The Medicare Advantage Annual Enrollment Period is an important time for Medicare beneficiaries to review their existing healthcare coverage, compare available plans, and make changes for the upcoming year. Understanding the enrollment dates, eligibility requirements, and available options can help beneficiaries make informed decisions about their Medicare coverage.
Every year, Medicare allows eligible individuals to review their health and prescription drug coverage during a specific enrollment window. This period provides an opportunity to switch Medicare Advantage plans, return to Original Medicare, or make other permitted coverage changes.
For existing Medicare Advantage members, understanding the Annual Enrollment Period (AEP) is particularly important because insurance companies may update their plan premiums, benefits, provider networks, and prescription drug coverage each year.
What Is the Medicare Advantage Annual Enrollment Period?
The Medicare Advantage Annual Enrollment Period, also known as the Annual Election Period (AEP), is the yearly period when eligible Medicare beneficiaries can review and change their Medicare health and prescription drug coverage.
The enrollment period runs from October 15 through December 7 every year. Any coverage changes made during this period generally become effective on January 1 of the following year.
During AEP, beneficiaries can evaluate whether their existing Medicare Advantage plan continues to meet their healthcare requirements. They can also compare alternative plans available in their service area.
The Annual Enrollment Period is not limited to individuals who want to change their coverage. Beneficiaries who are satisfied with their existing plans can generally keep their current coverage, provided the plan continues to be offered.
For additional information about available coverage options, visit Medicare Advantage Plans.
When Is the Medicare Advantage Annual Enrollment Period?
The Medicare Advantage Annual Enrollment Period takes place every year between October 15 and December 7.
These dates remain consistent annually, making it easier for beneficiaries to prepare for their Medicare coverage decisions.
Here are the important enrollment dates:
| Important Date | Enrollment Details |
|---|---|
| October 1 | New Medicare plan information generally becomes available for review. |
| October 15 | Annual Enrollment Period begins. |
| December 7 | Last day to submit most AEP coverage changes. |
| January 1 | New coverage generally becomes effective. |
For the 2027 coverage year, the Annual Enrollment Period runs from October 15, 2026, through December 7, 2026. Changes made during this period generally take effect on January 1, 2027.
Beneficiaries should avoid waiting until the final days to review their options. Taking sufficient time to compare plans can help prevent rushed enrollment decisions.
According to Medicare, the plan must receive the enrollment request by December 7 for coverage changes made during AEP to take effect January 1. Official Medicare enrollment information.
Who Can Participate in the Annual Enrollment Period?
The Annual Enrollment Period is available to people with Medicare who want to make permitted changes to their healthcare coverage for the following year.
It is particularly relevant to individuals who are already enrolled in Medicare Advantage or Original Medicare and want to review their available options.
Beneficiaries may use this enrollment period to:
- Review their current Medicare Advantage coverage.
- Compare available Medicare Advantage plans.
- Switch from one Medicare Advantage plan to another.
- Move from Medicare Advantage to Original Medicare.
- Switch from Original Medicare to Medicare Advantage.
- Join, change, or drop a Medicare Part D prescription drug plan, depending on their existing coverage.
However, eligibility requirements still apply when joining a Medicare Advantage plan. Generally, individuals must have both Medicare Part A and Part B and live within the plan’s service area.
Understanding these requirements before submitting an enrollment request can help beneficiaries avoid unnecessary delays.
What Changes Can You Make During AEP?
The Medicare Advantage Annual Enrollment Period provides several opportunities to review and adjust healthcare coverage.
Understanding these options can help beneficiaries determine whether they need to make changes for the upcoming coverage year.
1. Switch to Another Medicare Advantage Plan
Beneficiaries enrolled in an existing Medicare Advantage plan can switch to another available Medicare Advantage plan during AEP.
Different plans may have different monthly premiums, deductibles, copayments, provider networks, and additional benefits.
Before switching, review the plan’s coverage details and confirm that its healthcare services align with your requirements.
2. Return to Original Medicare
Beneficiaries can leave their Medicare Advantage plan and return to Original Medicare during the Annual Enrollment Period.
Original Medicare consists of Medicare Part A and Part B. Individuals choosing this option may also consider enrolling in a separate Medicare Part D prescription drug plan.
