The short answer
When you join a Medicare Advantage plan as soon as you're first eligible for Medicare, you get a trial right: during your first 12 months in that plan, you can change your mind, leave, and buy a Medigap supplement with guaranteed acceptance — no health questions, no chance of being turned down. It's a built-in safety net most new enrollees never hear about.
The same guaranteed-issue right applies if you dropped a Medigap plan to try Medicare Advantage for the first time and want to go back within 12 months. Either way, it protects people who try Advantage and decide it isn't for them.
Why it exists and who it helps
The trial right exists precisely because the Medigap market normally uses medical underwriting outside your initial window. Without this protection, someone who chose Medicare Advantage at 65 and then developed a health condition could be stuck, unable to qualify for a supplement. The trial right gives first-time Advantage enrollees a genuine chance to reconsider.
It's especially valuable for people who weren't sure at 65 and picked Advantage for its low premium, then found the network or prior-authorization rules didn't fit their care. Our guide to switching from Medicare Advantage to Medigap covers how the move works.
How to use it
If you're in your first year of Medicare Advantage and having second thoughts, don't wait past the 12-month mark. Within that window you can return to Original Medicare and apply for a Medigap plan with guaranteed acceptance. After the window, you'd generally face underwriting.
The practical move is to give your Advantage plan an honest try early in that first year, and if it's not working, act before the trial right expires. Our Medicare Supplement overview explains the plans you'd be able to choose from with guaranteed acceptance.
Frequently Asked Questions
What is the Medicare Advantage trial right?
If you join Medicare Advantage when first eligible for Medicare, you can leave within 12 months and buy a Medigap plan with guaranteed acceptance — no health questions.
Does the trial right apply if I dropped Medigap to try Advantage?
Yes. If you dropped a Medigap plan to try Medicare Advantage for the first time, you generally have a 12-month guaranteed-issue right to return to your Medigap coverage.
What happens after the 12 months?
After the trial-right window, buying a Medigap plan usually requires medical underwriting, so an insurer could decline you or charge more based on your health.
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