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Medigap Open Enrollment

Six months, guaranteed acceptance, your one best shot. Confirm your dates at 1-800-MEDIGAP.

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Quick answer

The Medigap Open Enrollment Period is the six months that begin the first month you're 65 or older AND enrolled in Part B. During this one-time window you have guaranteed issue rights: insurers must sell you any plan at their best rate, with no health questions or denials, per Medicare.gov.

Your Medigap Open Enrollment Period is the single best time to buy a plan, no medical underwriting. Here's what you need to know before it closes.

When is your Medigap Open Enrollment Period?

Your Medigap Open Enrollment Period automatically begins on the first day of the month you're both 65 or older and enrolled in Medicare Part B, and it lasts six months. This is a one-time, individual window, it's not the same as Medicare's Annual Enrollment Period in the fall. During these six months you have guaranteed issue rights: any insurer must sell you any Medigap plan it offers at its best available rate, regardless of your health history. Miss this window and you may have to answer health questions and could be charged more or declined. To confirm your exact dates, call 1-800-MEDIGAP (1-800-633-4427).

Why does this window matter so much?

During your Medigap Open Enrollment Period, insurers cannot use medical underwriting, they can't deny you, charge you more, or impose waiting periods based on pre-existing conditions. Outside this window, unless you qualify for a limited guaranteed-issue situation, carriers can review your health and may reject your application or raise your premium. That makes these six months uniquely valuable, especially if you have any health conditions. It's the one time you're guaranteed access to every plan at the best price. Because the window doesn't reopen, acting before it closes is critical. Call 1-800-MEDIGAP now to lock in your coverage while you're guaranteed acceptance.

More on Medicare Supplement / Medigap

Frequently asked questions

When does Medigap Open Enrollment start?+

Your Medigap Open Enrollment Period starts on the first day of the month you're both 65 or older and enrolled in Medicare Part B. It lasts six months. This is a personal, one-time window, not a yearly season. Call 1-800-MEDIGAP to confirm your exact dates.

What happens if I miss Medigap Open Enrollment?+

If you miss your six-month window, insurers can use medical underwriting, meaning they can charge more or deny you for pre-existing conditions, unless you qualify for a guaranteed-issue situation. You can still apply, but approval isn't guaranteed. Call 1-800-MEDIGAP to review your options.

Is Medigap Open Enrollment the same as Medicare's fall enrollment?+

No. Medigap Open Enrollment is your personal six-month window tied to turning 65 and enrolling in Part B. Medicare's Annual Enrollment Period (October 15 to December 7) is for Medicare Advantage and Part D, not Medigap. They are completely separate, call 1-800-MEDIGAP to clarify.

Can I buy Medigap outside open enrollment?+

Yes, you can apply any time, but outside your open enrollment or a guaranteed-issue situation, you may face medical underwriting and could be denied or charged more. Some states offer extra protections. Call 1-800-MEDIGAP to see if you qualify for guaranteed acceptance.

Does my Medigap window reopen?+

No. Your six-month Medigap Open Enrollment Period is a one-time window that doesn't reopen. That's why it's so important to act before it closes. Certain life events can trigger limited guaranteed-issue rights later, but they're narrow. Call 1-800-MEDIGAP before your window ends.

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