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Today's Report

Medicare Advantage enrollees may face challenges switching to Medigap due to pre-existing conditions

A new analysis reveals that a significant number of Medicare Advantage beneficiaries could be denied a Medigap policy if they attempt to switch, particularly if they have pre-existing health conditions.

By Editorial Desk · The Health Almanac Editorial TeamPublished October 15, 20264 min read

Switching from Medicare Advantage (MA) to a Medigap (Medicare Supplement) policy could be a complicated process for many, especially if pre-existing health issues are present. A recent analysis highlights that nearly three-quarters of Medicare Advantage enrollees could face denial for a Medigap policy because of their health status [KFF Medicare].

Understanding Medigap and Its Limitations

Medigap policies are designed to cover certain out-of-pocket costs that original Medicare does not, such as deductibles, copayments, and coinsurance. However, unlike Medicare Advantage plans, Medigap policies are typically underwritten by private insurers. This means that, in most states, insurers can consider an applicant's health status when determining eligibility and setting premiums [KFF Medicare]. This practice can pose a significant barrier for individuals with pre-existing conditions who wish to move from a Medicare Advantage plan back to original Medicare plus a Medigap policy.

There are specific times when beneficiaries have a guaranteed right to purchase a Medigap policy without medical underwriting. The most common period is during the initial six months after enrolling in Medicare Part B, provided the beneficiary is also at least 65 years old. During this period, insurers cannot deny coverage or charge higher premiums based on health conditions [KFF Medicare]. However, this guaranteed issue right generally does not apply if a beneficiary decides to switch from Medicare Advantage after this initial enrollment window has closed.

Impact on Beneficiaries

For the 74% of Medicare Advantage enrollees who could be denied a Medigap policy due to pre-existing conditions, this situation presents a critical choice. Many may find themselves effectively locked into their Medicare Advantage plan, even if they become dissatisfied with its coverage, provider networks, or cost-sharing requirements [KFF Medicare].

This concern is particularly relevant for older adults and those with chronic health conditions, who often have the greatest need for predictable healthcare costs and broad access to specialists. While Medicare Advantage plans offer an all-in-one approach, including prescription drug coverage and often extra benefits, some beneficiaries prefer the flexibility and lower out-of-pocket costs for services under original Medicare with a Medigap plan [KFF Medicare]. The ability to make this switch freely, regardless of health, is crucial for consumer choice and access to care.

State and Federal Rules Vary

It is important to note that Medigap guaranteed issue requirements can vary by state. Some states offer additional protections that allow beneficiaries to switch Medigap policies or move from Medicare Advantage to Medigap under certain circumstances, regardless of health [KFF Medicare]. However, these state-specific rules are not universal, and many beneficiaries still face the risk of denial if they do not meet the limited federal guaranteed issue criteria. Individuals considering a change in their Medicare coverage should carefully review their options, understand state-specific regulations, and be aware of their enrollment periods to avoid potential coverage gaps or denials [KFF Medicare].

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  • updateOctober 15, 2026 — Today's Report. Assembled from 3 source(s). Pillar: medicare.
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