WY| Bulletin No. 06-2025 from the Wyoming Department of Insurance is a notice clarifying an update to Wyoming Insurance Regulation Chapter 35 regarding Medicare Supplement Insurance. Effective June 4, 2025, the regulation introduces a “Birthday Rule” that provides an added Guaranteed Issue Period for Medicare Supplement policyholders. This period begins on the insured’s birthday and lasts for 63 days, during which the insured can switch to a different plan or carrier, provided the new plan offers similar or lesser coverage than their existing policy, without underwriting.