If you received a letter stating your Medicare Advantage plan is ending, you do not need to panic. You have guaranteed rights to secure new health coverage before your current benefits expire.
Insurance carriers must maintain your full coverage through December 31, 2026. You can choose a new Medicare Advantage plan or transition back to Original Medicare with supplemental protection.
Acting quickly ensures you avoid gaps in medical care and maintain uninterrupted prescription drug access starting January 1, 2027. Here is everything you need to know to take control.
Understanding Your Plan Non-Renewal Notice and Key Deadlines
When an insurer terminates a Medicare Advantage (MA) plan, federal law requires written notification. Your insurer must mail an official non-renewal notice postmarked by October 2, 2026.
Do not confuse this letter with an Annual Notice of Change (ANOC). Continuing plans mail an ANOC by September 30 each year to summarize routine co-pay and network adjustments.
A non-renewal notice explicitly confirms that your plan will cease operating in your county. Treat this letter as an essential legal document and keep it in a safe place.
Your Coverage Remains Intact Through Year-End
Your terminating plan cannot cancel your benefits prematurely. The carrier must provide full medical and prescription drug coverage through December 31, 2026.
Your existing co-pays, deductibles, doctor networks, and pharmacy benefits remain identical through that final day. You can continue scheduled appointments and treatments without immediate change.
The Two Critical Enrollment Windows
The standard Medicare Annual Open Enrollment Period (AEP) runs from October 15, 2026, through December 7, 2026. Enrolling during AEP ensures your new policy begins January 1, 2027.
Beneficiaries losing their plan also receive a dedicated Plan Non-Renewal Special Enrollment Period (SEP). This window begins December 8, 2026, and lasts through February 28, 2027.
Deciding in December starts coverage January 1, while January applications take effect February 1. If you enroll in February, benefits begin March 1, 2027.
Key Dates and Coverage Timelines
Review the timeline below to align your enrollment date with your preferred coverage start date.
| Enrollment Window | Application Dates | Coverage Effective Date |
|---|---|---|
| Annual Open Enrollment Period (AEP) | October 15 – December 7, 2026 | January 1, 2027 |
| Plan Non-Renewal SEP (Month 1) | December 8 – December 31, 2026 | January 1, 2027 |
| Plan Non-Renewal SEP (Month 2) | January 1 – January 31, 2027 | February 1, 2027 |
| Plan Non-Renewal SEP (Month 3) | February 1 – February 28, 2027 | March 1, 2027 |
If you take no action by December 31, 2026, Medicare automatically transfers you to Original Medicare on January 1, 2027. However, this default transfer does not include prescription drug benefits.
