Mich. Comp. Laws § 550.1405

Sec. 405. (1) A health care corporation, in consultation with the department of social services, shall develop a single billing form to be used for the billing of each of the following: hospital services, physician services, and pharmaceutical services. If such forms are subsequently developed by the federal government, they may be used in the place of forms developed pursuant to this subsection. (2) A health care corporation shall provide each member with a detailed and accurate explanation of his or her total bill for services rendered by a health care provider and provided under a certificate with a health care corporation, including charges for specific types of services rendered, the date of services rendered, the amounts reimbursed by the corporation, and the reasons for denial of any payments for expenses incurred.