) In an instance where through no fault of the individual or the individual's family members the department or community mental health services program has not billed for services in a timely manner, an undue financial burden has been created. The department or community mental health services program shall only obligate an individual or the individual's family to pay for services based on their ability to pay when the initial bill for services is presented within 2 years from the date the services were provided.