When can I switch my Medicare Supplement plan? In many states, you can apply for a different Medicare Supplement plan at any time during the year—but the insurance company may require medical underwriting before approving your application.
Medicare Supplement insurance, also called Medigap, does not have the same annual enrollment period as Medicare Advantage and Medicare Part D. You do not necessarily need to wait until October, your birthday, or the beginning of a new year to submit an application.
However, the right to apply is not always the same as the right to be accepted.
After your six-month Medicare Supplement Open Enrollment Period ends, an insurance company may review your health history, prescriptions, and recent medical treatment unless you qualify for a guaranteed-issue right or another protection available under state law.
When Can I Switch My Medicare Supplement Plan During the Year?
In many states, you can submit an application to switch Medicare Supplement plans during any month of the year.
For example, you may be able to apply because:
- Your premium increased
- Another company offers a better rate
- You want to change from Plan G to Plan N
- You want to change from Plan N to Plan G
- You prefer a different insurance company
- Your current plan no longer fits your needs
- You want your coverage reviewed
Although you may apply, approval is not guaranteed outside a protected enrollment period.
The new insurance company may require medical underwriting. Depending on its underwriting guidelines and your medical history, the company may approve the application, decline it, or offer coverage at a different premium when permitted.
Do I Have to Wait Until Medicare Annual Enrollment?
No. The Medicare Annual Enrollment Period from October 15 through December 7 does not create a special opportunity to switch Medicare Supplement plans without underwriting.
That enrollment period primarily applies to:
- Medicare Advantage plans
- Medicare Part D prescription drug plans
- Switching between Original Medicare and Medicare Advantage
It is not an annual Medicare Supplement Open Enrollment Period.
Television commercials about Medicare enrollment can make people believe every type of Medicare coverage follows the same calendar. Medicare Supplement plans operate under different rules.
If you already have a Medicare Supplement plan and want another one, you generally do not need to wait until October. However, medical underwriting may still apply.
What Is the Medicare Supplement Open Enrollment Period?
Your Medicare Supplement Open Enrollment Period is a six-month period that generally begins the first month you are both:
- Age 65 or older
- Enrolled in Medicare Part B
During this six-month period, Medicare Supplement insurance companies generally cannot:
- Deny your application because of your health
- Charge you more because of a medical condition
- Require you to pass medical underwriting
- Refuse to cover you because you have used healthcare services
This is usually the easiest time to purchase or switch Medicare Supplement plans.
Your six-month Medigap Open Enrollment Period does not repeat every year. After it ends, your ability to change coverage may depend on medical underwriting, guaranteed-issue rights, and the laws in your state.
What Is Medicare Supplement Medical Underwriting?
Medical underwriting is the process an insurance company uses to determine whether it will accept an application submitted outside a protected enrollment period.
The application may ask about:
- Recent hospitalizations
- Upcoming surgery or medical treatment
- Cancer treatment
- Heart or circulatory conditions
- Lung disease
- Kidney disease
- Diabetes complications
- Prescription medications
- Recent use of home healthcare
- Residence in a nursing facility
- Other serious or ongoing medical conditions
Underwriting guidelines are not identical among insurance companies. One company may consider an applicant eligible while another company may not.
That does not mean someone should submit applications randomly. Reviewing the underwriting requirements before applying can help avoid unnecessary denials and identify the companies most likely to consider the application.
In Pennsylvania, medical underwriting generally applies when changing Medicare Supplement coverage after the six-month Open Enrollment Period unless the applicant has a guaranteed-issue right.
When Can I Switch Without Medical Underwriting?
You may be able to switch Medicare Supplement plans without medical underwriting when you have a guaranteed-issue right.
Common situations that may create federal Medigap protections include:
- Certain employer, retiree, COBRA, or union coverage that supplements Medicare is ending
- Your Medicare Advantage plan leaves Medicare or stops serving your area
- You move out of a Medicare Advantage or Medicare SELECT service area
- Your Medicare Supplement company becomes insolvent or your coverage ends through no fault of your own
- You qualify for a Medicare Advantage trial right
- A company violated applicable rules or materially misled you
The exact Medicare Supplement plans you may purchase and the application deadline depend on the situation.