They may also want to explore Medicare Supplement Insurance, commonly known as Medigap, to help cover certain out-of-pocket expenses.
However, Medigap enrollment rights and eligibility requirements are different from Medicare Advantage enrollment rules. Switching to Original Medicare does not automatically guarantee that someone can purchase every Medigap policy without medical underwriting.
Learn more about Medicare Supplement Insurance before making a coverage decision.
3. Switch from Original Medicare to Medicare Advantage
Individuals with Original Medicare can also use AEP to enroll in an available Medicare Advantage plan if they meet the applicable eligibility requirements.
Medicare Advantage plans are offered by private insurance companies approved by Medicare. They provide coverage for Medicare Part A and Part B services and may include additional benefits or prescription drug coverage.
Before enrolling, beneficiaries should review the plan’s provider network, prescription coverage, costs, and restrictions.
4. Review Prescription Drug Coverage
Prescription drug coverage is another important consideration during the Annual Enrollment Period.
Beneficiaries should review whether their current plan covers their medications and whether the associated costs are changing for the upcoming year.
Those with Original Medicare can join, switch, or drop a standalone Medicare Part D plan during AEP. Medicare Advantage members should check whether their plan includes prescription drug coverage and review its updated formulary.
Why Should You Review Your Medicare Advantage Plan Every Year?
Reviewing Medicare Advantage coverage annually is important because plan details can change from one year to the next.
A plan that previously met your healthcare requirements may have different costs, benefits, or network arrangements in the upcoming year.
Here are some important reasons to review your coverage.
Changes in Monthly Premiums
Medicare Advantage plans may adjust their monthly premiums annually. Some plans may have different premium amounts for the upcoming coverage year.
Beneficiaries should review the updated premium information and consider how it fits into their healthcare budget.
Changes in Out-of-Pocket Costs
Deductibles, copayments, and coinsurance amounts can change annually.
Reviewing these costs can help beneficiaries understand how much they may need to pay when accessing covered healthcare services.
It is also important to understand the plan’s annual out-of-pocket maximum for covered Part A and Part B services.
Provider Network Changes
Medicare Advantage plans generally use provider networks, and the participating doctors, hospitals, and healthcare facilities may change.
Beneficiaries should confirm that their preferred healthcare providers remain within the plan’s network for the upcoming year.
This is especially important for individuals who receive regular care from specific specialists or medical facilities.
Prescription Drug Formulary Changes
Prescription drug coverage can also change annually.
Plans may update their covered medication lists, pharmacy arrangements, and cost-sharing requirements.
Reviewing the updated formulary can help beneficiaries understand whether their prescribed medications remain covered and whether alternative coverage may be more suitable.
Changes in Additional Benefits
Some Medicare Advantage plans offer additional benefits, including dental, vision, hearing, and wellness-related services.
The availability and details of these benefits can change annually. Beneficiaries should review the official plan documents instead of assuming that previous benefits will remain unchanged.
How to Compare Medicare Advantage Plans During AEP
Comparing Medicare Advantage plans requires more than looking at monthly premiums. Beneficiaries should evaluate the complete coverage structure before selecting a plan.
Consider the following factors during your annual review:
1. Monthly Premiums: Compare the monthly premium of each available plan and understand whether additional costs apply.
2. Annual Deductibles: Review the amount you must pay before certain covered services begin receiving plan coverage.
3. Out-of-Pocket Maximum: Check the maximum amount you may have to pay for covered Medicare Part A and Part B services during the year.
4. Provider Networks: Confirm whether your preferred doctors, specialists, hospitals, and other healthcare providers participate in the plan.
5. Prescription Drug Coverage: Review your medications, formulary requirements, pharmacy options, and expected prescription expenses.
6. Additional Benefits: Compare available dental, vision, hearing, and other supplemental benefits.
7. Coverage Restrictions: Understand referral requirements, prior authorization rules, and other conditions that may affect access to healthcare services.
Beneficiaries should also review the plan’s Annual Notice of Change (ANOC) and Evidence of Coverage (EOC). These documents explain important coverage updates and the terms of the plan for the next year.
For further guidance, explore Enrollment Periods for Medicare Advantage Plans.
What Happens If You Miss the Annual Enrollment Period?
Missing the Medicare Advantage Annual Enrollment Period may limit your ability to make certain coverage changes.
