Medicare Supplement

The Medigap Window Most Minneapolis Retirees Only Get Once

In Minneapolis, one of the most important Medicare decisions you'll ever make quietly starts ticking the month you turn 65 and enroll in Medicare Part B. It's called the Medigap Open Enrollment Period, and it lasts just six months. During that window, you have rights you may never have again.

Miss it, and the rules change — sometimes in ways that surprise people years later, when a health issue makes them want to switch plans and they discover they can't easily do so.

What the Medigap Open Enrollment Period actually is

A Medigap policy (also called Medicare Supplement Insurance) is private insurance that helps pay some of the out-of-pocket costs Original Medicare leaves behind — things like coinsurance and hospital costs.

The Medigap Open Enrollment Period is a one-time, six-month window set by federal law. It starts the first month you are age 65 or older AND enrolled in Medicare Part B. Both conditions have to be true for the clock to start.

During those six months, you have what's called a "guaranteed issue" right. That means an insurance company:

• Must sell you any Medigap policy it offers in your state.
• Cannot charge you more because of your health history.
• Cannot make you wait for coverage of most conditions (a limited pre-existing condition look-back can apply if you didn't have prior creditable coverage).

Why this window matters so much

Outside of this window, Medigap works very differently from the rest of Medicare. There's no yearly "open enrollment" for Medigap the way there is for Medicare Advantage or Part D.

If you try to buy or switch a Medigap policy after your six months end, insurers in most states can use medical underwriting. They can ask about your health, look at your records, and decide:

• To charge you a higher premium,
• To make you wait for coverage of pre-existing conditions, or
• To turn you down entirely.

There are a handful of limited "guaranteed issue" situations later on — for example, if a plan you had ends coverage in your area, or if you drop a Medicare Advantage plan within the first year of joining. But those are narrow exceptions, not a second open window.

How this works in Minneapolis

Minneapolis is in Hennepin County, where Medicare beneficiaries have access to Original Medicare plus a range of private plans, including Medigap policies sold by companies licensed in Minnesota.

Here's an important local twist: Minnesota is one of only three states (along with Massachusetts and Wisconsin) that does not use the standard federal lettered Medigap plans (like Plan G or Plan N). Instead, Minnesota uses its own standardized Medigap plans — typically a "Basic" plan and an "Extended Basic" plan, with optional riders you can add on.

That means if you're comparing information you found on a national Medicare site with what a Minnesota agent offers, the plan names and structures may look different. The core rules about your six-month enrollment window, though, are the same federal rules that apply everywhere.

Common mistakes to avoid

A few timing mistakes come up again and again:

• Delaying Part B without a reason. If you delay Part B enrollment, your Medigap window is also delayed — and if you eventually enroll in Part B years later, you'll only then get your six months. Meanwhile, you may face a Part B late enrollment penalty.
• Assuming Medicare Advantage and Medigap are interchangeable. They're not. You can't have both at the same time. If you pick a Medicare Advantage plan at 65 and later decide you'd rather have Original Medicare with a Medigap policy, you may face underwriting when you try to buy Medigap.
• Waiting to "see if you need it." By the time a health issue makes Medigap feel necessary, that same issue may make it harder or costlier to get.

How to decide during your six months

Because this is a one-time window, it's worth slowing down and doing three things:

1. Confirm the exact start and end dates of your six-month period. It's tied to your 65th birthday month and your Part B start date. 2. Compare Minnesota's standardized Medigap plan choices side by side. Look at monthly premiums, what each plan covers, and whether the insurer uses "issue-age," "attained-age," or "community" pricing — that affects how your premium changes over time. 3. Think about how Medigap works with Part D. Medigap does not cover prescription drugs. If you want drug coverage, you'll generally need a stand-alone Part D plan. In 2026, Part D has a $2,100 out-of-pocket cap and a maximum deductible of $615, and the old "donut hole" phase has been eliminated.

Where to get unbiased help

You don't have to figure this out alone, and you shouldn't rely on a single agent's pitch.

• Medicare.gov has the official Medigap rules and a plan-finder tool.
• 1-800-MEDICARE (1-800-633-4227) can answer questions 24/7.
• Minnesota's State Health Insurance Assistance Program (SHIP) — known locally as the Senior LinkAge Line® at 1-800-333-2433 — offers free, one-on-one Medicare counseling and is not tied to any insurance company.