Many federal guaranteed-issue periods allow you to apply before your existing coverage ends and continue for a limited time afterward. Some protections end no more than 63 days after the previous coverage terminates.
Keep all termination letters, notices, emails, envelopes, and claim denials that might prove you have a guaranteed-issue right.
A premium increase by itself does not normally create a federal guaranteed-issue right.
What Is a Medicare Advantage Trial Right?
A trial right may allow certain people to leave Medicare Advantage and obtain Medicare Supplement coverage without medical underwriting.
You may have a trial right if:
- You joined Medicare Advantage when first eligible for Medicare at age 65 and return to Original Medicare within the first year
- You dropped a Medicare Supplement policy to try Medicare Advantage for the first time and return within the first year
The Medicare Supplement policy choices available under a trial right depend on your particular situation.
Leaving Medicare Advantage also requires using an appropriate Medicare Advantage enrollment or disenrollment period. Therefore, do not cancel or change coverage until the timing and your Medicare Supplement eligibility have been confirmed.
Can State Law Give Me Additional Switching Rights?
Yes. Some states provide additional Medicare Supplement protections beyond federal law.
Depending on the state, these protections may include:
- Birthday enrollment periods
- Policy-anniversary enrollment periods
- Year-round guaranteed-issue rights
- Limited opportunities to change to an equal or lower-benefit plan
- Additional protections for people under age 65
The rules differ considerably. A birthday rule in one state may allow a change only to the same plan letter, while another state may allow a change to a plan with equal or fewer benefits.
Never assume that a rule from another state applies where you live. Verify the current requirements with your state insurance department or an experienced Medicare broker.
Can I Switch From Plan G to Plan N?
Yes. You can apply to switch from Medicare Supplement Plan G to Plan N.
People commonly consider this change because Plan N may offer a lower monthly premium. However, Plan N has different cost-sharing requirements.
Plan N may require:
- Up to a $20 copay for certain office visits
- Up to a $50 emergency-room copay when the visit does not result in an inpatient admission
- Personal responsibility for qualifying Medicare Part B excess charges where they are permitted
Pennsylvania prohibits healthcare providers from billing Medicare beneficiaries for Part B excess charges. That means the excess-charge difference between Plan G and Plan N is generally not a concern when receiving care in Pennsylvania.
Changing from Plan G to Plan N may require medical underwriting unless you are still within your Medigap Open Enrollment Period or qualify for another protection.
Compare the annual premium savings with the benefits you would give up before changing plans.
Can I Switch From Plan N to Plan G?
Yes, you can apply to switch from Plan N to Plan G.
Plan G provides broader standardized coverage by eliminating Plan N’s office and emergency-room copays and covering qualifying Part B excess charges where they are permitted.
Because Plan G provides additional benefits, medical underwriting may apply when moving from Plan N to Plan G outside a protected enrollment period.
Do not assume that paying a higher premium automatically gives you the right to upgrade. The new company must approve the application when underwriting applies.
Can I Change Companies and Keep the Same Plan?
Yes. You may be able to change Medicare Supplement insurance companies while keeping the same standardized plan letter.
For example, you could switch:
- From one company’s Plan G to another company’s Plan G
- From one company’s Plan N to another company’s Plan N
The standardized medical benefits of the same plan letter are generally the same regardless of which company sells the policy. However, companies can differ in:
- Premiums
- Household discounts
- Underwriting requirements
- Rate-increase history
- Customer service
- Administrative procedures
Changing companies usually requires a new application. Medical underwriting may apply even when you are keeping the same plan letter.
What Is the Safest Way to Switch Medicare Supplement Plans?
The most important rule is simple:
Do not cancel your current Medicare Supplement policy before the new policy has been approved.
A safe switching process generally includes:
- Review your current benefits and premium.
- Compare the new plan’s benefits, rate, discounts, and company.
- Determine whether medical underwriting or guaranteed issue applies.
- Submit the new Medicare Supplement application.
- Wait for written approval from the new insurance company.
- Confirm the new policy’s effective date.
- Review the new policy during the 30-day free-look period.
- Cancel the old policy only after the new coverage is approved and you have decided to keep it.
