Mich. Comp. Laws § 500.3931

Sec. 3931. The commissioner may promulgate rules including the following: (a) Rules establishing standards for the sale of long-term care insurance policies, terms of renewability, initial and subsequent conditions of eligibility, nonduplication of coverage provisions, coverage of dependents if provided in the policy, preexisting conditions, termination of insurance, continuation or conversion, probationary periods, limitations, exceptions, reductions, elimination periods, requirements for replacement, recurrent conditions, definitions of terms, and for full and fair disclosure setting forth the manner, content, and required disclosures. (b) Rules establishing loss ratio standards for long-term care insurance policies.