How to Switch from Medicare Advantage Back to Original Medicare

Choosing between Medicare Advantage and Original Medicare is not a permanent decision. If you are currently enrolled in a Medicare Advantage plan and find that it no longer meets your needs, you have the option to switch back to Original Medicare. However, the timing and process matter, and there are important considerations around supplemental coverage that you need to understand before making the move.

When You Can Switch: Enrollment Periods

You cannot switch from Medicare Advantage to Original Medicare at just any time. Federal rules establish specific windows during which you are allowed to make this change.

Medicare Advantage Open Enrollment Period (OEP): This runs from January 1 through March 31 each year. During this window, anyone enrolled in a Medicare Advantage plan can:

• Drop their MA plan and return to Original Medicare
• Switch to a different Medicare Advantage plan
• Add or drop a standalone Part D prescription drug plan

Coverage under your new choice takes effect the first of the month after your request is processed. This is the most common period people use to return to Original Medicare.

Annual Enrollment Period (AEP): The AEP runs from October 15 through December 7 each year. During this period, you can also leave your Medicare Advantage plan and switch back to Original Medicare. Changes made during the AEP take effect on January 1 of the following year.

Special Enrollment Periods (SEPs): In certain circumstances, you may qualify for a special enrollment period that allows you to make changes outside of the standard windows. Examples include moving out of your plan's service area, losing employer coverage, or qualifying for a low-income subsidy.

Step-by-Step Process for Switching

Making the transition from Medicare Advantage to Original Medicare involves several steps. Here is a practical walkthrough:

1. Confirm your enrollment period. Make sure you are within the OEP (January 1 to March 31), the AEP (October 15 to December 7), or a qualifying special enrollment period.

2. Disenroll from your Medicare Advantage plan. You can do this by contacting your plan directly, calling Medicare at 1-800-MEDICARE, or visiting the Medicare website to complete the process online. When you disenroll, you are automatically returned to Original Medicare.

3. Enroll in a Part D prescription drug plan. Original Medicare does not include drug coverage, so you will need a standalone Part D plan if you want prescription benefits. You can enroll during the same enrollment period in which you leave your MA plan.

4. Consider purchasing a Medigap policy. Original Medicare has significant cost-sharing gaps, including the 20 percent coinsurance under Part B with no annual out-of-pocket cap. A Medigap (Medicare Supplement) policy can help cover these expenses. However, obtaining one is not always guaranteed, which is discussed below.

5. Verify your coverage effective date. Depending on when you make the switch, your Original Medicare coverage may begin the first of the following month or on January 1 of the next year.

The Medigap Underwriting Challenge

This is where switching from Medicare Advantage to Original Medicare can get complicated. Medigap policies are sold by private insurers, and in most states, they can use medical underwriting to decide whether to sell you a policy and at what price once your initial Medigap open enrollment period has passed.

Your Medigap open enrollment period is a one-time, six-month window that begins when you are both 65 or older and enrolled in Medicare Part B. During this period, insurers must sell you any Medigap policy they offer at the standard rate, regardless of your health. Once this window closes, you lose that guaranteed access.

If you enrolled in Medicare Advantage years ago and are now switching back to Original Medicare, you may find that:

• Insurers can deny your Medigap application based on pre-existing conditions
• Insurers can charge you a higher premium due to your health status
• Some Medigap plans may not be available to you at all

This underwriting risk is one of the most significant factors to weigh when considering a switch. Without a Medigap policy, you are exposed to potentially unlimited out-of-pocket costs under Original Medicare.

Guaranteed-Issue Rights for Medigap

Fortunately, there are specific situations in which federal law gives you guaranteed-issue rights to purchase a Medigap policy without medical underwriting. These rights apply when certain qualifying events occur, such as:

• Your Medicare Advantage plan leaves your area or stops offering coverage
• Your MA plan violated its contract or misled you in its marketing materials
• You joined a Medicare Advantage plan when you first became eligible for Medicare and decide to switch back within 12 months (trial right, discussed below)
• You lose your employer or union group coverage that supplemented Original Medicare

When you have guaranteed-issue rights, insurers must sell you a Medigap policy (typically Plan A, B, C, F, K, or L, depending on your situation) at the standard rate without considering your health history. Understanding whether you qualify for these protections is critical before making your decision.

Trial Rights for New Medicare Beneficiaries

If you joined a Medicare Advantage plan when you first became eligible for Medicare at age 65, you have a one-time trial right. This means you can try the MA plan and, if it does not work for you, switch back to Original Medicare within your first 12 months of MA coverage and still purchase any Medigap policy available in your state on a guaranteed-issue basis.

This trial right also applies if you:

• Dropped a Medigap policy to join a Medicare Advantage plan for the first time
• Want to return to Original Medicare and reinstate your previous Medigap coverage (or buy a new policy) within 12 months

These trial rights provide valuable protection, but they are time-limited. Once the 12-month window closes, you are subject to standard Medigap underwriting rules.

Key Factors to Consider Before Switching

Before you leave Medicare Advantage for Original Medicare, take time to evaluate:

• Your health care needs. Do you need access to providers outside of your MA plan's network? Do you travel frequently and need nationwide coverage?
• Prescription drug costs. Compare your current MA drug coverage to standalone Part D plans available in your area.
• Medigap availability. Research whether you can obtain a Medigap policy and at what cost. Contact insurers in your state to request quotes.
• Total annual costs. Add up premiums for Part B, Part D, and Medigap, plus expected out-of-pocket expenses, and compare that total to what you currently pay under your MA plan.
• Supplemental benefits. Medicare Advantage plans often include dental, vision, hearing, and OTC benefits. You will lose these when you return to Original Medicare.

Plan carefully, especially around Medigap underwriting, so you do not end up with unexpected gaps in your coverage.