If you do not submit a permitted change by December 7, your existing plan will generally continue into the following year if it remains available and you remain enrolled.
However, you should not assume that your existing plan will maintain the same premiums, benefits, provider networks, or coverage conditions.
There may still be other enrollment opportunities depending on your circumstances.
For example, individuals already enrolled in Medicare Advantage may qualify to make a change during the Medicare Advantage Open Enrollment Period, which runs from January 1 through March 31.
Certain beneficiaries may also qualify for a Special Enrollment Period because of specific circumstances, such as moving outside their plan’s service area or losing qualifying health coverage.
The rules and deadlines depend on the circumstances. Beneficiaries should confirm their eligibility before attempting to change coverage outside the Annual Enrollment Period.
Annual Enrollment Period vs. Medicare Advantage Open Enrollment Period
The Annual Enrollment Period and Medicare Advantage Open Enrollment Period are two different enrollment opportunities.
Although both allow certain Medicare Advantage changes, their eligibility requirements and available options are not the same.
| Feature | Annual Enrollment Period | Medicare Advantage Open Enrollment Period |
|---|---|---|
| Dates | October 15 to December 7 | January 1 to March 31 |
| Eligibility | People with Medicare, subject to plan eligibility rules | Individuals already enrolled in Medicare Advantage |
| Switch Medicare Advantage plans | Yes | Yes |
| Switch to Original Medicare | Yes | Yes |
| Switch from Original Medicare to Medicare Advantage | Yes | No |
| Change standalone Part D coverage | Yes, subject to applicable rules | Not generally available to people in Original Medicare |
During the Medicare Advantage Open Enrollment Period, an eligible beneficiary can generally make one change to another Medicare Advantage plan or return to Original Medicare.
If returning to Original Medicare, the beneficiary can also join a separate Medicare drug plan.
Any change made during this period generally becomes effective on the first day of the month after the plan receives the enrollment request.
Understanding the difference between these two enrollment windows is essential when planning Medicare coverage changes.
Conclusion
The Medicare Advantage Annual Enrollment Period provides an important opportunity for beneficiaries to review their existing coverage and make informed healthcare decisions for the upcoming year.
Running from October 15 through December 7, this annual enrollment window allows eligible individuals to switch Medicare Advantage plans, return to Original Medicare, or make permitted prescription drug coverage changes.
Before making a decision, carefully review monthly premiums, deductibles, out-of-pocket maximums, provider networks, prescription drug coverage, and additional benefits. These factors can influence the overall value and suitability of a Medicare Advantage plan.
Beneficiaries should also understand the difference between the Annual Enrollment Period, Medicare Advantage Open Enrollment Period, and Special Enrollment Periods to avoid missing important deadlines.
For additional guidance on Medicare Advantage and Medicare Supplement options, visit Navigating My Medicare and review the available Medicare resources.
Frequently Asked Questions (FAQs)
1. What is the Medicare Advantage Annual Enrollment Period?
The Medicare Advantage Annual Enrollment Period is the yearly period when eligible Medicare beneficiaries can review and change their Medicare coverage. It runs from October 15 through December 7 and generally allows beneficiaries to switch Medicare Advantage plans, return to Original Medicare, or make permitted prescription drug coverage changes.
2. When does new Medicare Advantage coverage begin after AEP?
Coverage changes made during the Annual Enrollment Period generally become effective on January 1 of the following year. For example, changes submitted during the 2026 AEP generally become effective January 1, 2027.
3. Can I switch Medicare Advantage plans every year?
Yes. Eligible beneficiaries can generally switch from one Medicare Advantage plan to another during the Annual Enrollment Period, which runs from October 15 through December 7. They should compare premiums, provider networks, benefits, and prescription coverage before making a change.
4. What happens if I do not change my Medicare Advantage plan during AEP?
If you do not make a change, your existing plan generally continues into the following year if it remains available and you remain enrolled. However, its premiums, benefits, provider networks, and coverage details may change.
5. Can I change my Medicare Advantage plan after December 7?
You may have another opportunity during the Medicare Advantage Open Enrollment Period from January 1 through March 31 if you are already enrolled in a Medicare Advantage plan. Certain qualifying circumstances may also provide access to a Special Enrollment Period. The available options depend on your eligibility.
