Michigan Compiled Laws, Chapter 550. General Insurance Laws § 550.1620

Sec. 620. (1) Notwithstanding any provision of this act to the contrary, a certificate delivered, issued for delivery, or renewed in this state on or after January 1, 2014 by a health care corporation is subject to the policy and certificate issuance and rate filing requirements of the insurance code of 1956, 1956 PA 218, MCL 500.100 to 500.8302, including the rating factor requirements of section 3474a of the insurance code of 1956, 1956 PA 218, MCL 500.3474a.

(2) For a certificate delivered, issued for delivery, or renewed in this state on or after January 1, 2014, subject to the prior approval of the commissioner, a health care corporation may establish reasonable open enrollment periods.

(3) The commissioner shall establish minimum standards for the frequency and duration of open enrollment periods established under subsection (2). The commissioner shall uniformly apply the minimum standards for the frequency and duration of open enrollment periods established under this subsection to all health care corporations.

(4) A health care corporation offering coverage during an open enrollment period established under subsection (2) shall not deny or condition the issuance or effectiveness of a certificate and shall not discriminate in the pricing of the certificate on the basis of health status, claims experience, receipt of health care, or medical condition.