The short answer
If you apply for a Medicare Supplement outside a guaranteed-issue window, the insurer can use medical underwriting — meaning they ask health questions and can decline you or charge more based on your answers. Knowing what they typically ask helps you gauge your chances before you apply, so you don't drop existing coverage prematurely.
Underwriting isn't a mystery box: the questions focus on specific conditions and recent medical history, and many healthy people pass easily.
What insurers ask about
Applications generally ask about major and chronic conditions — things like recent heart problems, cancer treatment, COPD, diabetes with complications, kidney disease, and recent hospitalizations or surgeries. They often use look-back periods, asking whether you've been treated for or diagnosed with certain conditions within a set number of years or months.
Some conditions lead to an automatic decline at a given insurer, while others just affect your rate. Because insurers differ in what they'll accept, being declined by one doesn't mean every insurer will decline you.
How to gauge your odds
Before applying, review the specific insurer's health questions and think honestly about how you'd answer, especially within their look-back periods. If you're generally healthy, you'll likely qualify; if you have a significant recent condition, it's worth checking which insurers are more lenient before you apply, and not canceling current coverage until you're approved.
If you have a guaranteed-issue right instead, you skip underwriting entirely — our guide to guaranteed-issue situations explains when that applies. Otherwise, our Medicare Supplement overview covers the application process.
Frequently Asked Questions
What health questions does Medigap underwriting ask?
Typically about major and chronic conditions — recent heart problems, cancer, COPD, complicated diabetes, kidney disease, and recent hospitalizations or surgeries — often within set look-back periods.
Can I be denied a Medigap plan?
Outside a guaranteed-issue window, yes. Insurers can decline you or charge more based on your health. But insurers differ, so a decline from one doesn't mean all will decline you.
How do I know if I'll be approved?
Review the insurer's specific health questions and look-back periods and consider how you'd answer. If healthy, you'll likely qualify; if not, check which insurers are more lenient and don't cancel current coverage until approved.
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