What your plan notice, Open Enrollment, and the Medigap rules really mean for your choices this fall.
Check Your Mailbox
If you have a Medicare Advantage plan, an important letter may already be sitting on your kitchen counter.
Every fall, plans mail an Annual Notice of Change explaining what will be different next year. This year, many people are also receiving something more serious: a non-renewal notice saying their plan will not be offered in 2027.
Several major insurers are reducing service areas or discontinuing Medicare Advantage plans for 2027. If your plan is one of them, your coverage ends December 31.
Here’s what most people don’t realize:
That letter may come with a right you rarely get in Medicare. And it has a deadline.
The Problem: The Medicare Choice That’s Hard to Undo
Most people believe Medicare works like this:
“If I don’t like my plan, I’ll just switch next year.”
That’s only partly true.
During Open Enrollment, October 15 through December 7, you can change Medicare Advantage plans, switch drug plans, or move from Medicare Advantage back to Original Medicare.
But there’s a catch many people learn too late.
If you return to Original Medicare, you’ll likely want a Medicare Supplement (Medigap) policy to help cover what Original Medicare doesn’t. Original Medicare has no annual limit on your out-of-pocket costs. Medigap helps fill those gaps.
And Medigap has its own rules.
Your one-time Medigap window
You get a 6-month Medigap Open Enrollment Period. It starts the first month you have Medicare Part B and are 65 or older.
During those 6 months, you can buy any Medigap policy sold in your state, regardless of your health.
After that window closes, the rules change. In most states, a Medigap insurer can ask health questions and may charge you more or decline to sell you a policy, unless you have a special protection called a guaranteed issue right.
That’s the one-way door.
Someone who chose Medicare Advantage at 65 and develops health conditions later may find it difficult or expensive to get a Medigap policy at 70 or 75.
The Solution: Know When the Door Opens Again
Federal law gives you guaranteed issue rights in specific situations. When you have one, a Medigap insurer:
- Must sell you certain Medigap policies
- Cannot deny you because of your health
- Cannot charge you more because of past or present health problems
- Cannot impose a waiting period for pre-existing conditions
Three of these situations matter most right now.
1. Your Medicare Advantage plan is leaving
If your plan stops participating in Medicare or stops serving your area, you have a guaranteed issue right to buy Medigap Plan A, B, D, G, K, or L.
Plans C and F are also available if you were eligible for Medicare before January 1, 2020.
This is why your non-renewal letter matters. For someone who has been in Medicare Advantage for years, this may be a rare chance to move to Medigap without health questions.
2. You joined Medicare Advantage at 65 and are within your first year
If you joined a Medicare Advantage plan when you first became eligible for Medicare at 65, you have a 12-month trial right.
If you leave the plan within your first year, you can buy any Medigap policy sold in your state with no health screening.
3. You dropped Medigap to try Medicare Advantage for the first time
If you had a Medigap policy, dropped it to join a Medicare Advantage plan for the first time, and leave within 12 months, you can get your same Medigap policy back if the company still sells it.
If it’s no longer available, you can buy certain other Medigap plans.
Important: This trial right applies only the first time you join a Medicare Advantage plan.
The Mechanism: Your 5-Step Medicare Coverage Check
Step 1: Open every Medicare letter
Look for two documents:
- Annual Notice of Change: what’s changing in your plan for 2027
- Non-renewal notice: your plan will not be offered in 2027
Keep both. A non-renewal notice can serve as proof of your guaranteed issue right when you apply for Medigap.
Step 2: Identify which situation you’re in
| Your situation | What it may mean |
|---|---|
| Your Medicare Advantage plan is leaving | You may have a guaranteed issue right to certain Medigap plans |
| You joined Medicare Advantage at 65 and are within your first 12 months | You may buy any Medigap policy with no health screening |
| You dropped Medigap to try Medicare Advantage for the first time, within 12 months | You may get your old Medigap policy back |
| None of the above | Medigap insurers in most states may ask health questions |
Step 3: Mark your deadlines
- October 15 to December 7, 2026: Medicare Open Enrollment
- December 31, 2026: Coverage ends for discontinued plans
- December 8, 2026 to February 28, 2027: Special Enrollment Period if your plan was discontinued and you need more time
- Guaranteed issue for Medigap: You can generally apply as early as 60 days before your coverage ends, and no later than 63 days after it ends
Missing the 63-day window can mean losing the guaranteed issue protection.
If your plan is discontinued and you don’t choose new coverage, you’ll be returned to Original Medicare. But you won’t automatically have drug coverage.
Step 4: Don’t forget your prescriptions
Medigap policies sold today do not cover prescription drugs. If you move to Original Medicare with Medigap, you’ll generally need a separate Part D drug plan.
Know these 2027 Part D numbers:
- The maximum deductible rises from $615 to $700.
- The annual out-of-pocket cap on covered drugs rises from $2,100 to $2,400.
- Monthly premiums do not count toward that cap.
Also: if you go 63 days or more without creditable drug coverage after you’re first eligible, you may pay a Part D late enrollment penalty for as long as you have drug coverage.
Step 5: If you’re not on Medicare yet, plan your decision at 65 now
If you’re 5 to 10 years from Medicare, this is your advantage. You have time to understand your options before the clock starts.
Ask yourself:
- Do I want flexibility to see any provider nationwide who accepts Medicare, or am I comfortable with a plan network?
- How important is predictable out-of-pocket cost to me?
- If my health changes at 75, will I wish I had chosen differently at 65?
- Will I still be working with employer coverage at 65? That can affect when your Medigap window starts.
There’s no single right answer. Medicare Advantage and Original Medicare with Medigap each have trade-offs. What matters is making the choice on purpose, knowing which doors stay open and which ones may not.
Your Health Coverage Is Part of Your Retirement Plan
Healthcare decisions don’t stay in their own box. They affect your monthly budget, your savings, and your peace of mind for decades.
A Medicare decision made in a rush in December can follow you for the rest of your retirement.
If you received a Medicare letter this fall, or you’re approaching 65 and want to understand your options before you have to choose, let’s look at it together.
Schedule a Wealth Clarity Call. We’ll review where you stand, which rights may apply to you, and how your healthcare choices fit into your overall retirement income plan, so your next decision is made with clarity, not pressure.
This article is for educational purposes only and does not constitute individual insurance, tax, legal, or investment advice. Medicare and Medigap rules vary by state and individual circumstances. Please review your plan notices carefully and consult a qualified professional before making coverage decisions.
