Mich. Comp. Laws § 550.1409a

Sec. 409a. (1) Any certificate delivered, issued for delivery, or renewed in this state that provides for coverage for dependent children who are full-time or part-time students shall continue coverage for that dependent student if the dependent student is covered under that certificate and takes a leave of absence from school due to illness or injury. Coverage under this section shall continue for 12 months from the last day of attendance in school or until the dependent reaches the age at which coverage would otherwise terminate, whichever period is shorter. (2) To qualify for coverage under this section, the dependent student's attending physician shall certify in writing to the health care corporation that it is medically necessary for the dependent student to take a leave of absence from school. (3) Coverage under this section shall be provided at the same rate as that charged for dependent student status. (4) A dependent child must continue to meet all other eligibility requirements for dependent coverage in the health care corporation's certificate or rider if the dependent child takes a leave of absence from school due to illness or injury.