How to Compare Medicare Supplement Insurance Companies
When comparing Medicare Supplement companies, don’t compare benefits first—compare the same standardized plan across insurers.
Can You Be Denied a Medicare Supplement Plan?
Last Modified: 10/05/2026 | Reviewed by Keith Armbrecht (NPN 634015)
Quick Summary
Yes. A Medicare Supplement insurance company may be able to deny your application in certain situations if you’re outside your Medigap Open Enrollment Period and don’t have a guaranteed-issue right.
During your federally protected Medigap Open Enrollment Period—or when you have a qualifying guaranteed-issue right—the insurer generally can’t use your health to deny the applicable Medigap coverage.
Outside those protections, medical underwriting may apply, depending on your state. (Medicare)
Key Facts
- You generally can’t be medically denied during your Medigap Open Enrollment Period.
- Your federal Medigap Open Enrollment Period lasts six months.
- Guaranteed-issue rights can also protect you.
- Outside protected situations, medical underwriting may apply.
- An insurance company may ask health questions.
- Your application can potentially be denied.
- State laws may give you additional protections.
- Some states have special birthday or anniversary switching rules.
- Never cancel your existing Medigap policy before a replacement is approved.
- When using a guaranteed-issue right, you may need documentation proving that right. (Medicare)
When Can an Insurer Not Deny You Based on Health?
During Medigap Open Enrollment
Your six-month federal enrollment period gives you strong protection.
During a Guaranteed-Issue Situation
Certain events trigger federal Medigap protections.
In those situations, insurance companies generally must sell you certain Medigap policies and can’t charge more because of your health. (Medicare)
When Can Medical Underwriting Apply?
Outside your Open Enrollment Period or a guaranteed-issue situation, insurers may be permitted to review your health history.
Questions can involve things such as:
- Certain health conditions
- Recent hospitalizations
- Pending procedures
- Specific medications
- Other medical-history criteria
Underwriting rules vary by carrier and state.
What If One Company Denies You?
A denial from one company doesn’t necessarily mean every insurer will make the same decision.
Underwriting standards can vary.
But never submit inaccurate information merely to obtain approval.
Applications should be answered truthfully and completely.
State Rules Matter
Federal law establishes minimum Medigap protections.
Some states give Medicare beneficiaries additional rights to purchase or change Medicare Supplement coverage.
Always consider the rules in your state.
Video Explanation from Keith
Can a Medicare Supplement Company Turn You Down?
Keith's Take
This is exactly why I don’t like telling people:
“You can always change Medicare Supplement companies later.”
That’s simply not true everywhere.
If you’re outside a protected enrollment period, the company may ask medical questions.
Some conditions won’t be a problem.
Others might.
That’s why getting your Medigap decision right during your initial Open Enrollment Period can be extremely valuable.
Keith Armbrecht
Medicare on Video
Frequently Asked Questions About Medigap Denials
Q. Can I be denied Plan G?
A. Yes, potentially, when medical underwriting is permitted.
Q. Can I be denied during Medigap Open Enrollment?
A. The insurer can't use medical underwriting to deny you during your federally protected Medigap Open Enrollment Period.
Q. What is medical underwriting?
A. The insurance company's evaluation of your health when determining whether to accept your application outside protected enrollment situations.
Q. Do all carriers use identical underwriting rules?
A. No.
Q. What is guaranteed issue?
A. A legal protection requiring insurers to offer certain Medigap coverage without using your health to deny you.
Q. What if my health changed after buying Medigap?
A. A standardized Medigap policy is generally guaranteed renewable as long as applicable policy requirements are met.
Q. Can state laws help me?
A. Yes. Some states provide additional Medigap protections.
Official Government Sources
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