Michigan Compiled Laws, Chapter 500. Insurance Code of 1956 § 500.3406o

Sec. 3406o. (1) An insurer that delivers, issues for delivery, or renews in this state a health insurance policy that provides coverage for prescription drugs and limits those benefits to drugs included in a formulary shall do all of the following:

(2) On a request for an expedited review of coverage for a nonformulary alternative based on exigent circumstances, an insurer shall make a determination and notify the enrollee or the enrollee's designee and the prescribing physician, or other prescriber, as appropriate, of the determination within 24 hours after the insurer receives all information necessary to determine whether the exception should be granted. For purposes of this subsection, exigent circumstances exist when an enrollee is suffering from a health condition that may seriously jeopardize the enrollee's life, health, or ability to regain maximum function or when an enrollee is undergoing a current course of treatment using a nonformulary drug.

(3) If subsection (2) does not apply, an insurer shall make a determination on coverage for a nonformulary alternative and notify the enrollee or the enrollee's designee and the prescribing physician, or other prescriber, as appropriate, of the determination within 72 hours after the insurer receives all information necessary to determine whether the exception should be granted.

(4) This section is subject to section 3406w.  1