Switching Medigap plans is one of those things that sounds like it should be straightforward but really isn’t. We get emails about this all the time — “I found a cheaper Plan G, can I just switch?” The short answer is yes, you can try. The longer answer is that it depends a lot on timing and your health.
If you’re still in your Open Enrollment Period, you’re golden. Insurers have to take you. But once that window closes, insurance companies can look at your health history and say no. That surprises a lot of people who assume they can switch anytime, like changing car insurance.
The good news is there are some protected situations — called guaranteed issue rights — where you can switch without being turned down, even after your open enrollment is over. We break all of those down below. David Chen walked his father-in-law through a Medigap switch last year when his insurer raised rates significantly, and even with guaranteed issue rights, the process took about six weeks and required careful timing to avoid a coverage gap.
Keep in mind that Medigap rules can vary by state, and CMS updates cost figures annually. Always verify your options at medicare.gov or with a free SHIP counselor before making changes. Have a question we didn’t cover? Send it to hello@seniorslist.com and we’ll get back to you.
Quick answer: You can switch Medigap plans anytime, but after your 6-month Open Enrollment Period, insurers can deny you based on health. The safest windows to switch: during Open Enrollment, within 12 months of joining Medicare Advantage (Trial Right), or when your plan leaves your area (guaranteed issue right).
How to Change Your Medigap Plan
Life changes — your health needs, your finances, and your circumstances may shift in ways that make your current Medigap plan less than ideal. The good news: switching Medigap policies is possible. The important caveat: it becomes more complicated once your Open Enrollment Period has passed.
Here’s a complete guide to changing Medigap plans.
Can You Switch Medigap Plans?
Yes — but with conditions. You can request to change Medigap plans at any time, but whether you’re guaranteed approval depends on timing.
During your Open Enrollment Period: Insurers must accept you for any plan at standard rates, regardless of health.
After your Open Enrollment Period: Insurers in most states can evaluate your health history, ask medical questions, and deny your application or charge higher premiums based on what they find.
There are exceptions to post-OEP restrictions — called guaranteed issue rights — that provide protected windows even after your open enrollment has passed.
Situations That May Lead to a Medigap Change
Your Policy Is Very Old
Medigap policies from before 2010 may have different coverage structures, and policies from before 1992 may carry significantly higher premiums. You’re not required to change an old policy, but switching to a current standardized plan could save you money.
Once you switch, your old policy cannot be repurchased — the circumstances that allowed you to buy it no longer exist.
You Have a New Policy With Pre-Existing Condition Coverage Gaps
If you’re in the first six months of a new Medigap policy and a pre-existing condition isn’t fully covered yet, you may want to evaluate whether a different plan provides better initial coverage for your specific conditions.
If you applied during your Open Enrollment Period, coverage for pre-existing conditions generally must begin within the first six months.
You’re Moving Out of State
Your Medigap policy remains valid nationwide — there’s no requirement to change it when you move. However, premium rates vary by location, and better-priced options may exist in your new state.
Switching in a new state outside your Open Enrollment Period means you’ll likely face medical underwriting — plus potentially higher premiums if your health has changed since you first enrolled.
You’re Switching to Medicare Advantage
If you’re moving from Original Medicare + Medigap to a Medicare Advantage plan, you must cancel your Medigap policy. Medigap only works with Original Medicare.
And if you’re already on Medicare Advantage, purchasing a Medigap plan is not allowed.
The Free-Look Period: 30 Days to Decide
When your new Medigap plan activates, you have 30 days to evaluate it — the “free-look period.” During this time:
- Keep your existing Medigap plan active until you’re sure the new one works for you
- Submit your application for the new plan before canceling the old one
- Your new application must include a commitment to cancel the old plan once the new one goes into effect
- You’ll pay premiums for both plans during the overlap — budget for this
What Is a Guaranteed Issue Right?
A guaranteed issue right gives you protected access to Medigap outside your Open Enrollment Period. You have guaranteed issue rights in several situations:
- Your Medicare Advantage plan leaves your area — You can return to Original Medicare and buy Medigap without underwriting
- Trial Right (first 12 months of Medicare Advantage) — If you switched from Original Medicare + Medigap to Medicare Advantage within the past 12 months, you can return to Original Medicare and buy any Medigap plan without underwriting
- Your insurer committed a fraudulent act — Certain improper denials or illegal actions by your insurer create guaranteed issue rights
- Your employer coverage ended — Losing employer-sponsored supplemental coverage may trigger guaranteed issue rights
Step-by-Step: How to Switch Medigap Plans
- Identify the plan and carrier you want to switch to — Get quotes and compare options
- Apply for the new plan — During your application, indicate you will cancel your existing Medigap policy upon activation
- Get approval — Wait for your new application to be accepted before taking further action
- Review your free-look period — Once the new plan activates, you have 30 days to evaluate both plans
- Cancel the old plan — Once satisfied, notify your old insurer to cancel the previous policy, effective the date your new plan began
Do not cancel your old plan before the new one is confirmed. You don’t want a gap in coverage.
Key Reminders
- Outside Open Enrollment, insurers can deny you — Medical underwriting is allowed in most states after your OEP
- Pre-existing conditions may have waiting periods — New policies can apply up to a 6-month pre-existing condition waiting period in some cases
- Pricing methods matter — If you’re switching from an attained-age plan, the new plan’s premiums at your current age may be higher than expected
- Shop around — Get at least three quotes before switching; premium differences for identical plan letters can be significant