What Happens When Your Medicare Advantage Plan Terminates or Leaves Your Area

Medicare Advantage plans occasionally exit markets, choosing not to renew their CMS contracts for a given county or region, or exiting Medicare entirely. When this happens to you, your coverage ends and you face a transition at the start of the year. This is not a crisis, but it requires action within a specific window that comes with important protections, including a guaranteed issue right to purchase Medigap without medical underwriting, that are valuable and that most people do not know about until they are in the situation.

Bryce's Take

The October termination notification is the one I actively watch for with clients. If your plan is leaving, you have guaranteed issue rights to purchase Medigap without underwriting, a window that is rare and valuable, especially if your health has changed since you first enrolled in Advantage. That window runs through February. Missing it means going back to underwriting. I reach out to clients specifically in October because of this.

How you find out your plan is leaving

CMS requires Medicare Advantage plans that will not renew their contracts for the coming year to notify enrolled members by October 2, a date specifically set to coincide with the start of the Annual Enrollment Period on October 15. The notice, sent by your plan, explains that coverage will end December 31, describes your options for new coverage, and outlines the Special Enrollment Period available to you. Read this notice carefully if it arrives. It is more important than standard Annual Enrollment Period materials.

Your Special Enrollment Period

When your Medicare Advantage plan terminates or leaves your service area, you receive a Special Enrollment Period. The SEP runs from the date you are notified (around October 2) through February 28 of the following year. During this window, you can enroll in a new Medicare Advantage plan in your area, enroll in a Part D plan and return to Original Medicare, or enroll in a Medigap plan. The extended window through February gives you time to make an informed decision rather than a rushed one.

The guaranteed issue Medigap right

This is the protection most people overlook. When your Medicare Advantage plan terminates, you gain a guaranteed issue right to purchase a Medigap supplement plan without medical underwriting. The insurer cannot deny you coverage, cannot charge you more based on your health history, and cannot impose waiting periods for pre-existing conditions. This right exists specifically because you lost coverage through no fault of your own. If your health has changed since you first enrolled in Medicare Advantage, making Medigap underwriting a potential obstacle under normal circumstances, the plan termination scenario gives you a rare chance to access Medigap protection regardless of your current health status.

Evaluating your options during the transition

Use the full SEP window to compare options carefully. Review the Medicare Advantage plans newly available in your area. Compare them on network (verify that your specific physicians are contracted), formulary (check your medications specifically), premium, and out-of-pocket maximum. If you are interested in Medigap, contact multiple carriers for quotes during this window and apply while your guaranteed issue right is active. Medigap applications are typically processed within weeks, so applying in November or early December ensures coverage is ready for January 1.

Received notice that your Medicare Advantage plan is terminating?

The October notification triggers one of the most valuable coverage windows in Medicare, including guaranteed issue Medigap rights that are rare outside initial enrollment. I can help you evaluate your options before the window closes.

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What happens if you take no action

If you do not choose a new plan during the SEP window, Medicare does not leave you without coverage. You are automatically returned to Original Medicare (Parts A and B) on January 1. You are not automatically enrolled in a new Advantage plan or a Part D plan. Without a Part D plan, you risk going without drug coverage and potentially incurring the Part D late enrollment penalty if the gap extends beyond 63 days. Taking affirmative action to choose new coverage, either a new Advantage plan or returning to Original Medicare with a Part D plan, is important.

The February deadline for Medigap

Your guaranteed issue right to purchase Medigap following a plan termination runs through February 28 of the year following the termination. If your plan terminates December 31 and you want to use the Medigap guaranteed issue right, apply before February 28. After that date, applying for Medigap outside your initial enrollment period requires passing medical underwriting in most states, which may no longer be possible if your health has changed.

Frequently asked questions

Will I receive my medications automatically if my plan terminates?

Your drug coverage ends when your plan terminates. If you choose a new plan with drug coverage, your medications are covered under the new plan from its effective date. If you return to Original Medicare, enroll in a standalone Part D plan. Pharmacies can fill an emergency supply under original Medicare while you arrange new drug coverage.

What if the only plans available in my area have poor ratings or inadequate networks?

In some markets, particularly rural areas, plan options may be limited. If no available Advantage plan meets your needs, returning to Original Medicare plus a Medigap plan and a Part D plan is always an option, and the plan termination scenario gives you guaranteed issue rights for Medigap regardless of your health.

How far in advance should I apply for Medigap when my plan is terminating?

Apply as soon as you receive the termination notice in early October. Applications submitted in October or November for January 1 Medigap coverage give you ample processing time. Waiting until December creates time pressure on processing.

Does my plan termination affect my Medicare Part A and Part B?

No. Parts A and B are separate from your Medicare Advantage plan. A plan termination ends your Advantage plan coverage but does not affect your underlying Medicare eligibility or enrollment. You retain Parts A and B regardless of what happens to your Advantage plan.

Bryce Casson

Licensed Independent Medicare Broker

Bryce Casson is an independent Medicare insurance broker who works with every major carrier. He does not represent any single insurer, which means his recommendations are based on what actually fits each client's situation, not on commissions or quotas.