Mich. Comp. Laws § 550.1418

Sec. 418. (1) A health care corporation certificate that provides coverage for emergency health services shall provide coverage for medically necessary services provided to a member for the sudden onset of a medical condition that manifests itself by signs and symptoms of sufficient severity, including severe pain, such that the absence of immediate medical attention could reasonably be expected to result in serious jeopardy to the individual's health or to a pregnancy in the case of a pregnant woman, serious impairment to bodily functions, or serious dysfunction of any bodily organ or part. A health care corporation shall not require a physician to transfer a patient before the physician determines that the patient has reached the point of stabilization. A health care corporation shall not deny payment for emergency health services up to the point of stabilization provided to a member under this subsection because of either of the following: (a) The final diagnosis. (b) Prior authorization was not given by the health care corporation before emergency health services were provided. (2) As used in this section, "stabilization" means the point at which no material deterioration of a condition is likely, within reasonable medical probability, to result from or occur during transfer of the patient.