Medicare plan notices are arriving now. What to check for 2027
Medicare Advantage and Part D plans send beneficiaries a Plan Annual Notice of Change, or ANOC, each September. The document explains changes in coverage, costs and other plan terms that generally take effect in January.
The notice arrives before Medicare Open Enrollment, which runs from October 15 through December 7, 2026. Changes made during that period generally take effect on January 1, 2027, as long as the plan receives the enrollment request by December 7.
What to check in the notice
Start with the full cost of coverage. Review the monthly premium, annual deductible, copayments, coinsurance, drug costs and any changes to the plan’s maximum out-of-pocket limit. A plan with a low monthly premium can still cost more over a year if medical or prescription expenses rise.
Medicare Advantage enrollees should review the doctors, hospitals and other providers they use most. Provider networks and rules for referrals or prior authorization can change, so beneficiaries should confirm that important physicians and facilities remain available under the plan’s 2027 terms.
Part D enrollees should check pharmacies and prescriptions. Review the plan’s formulary, drug tiers, prior-authorization rules, quantity limits and preferred-pharmacy network. A medication covered in 2026 may not have the same coverage or cost in 2027.
Also review supplemental benefits and coverage limits. Dental, vision, hearing, transportation and over-the-counter benefits can change, as can the conditions attached to those benefits.
What CMS has announced for Part D
CMS says the 2027 national base beneficiary premium is $41.33. That is a national figure used in calculating plan-specific basic Part D premiums; it is not necessarily the amount any individual beneficiary will pay.
CMS’s finalized 2027 standard Part D benefit parameters include a $700 deductible and a $2,400 out-of-pocket threshold. Individual plan costs can differ, and people who qualify for low-income assistance may have different cost-sharing rules.
CMS said it would release the 2027 Medicare Advantage and Part D landscape, final average premiums and other plan information in mid-to-late September after offerings were finalized. Use that final information and Medicare’s plan-comparison tools rather than relying only on last year’s documents or advertisements.
What choices are available during Open Enrollment
During the October 15–December 7 window, beneficiaries can join, drop or switch Medicare Advantage plans, including plans with or without drug coverage. People in Original Medicare can join, drop or switch a Medicare drug plan, and beneficiaries can switch between Original Medicare and Medicare Advantage under the applicable rules.
Moving to Original Medicare may require a separate Part D plan. A beneficiary may also want Medigap coverage, but Medigap eligibility and enrollment rules are separate and can affect when a policy is available and how much it costs.
No one is required to change plans. The practical step is to compare the 2027 terms with your doctors, prescriptions, expected care and household budget before deciding.
A short checklist
- Find the September Annual Notice of Change and read the sections on costs and coverage.
- List the doctors, hospitals, pharmacies and prescriptions that matter most.
- Compare expected yearly costs, including premiums, deductibles, copayments, coinsurance and drug expenses.
- Use Medicare’s plan-comparison tools after final 2027 plan information is available.
- Submit any change by December 7, 2026, if you want coverage beginning January 1, 2027.
If the notice does not arrive, contact the current plan. Medicare can also help beneficiaries compare coverage options. The ANOC is different from the Evidence of Coverage and from Social Security notices about benefits or income-related Medicare adjustments.
Sources
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