Mich. Comp. Laws § 550.1205a

Sec. 205a. A health care corporation shall report financial information in conformity with sound actuarial practices and statutory accounting principles in the same manner as designated by the commissioner for other carriers pursuant to section 438(2) of the insurance code of 1956, 1956 PA 218, MCL 500.438. Approved permitted practices for the sole purpose of effectuating the transfer to statutory accounting principles under this section may be used by a health care corporation until January 1, 2007.