A trusted source for Medicare news and education from the AMAC Foundation.

Medicare - General

That Medicare Letter You Received Could Affect Your 2027 Coverage — Here's What to Look For

(Source: Medicare.gov, Centers for Medicare & Medicaid Services)

Medicare Open Enrollment is just around the corner, and millions of beneficiaries should have already received an important notice explaining how their coverage may change in 2027.

The document, called the Annual Notice of Change (ANOC), is sent each fall by Medicare Advantage and Part D prescription drug plans. It outlines changes to premiums, deductibles, benefits, and other coverage details that will take effect January 1.

For beneficiaries who are happy with their current coverage, it may be tempting to put the letter aside. But even if you have no plans to switch, reviewing it could help you avoid unexpected costs next year.

What Could Be Changing?

Medicare plans can make adjustments to their coverage and costs each year, and those changes aren't always reflected in the monthly premium.

Some of the most important things to review include:

  • Monthly premiums and deductibles: Your plan may cost more or less in 2027.
  • Prescription drug coverage: Medications you currently take could move to a different pricing tier or face new coverage requirements.
  • Doctors and hospitals: Medicare Advantage provider networks may change, potentially affecting where you can receive care.
  • Copayments and coinsurance: The amount you pay for appointments, treatments, and other services could increase.
  • Additional benefits: Dental, vision, hearing, and other supplemental benefits may be adjusted.

A plan that worked well in 2026 may not necessarily offer the same value in 2027.

What If You Didn't Receive the Notice?

According to Medicare, plans generally send their Annual Notice of Change in September.

If you haven't received yours, contact your insurance plan directly and request a copy.

You can also begin comparing 2027 coverage options through Medicare's official Plan Compare tool at Medicare.gov.

When comparing plans, consider your total expected healthcare expenses rather than focusing only on the monthly premium. A lower premium may not translate into lower overall costs if your prescriptions, doctor visits, or other services become more expensive.

Open Enrollment Begins October 15

Medicare's Annual Open Enrollment Period runs from October 15 through December 7, 2026.

During this period, eligible beneficiaries can switch Medicare Advantage plans, change Medicare Part D prescription drug plans, or move between Original Medicare and Medicare Advantage.

Changes made during this enrollment period generally take effect January 1, 2027.

Beneficiaries considering a move from Medicare Advantage to Original Medicare should also investigate Medigap eligibility before making a decision, since the ability to purchase a supplemental policy may be limited depending on the circumstances.

The Bottom Line

You don't necessarily need to change your Medicare coverage every year. But you should understand what you're keeping.

Taking a few minutes to review your Annual Notice of Change and compare available options could help protect both your healthcare coverage and your retirement budget.

Sources: