If you’re worried about the out‑of‑pocket costs of Original Medicare, you may be considering a Medicare Supplement insurance (Medigap) plan to help cover expenses like deductibles and coinsurance.
Because Medigap plans are sold by private insurance companies—not the federal government—not every applicant is automatically accepted. That raises an important question: Can you be denied a Medicare Supplement plan?
The answer depends largely on when and where you apply. Here’s how Medigap enrollment works—and what you can do to improve your chances of qualifying.
How Do Medicare Supplement (Medigap) Plans Work?
Medicare Supplement plans help pay for costs Original Medicare doesn’t fully cover, including deductibles, coinsurance, and copayments.
For example, in 2026:
- The Medicare Part A hospital deductible is $1,736 per benefit period.
- After meeting the Part B deductible of $283, beneficiaries typically pay 20% coinsurance for most outpatient services.
These costs can add up quickly, especially during serious illness or extended care.
With a Medigap plan:
- You pay a monthly premium to a private insurer.
- In return, the plan covers some or all of Medicare’s out‑of‑pocket costs.
- Coverage depends on the plan letter you choose (Plans A–N).
Important note: Medigap plans only work with Original Medicare (Parts A and B) and cannot be used with Medicare Advantage plans.
Related: Understanding the Difference: Original Medicare vs. Medicare Advantage
Can You Be Denied a Medicare Supplement Plan?
During Your Medigap Open Enrollment Period: No
When you first enroll in Medicare Part B at age 65 or older, you qualify for a one‑time Medigap Open Enrollment Period. This window:
- Lasts six months.
- Begins the month your Part B coverage starts.
- Guarantees acceptance into any Medigap plan sold in your state.
During this time:
- Insurance companies cannot deny coverage.
- They cannot charge higher premiums due to health conditions.
- Medical underwriting is not allowed.
After Open Enrollment Ends: Possibly
Once your Medigap Open Enrollment Period ends, insurers in most states may:
- Ask health questions.
- Review medical history.
- Deny your application or charge higher premiums based on health status.
This is why timing matters so much.
States With Guaranteed Issue Protections
Four states offer broader protections that prevent denial due to health conditions:
- Connecticut
- Maine
- Massachusetts
- New York
In these states, Medigap insurers must offer coverage either year‑round or during annual guaranteed‑issue windows, even if you have pre‑existing conditions.
If you live outside these states, Medigap denial for health reasons is possible once open enrollment ends.
How to Improve Your Chances of Qualifying
- Apply During Open Enrollment.
This is the best and simplest option. You’ll have the most plan choices and no health screening.
- Don’t Wait Too Long.
Applying earlier—before serious health conditions develop—may improve your chances if underwriting applies.
- Compare Multiple Insurance Companies.
Each insurer has different underwriting guidelines. A condition that disqualifies you with one company may be acceptable to another.
What If You’re Denied a Medigap Plan?
If you can’t qualify for a Medicare Supplement plan, Medicare Advantage (Part C) may be an alternative.
Medicare Advantage plans:
- Are offered by private insurers.
- Include built‑in limits on out‑of‑pocket costs.
- Accept applicants regardless of health during the Annual Enrollment Period (October 15–December 7).
Because Medigap and Medicare Advantage work very differently, comparing both options is important.
Related: Understanding the Difference Between Medigap and Medicare Advantage
Get Help Navigating Your Options
Medicare rules are complex—and mistakes can be costly.
A knowledgeable professional can:
- Explain Medigap vs. Medicare Advantage.
- Identify guaranteed‑issue opportunities.
- Help you apply at the right time to avoid denial.
Getting personalized guidance can make all the difference in protecting your health—and your budget—in retirement.
Want more? Check out our blog, The Medicare Supplement Birthday Rule Now in More States—Here’s What You Need to Know
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Bankers Life is not affiliated with or endorsed by the U.S. government or the federal Medicare program.
