Medigap Guaranteed Issue Rights and When They Apply

What Are Medigap Guaranteed Issue Rights?

Medigap guaranteed issue rights, sometimes called "Medigap protections", are specific situations in which a Medicare Supplement (Medigap) insurance company must sell you a policy, cannot charge you a higher premium because of your health history, and cannot impose a waiting period for pre-existing conditions. These rights protect you from being turned away or priced out of coverage when your situation changes.

Under ordinary circumstances, insurers in most states can use medical underwriting outside of your initial enrollment window, reviewing your health history and potentially denying your application or charging more based on prior conditions. Guaranteed issue rights remove that barrier during qualifying events. Knowing when they apply, and how to act within the time limit, can prevent an unwanted coverage gap.

This guide covers every major trigger event, which Medigap plans you can choose, the 63-day deadline you must not miss, and how state rules may give you even stronger protections.

Your Medigap Open Enrollment Period: The Broadest Protection

The strongest guaranteed issue protection is your Medigap Open Enrollment Period (OEP). It begins the month you turn 65 and are enrolled in Medicare Part B, and it lasts six months. During this window, every insurer selling Medigap policies in your state must offer you any plan it sells, at the same price it charges a healthy applicant of the same age, regardless of any health conditions you have.

This six-month window is the best time to enroll because it carries the fewest restrictions. Once it closes, insurers in most states can apply full medical underwriting. If you are approaching 65, our guide for people turning 65 walks through every step of your first Medicare enrollment season.

If you delayed Part B because you were covered through an active employer or union plan, your Medigap OEP starts when your Part B coverage begins, not when you turned 65. Keep that distinction in mind when you eventually retire or lose the employer coverage.

Qualifying Events That Trigger Guaranteed Issue Rights

Beyond the initial Open Enrollment Period, federal law requires Medigap insurers to grant you guaranteed issue protections when specific life events occur. The major qualifying events are:

• You lose employer or union coverage that supplemented Medicare. If your employer plan ends due to retirement, job loss, or the plan closing, you qualify.
• You leave a Medicare Advantage plan within the first 12 months of joining, your federal "trial right." This lets you return to Original Medicare and enroll in Medigap without underwriting.
• Your Medicare Advantage plan leaves Medicare or stops serving your area. You cannot be forced to go without Medigap access if your plan exits the market.
• You move out of your Medicare Advantage or Medicare SELECT plan's service area and the plan cannot cover you in your new location.
• Your Medigap insurer becomes insolvent or otherwise stops covering you through no fault of your own.
• Your Medigap insurer misled you or committed fraud and a court or regulator finds that you were harmed, entitling you to a replacement policy.

If you are considering moving from a Medicare Advantage plan back to Original Medicare, our detailed guide on switching from Advantage to Medigap covers the process step by step.

Which Medigap Plans Are Available Under Guaranteed Issue?

Federal law sets a minimum standard: during a guaranteed issue event, insurers must offer you at least Medigap Plan A. For most qualifying events, the available plans expand to include Plans A, B, D, G, K, and L. The exact selection can depend on which qualifying event applies to you, so confirm with your insurer or a SHIP counselor.

If you became eligible for Medicare before January 1, 2020, you may also be able to choose Medicare Supplement Plan F, which covers the widest range of out-of-pocket costs, or Plan C. Beneficiaries who first became eligible on or after January 1, 2020 cannot purchase Plan F or C at all, even under guaranteed issue, due to a federal law change that took effect that year.

Many people in a guaranteed issue situation choose Plan G, which covers nearly everything Plan F does except the annual Part B deductible. For a side-by-side look at your most popular options, see our breakdown of Medigap Plan G vs Plan N.

State laws can expand these choices further. Some states require insurers to offer more plan types than federal minimums. Check with your state insurance commissioner or a SHIP counselor for rules specific to where you live.

What Guaranteed Issue Rights Do Not Cover

Guaranteed issue rights are meaningful protections, but they have limits worth understanding:

• They do not freeze your premium forever. Insurers can still raise your Medigap premium over time due to age, inflation, or general rate increases allowed in your state. Guaranteed issue only prevents the insurer from charging you more at enrollment because of your health.
• They do not apply to Medicare Advantage plans. Medicare Advantage (Part C) plans have their own separate enrollment rules. Guaranteed issue rights are specific to Medigap (Medicare Supplement) policies.
• They do not include prescription drug coverage. Medigap plans do not cover prescription drugs. If you need Part D, you will need to enroll separately. Our overview of prescription coverage options explains how Part D works alongside Medigap.
• They may not cover every plan type in every situation. The specific plans you can access depend on which qualifying event applies. Federal law sets a floor; your actual choices may be broader or slightly different.

Still weighing Original Medicare plus Medigap against Medicare Advantage? Our guide on Medicare vs. Medicare Advantage walks through the key trade-offs. And for a broader overview of how all the pieces fit together, see our senior plan guide.

State Protections That Go Beyond Federal Law

Federal law sets the floor, but many states have enacted stronger guaranteed issue protections. A few notable examples:

• Year-round open enrollment: Some states, including New York and Connecticut, require Medigap insurers to accept applicants year-round regardless of health status. Residents of those states effectively have guaranteed issue rights at any time.
• Birthday rules: Several states (including California, Idaho, Illinois, Louisiana, Missouri, Nevada, Oklahoma, and Oregon, among others) allow you to switch to a Medigap plan with equal or lesser benefits around your birthday each year, without medical underwriting. Rules vary by state.
• Anniversary rules: Some states allow a similar annual switch window tied to your policy anniversary date rather than your birthday.

State rules change over time, and this list is not exhaustive. Your State Health Insurance Assistance Program (SHIP) offers free, unbiased counseling and can confirm the exact protections in your state. Find your local SHIP through Medicare.gov.

To compare all the plan types available in your area and think through your options in a structured way, see our guide to comparing senior plan options.