Can You Switch from Medicare Advantage to Medigap?

The most common regret in Medicare is this: someone enrolls in a Medicare Advantage plan at 65 because the $0 premium is appealing, then develops a health condition, starts seeing specialists regularly, or just wants the freedom to see any doctor, and decides they want to switch to a Medigap plan. The problem is that switching is harder than most people realize once you are past your initial enrollment window. This is not impossible, but understanding the obstacles is essential before you try.

Bryce's Take

This is the call I get from people who are frustrated. They got the Advantage plan at 65 because it was $0, and now they have been diagnosed with something or their specialist is not in-network. The window to switch back to Medigap without underwriting was their first year on Advantage. If they are past that window, we work with what we have, but knowing your options before you need them is exactly what our call is for.

The underwriting problem

When you first enroll in Medicare and sign up for a Medigap plan during your open enrollment period (the six months starting the month you turn 65 and are enrolled in Part B), insurance companies cannot deny you coverage or charge you more based on your health history. That protection disappears after your open enrollment period closes. Outside that window, applying for a Medigap plan in most states means submitting to medical underwriting. The insurer reviews your health history and can deny coverage, apply exclusions, or charge higher premiums based on pre-existing conditions.

When you can switch without underwriting: guaranteed issue rights

Federal law creates specific situations called guaranteed issue rights, where Medigap insurers must sell you a plan without underwriting. The most important guaranteed issue situations include: you are moving out of your Medicare Advantage plan service area permanently; your Medicare Advantage plan is leaving your area or exiting Medicare entirely; your Advantage plan was found to have materially misled you; or you joined a Medicare Advantage plan for the first time at 65 and want to switch back within 12 months (the trial right).

The first-year trial right

If you enrolled in your very first Medicare Advantage plan when you first became eligible for Medicare at 65, and within the first 12 months you decide you want to go back to Original Medicare, you have a one-time guaranteed issue right to enroll in a Medigap plan without underwriting. You must act within 12 months of your Advantage plan effective date. This is a powerful protection that is often underutilized because people do not know it exists.

State-level guaranteed issue protections

Several states have enacted laws that provide broader guaranteed issue rights than federal minimums. Connecticut, Massachusetts, Maine, New York, and Washington have continuous or annual open enrollment for Medigap plans, meaning insurers cannot deny you coverage or charge you more based on health status at any time. If you live in one of these states, switching to Medigap is significantly less complicated. A few other states have additional protections, so it is worth checking your state regulations.

What happens if you are outside these windows

If you do not have a guaranteed issue right and you live in a state without additional protections, you will need to apply through medical underwriting. Each insurer has its own underwriting guidelines. Common conditions that can lead to denial or higher rates include diabetes with complications, heart disease, cancer history, COPD, kidney disease, and a history of stroke. Healthy individuals typically have no issue, but anyone with significant health history should assume underwriting will be a hurdle.

The practical approach to switching

If you want to switch and you believe you can pass underwriting, apply for the Medigap plan before dropping your Advantage plan. Wait until the Medigap plan is approved and effective before disenrolling from Advantage. This prevents a coverage gap. If you are denied, you still have Advantage coverage in place. Also consider that timing matters: you can disenroll from Advantage during the Annual Enrollment Period (October 15 to December 7) for January 1 coverage, or during the Medicare Advantage Open Enrollment Period (January 1 to March 31) to make one plan change effective the first of the following month.

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.