Mich. Comp. Laws § 550.1008

Sec. 8. (1) Except as otherwise provided in this act, a health care corporation organized under Act No. 350 of the Public Acts of 1980, being sections 550.1101 to 550.1704 of the Michigan Compiled Laws, shall not, either itself or through any affiliate or agent, enter into a contract or other arrangement with any insurer or other person which provides for the packaging of health benefits with insurance. (2) A health benefit corporation may arrange for excess loss insurance in conjunction with the sale of administrative services benefits. (3) A health maintenance organization licensed under part 210 of the public health code, Act No. 368 of the Public Acts of 1978, being sections 333.21001 to 333.21098 of the Michigan Compiled Laws, may arrange with an insurer for the insurer to sell a policy to supplement the health benefits of the health maintenance organization.