Medicare Supplement Underwriting Rules by State
Medicare supplement rules vary dramatically from state to state. Some states give you an annual window to switch Medigap plans without medical underwriting. Others lock you in the moment your initial enrollment period ends.
Understanding your state’s rules before you enroll can save you thousands of dollars — and prevent permanent coverage problems.
Why Your State’s Rules Matter
Open Enrollment Protections
Federal law guarantees a one-time 6-month Medigap open enrollment period when you turn 65 and enroll in Part B. After that, protections depend entirely on your state.
Birthday Rules
A handful of states give you an annual window around your birthday to switch Medigap plans without medical underwriting. Most states do not.
Guaranteed Issue Rights
Federal law provides guaranteed issue in specific situations — like losing employer coverage. Some states extend additional guaranteed issue protections beyond the federal minimum.
Underwriting After Open Enrollment
Outside of protected periods, carriers in most states can deny your Medigap application based on health history. The rules for when and how this applies vary by state.
Rate Structures
States regulate how carriers price Medigap policies: community-rated, issue-age, or attained-age. The method your state allows directly affects what you pay now and in the future.
Timing Is Everything
Many state protections have strict deadlines. Missing a window by even one day can mean the difference between guaranteed coverage and a medical underwriting denial.
State-by-State Guides
Select your state for a detailed breakdown of enrollment rules, protections, and carrier-specific guidance.
Not sure which rules apply to you?
A 30-minute call covers your state’s specific protections, your enrollment timeline, and which plans are available in your area. No cost, no obligation.
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Cindy Kowalski, Licensed Independent Medicare Advisor
I built Eligry because I almost made the wrong Medicare choice myself. I’m independent, appointed with most major carriers, and licensed in 22 states. I get paid the same regardless of which plan you choose, so I have no reason to steer you anywhere but the right answer.
Eligry LLC · Cindy Kowalski, Licensed Independent Medicare Advisor · NPN 21601670 · (352) 464-4400 · cindy@eligry.com
This content is educational and does not constitute financial, legal, or tax advice. State rules are updated annually and subject to change. We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options. Not affiliated with or endorsed by the U.S. government or the federal Medicare program.