Montana Title 33. Insurance and Insurance Companies § 33-22-109. Riders

(1) Except for group health insurance coverage provided by a group health plan or a health insurance issuer, a policy of disability insurance may contain a provision that excludes coverage for specific conditions through the use of elimination riders for conditions for which medical advice, diagnosis, care, or treatment was recommended by or received from a provider of health care services within 3 years preceding the effective date of coverage of an insured person. The provisions of 33-22-110 do not apply to elimination riders. An insured person may apply to the insurer for removal or modification of a rider, and the insurer shall respond to the application within 60 days of receipt.

(2) An insurer may not, except upon agreement by the insured, retroactively impose an elimination rider on an existing policy, certificate, or contract.