When your plan is discontinued or leaves your county

This happens most years to some plans. An insurer decides to stop offering a particular Medicare Advantage or Part D plan, or pulls it out of certain counties, and everyone enrolled in it has to move to something else. If you got a letter telling you this is happening to your plan, here is what it means and what you're entitled to do about it.

Why plans get discontinued

Insurers review their Medicare plans every year and decide, county by county, whether to keep offering each one. A plan might not have enrolled enough members to be worth continuing, its costs might have shifted, or the insurer might be consolidating several similar plans into one. Whatever the reason, this is a decision made at the plan level, not something caused by anything you did, and it's common enough that Medicare has a standard process for handling it.

You'll get a notice

When a plan is ending or leaving your county, Medicare requires the insurer to notify everyone affected in writing before the change takes effect, explaining that the plan is ending and what your options are. This notice is usually sent well before your coverage actually ends, so you have time to act rather than being caught by surprise on the plan's last day. If you've received a letter like this, it's worth reading closely rather than setting aside — it will typically include a deadline and some guidance on what happens if you don't choose a new plan yourself.

It doesn't have to wait for AEP

This is the part people don't always realize. If your plan is ending, you're not stuck waiting for October 15 to do anything about it. The Special Enrollment Period triggered by a plan termination is available regardless of what time of year the termination happens, and it gives you a defined window around the end date to pick a new plan and enroll. Acting during that window, rather than assuming you have to wait, is what keeps your coverage continuous instead of leaving a gap.

What happens if you don't choose a new plan

If you don't actively pick a new plan before your current one ends, you're generally not left with no coverage at all — Medicare typically defaults you back to Original Medicare, or in some cases a similar replacement plan from the same insurer, depending on the specifics of the termination. But a default option isn't the same as one chosen to fit your doctors and prescriptions, so it's worth using the window to make an active choice rather than letting the default happen.

If you had a Medigap policy alongside your plan

A plan termination like this most often affects a Medicare Advantage or Part D plan directly. If you separately had a Medigap policy paired with Original Medicare, that policy generally isn't affected by a Part D plan ending — you'd just be choosing a new Part D plan to pair with the Medigap and Original Medicare coverage you already have. It's worth being clear on which piece of your coverage the termination notice is actually about, since that determines how much of your overall coverage you need to replace.

Don't wait until the last minute

The Special Enrollment Period around a plan termination has a defined window, and while it gives you more time than scrambling on the last day, it isn't indefinite. Comparing replacement plans takes a bit of time if you want to do it against your actual doctors and prescriptions rather than picking whatever looks familiar. Starting as soon as you get the notice, rather than after your current plan has already ended, keeps your coverage continuous instead of leaving a gap between plans.

What to do with your notice

Hold onto the letter — it will have your termination date and details specific to your plan. Bring your current medication list and the doctors you see regularly to the conversation about what comes next, since those are what determine which replacement plan actually fits, not just what's available in your county.