Cancelling the current policy too early can leave you without supplemental coverage if the new application is declined or delayed.
How Does the 30-Day Free-Look Period Work?
When you switch Medicare Supplement policies, you have 30 days to decide whether to keep the new policy. Medicare calls this the free-look period.
The free-look period begins when you receive the new Medicare Supplement policy.
During this period:
- Keep your previous policy active
- Review the new policy carefully
- Confirm the benefits and premium
- Make sure the new coverage is what you expected
- Expect to pay both policy premiums for the month when both policies are active
Once you cancel the old Medicare Supplement policy, you may not be able to get it back.
Can a New Policy Delay Coverage for a Pre-Existing Condition?
Possibly.
If you have had your current Medigap policy for less than six months, a new policy may impose a waiting period for coverage of a pre-existing condition. Prior creditable coverage may reduce that waiting period.
If you have had your current policy for more than six months and the new policy provides the same benefits, the new company generally cannot impose a pre-existing-condition waiting period after agreeing to issue the replacement policy.
This is another reason to review the replacement rules before changing coverage.
When Might Switching Medicare Supplement Plans Make Sense?
Changing plans may be worth investigating when:
- Your premium has increased significantly
- Comparable coverage is available at a lower rate
- You qualify for a household discount
- Your current plan provides benefits you no longer value
- You want different standardized benefits
- You are dissatisfied with the insurance company
- You have a guaranteed-issue opportunity
- Your state provides a special switching right
A lower initial premium is not the only factor to consider. Rate history, underwriting, discounts, and the benefits you will gain or lose also matter.
When Might Staying With Your Current Plan Be Better?
Switching is not always the right decision.
Keeping your current coverage may make sense when:
- You cannot qualify for the new policy
- The savings are relatively small
- The new rate is based on a temporary discount
- You would lose valuable benefits
- You have an older policy that is no longer available
- The new company has concerning rate patterns
- You are satisfied with your current coverage and premium
A Medicare Supplement review should determine whether a change creates meaningful long-term value—not simply whether another company is a few dollars cheaper today.
The Bottom Line
When can I switch my Medicare Supplement plan? In many states, you can apply at any time during the year.
However, applying does not guarantee approval.
Outside your six-month Medicare Supplement Open Enrollment Period, an insurance company may use medical underwriting unless you have a guaranteed-issue right or another protection under state law.
You do not need to wait for Medicare’s fall Annual Enrollment Period to apply. Most importantly, never cancel your current policy until the replacement policy has been approved and you have decided to keep it.
Frequently Asked Questions
Can I switch my Medicare Supplement plan anytime?
In many states, you can apply at any time. However, medical underwriting may apply, and the insurance company may decline your application unless you have a protected enrollment right.
Do I have to wait until October to switch Medicare Supplement plans?
No. The October 15 through December 7 Annual Enrollment Period does not control ordinary Medicare Supplement plan changes.
Can I be denied when switching Medicare Supplement plans?
Yes. Outside Medigap Open Enrollment or a guaranteed-issue situation, an insurance company may decline an application based on its underwriting requirements.
Does a rate increase let me switch without underwriting?
Usually not. A premium increase alone does not generally create a federal guaranteed-issue right.
Can I switch companies but keep Plan G or Plan N?
Yes. You can apply for the same standardized plan through another company. Medical underwriting may still apply.
Should I cancel my current policy before applying?
No. Keep your current policy until the new application is approved, the effective date is confirmed, and you have decided to keep the replacement policy.
What is the Medicare Supplement 30-day free-look period?
It gives you 30 days after receiving the new policy to decide whether to keep it. You will generally pay both premiums while both policies remain active.
Can I switch plans if I have health problems?
You can apply, but approval may depend on the insurance company’s underwriting guidelines unless you qualify for guaranteed issue or another enrollment protection.
Related Medicare Topics
- When Can I Switch My Medicare Supplement Plan?
- Can I Switch Medicare Supplement Companies Without Losing Coverage?
- How Long Does Medicare Supplement Approval Take?
- My Medicare Supplement Rate Went Up—What Can I Do?
- Can I Lower My Medicare Supplement Premium?
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