Wyo. Stat. Ann. § 26-38-203
(a) No Medicare supplement insurance policy or certificate in force in the state shall contain benefits which duplicate benefits provided by Medicare.
(b) The commissioner shall adopt reasonable regulations to establish specific standards for policy provisions of Medicare supplement policies and certificates. The standards shall be in addition to and in accordance with applicable laws of this
state. No requirement of the code relating to minimum required policy benefits, other than the minimum standards contained in this act, shall apply to Medicare supplement policies and certificates. The standards may cover, but are not limited to:
(c) The commissioner shall adopt reasonable regulations that specify prohibited policy provisions not otherwise specifically authorized by statute which, in the opinion of the commissioner, are unjust, unfair or unfairly discriminatory to any person insured or proposed for coverage under a Medicare supplement policy or certificate.
(d) Notwithstanding any other provision of law or contract, a Medicare supplement policy or certificate shall not exclude or limit benefits for losses incurred more than ninety (90) days from the effective date of coverage because the loss involved a preexisting condition. The policy or certificate shall not define a preexisting condition more restrictively than a condition for which medical advice was given or treatment was recommended by or received from a physician within ninety (90) days before the effective date of coverage.