Medigap Plan F Explained: What It Is, What It Covers, and Who Can Get It

If you’ve been exploring Medicare Supplement Insurance, you’ve likely come across Medigap Plan F. It’s often described as one of the most comprehensive Medigap plans available—but it’s also no longer open to everyone.

This guide breaks down what Medigap Plan F is, how it works, who can still enroll, and how it compares to other Medicare Supplement options, in clear and practical terms.

What Is Medigap Plan F?

Medigap Plan F is a type of Medicare Supplement Insurance policy. Like all Medigap plans, it’s designed to work with Original Medicare (Part A and Part B) to help pay certain out‑of‑pocket costs, such as:

• Deductibles
• Copayments
• Coinsurance

Plan F is known for offering “first-dollar coverage” for Medicare-covered services. In simple terms, if a service is approved by Medicare, Plan F typically pays all remaining costs after Medicare pays its share, leaving you with very little—if anything—to pay out of pocket for covered services.

However, there’s an important restriction: Not everyone can buy Medigap Plan F anymore.

Who Is Eligible for Medigap Plan F?

A key rule affects whether you can get this plan:

• If you were first eligible for Medicare before January 1, 2020
  You may still be able to buy or keep Medigap Plan F, depending on availability in your state and your acceptance by the insurer.

• If you were first eligible for Medicare on or after January 1, 2020
  You cannot buy Medigap Plan F (or Plan C). These plans are closed to newly eligible Medicare beneficiaries.

“First eligible for Medicare” usually means when you turned 65 or qualified for Medicare through disability—not the date you actually enrolled.

⚠️ Important: If you already have Plan F, you are generally allowed to keep it as long as you continue to pay the premium and the plan remains offered.

What Does Medigap Plan F Cover?

Medigap plans are standardized in most states, meaning Plan F benefits are the same no matter which insurance company offers it (premium costs can differ, but coverage is consistent).

Here’s a breakdown of what standard Medigap Plan F typically covers:

Key Takeaway

With Plan F, nearly all Medicare-approved out-of-pocket costs for covered services are paid by the combination of Medicare and the Medigap plan. Many people who have Plan F experience very predictable costs, mainly limited to the monthly premium and any services Medicare does not cover at all (such as most dental, vision, or hearing services).

Understanding the Major Benefits of Plan F

Let’s look at a few of the benefits in more detail so you know what they actually mean in everyday use.

1. Coverage of the Medicare Part B Deductible

One of the main reasons Plan F is no longer available to newly eligible people is that it covers the Medicare Part B deductible.

• Part B covers things like doctor visits and outpatient services.
• The deductible is the amount you pay each year before Part B starts paying.

Plan F pays this deductible for you, which is part of what makes it a “first-dollar” coverage option.

2. Coverage of Medicare Part B Excess Charges

Some doctors who accept Medicare do not accept assignment, meaning they are allowed to charge up to a certain amount above the Medicare-approved cost (within legal limits). The extra amount is called an excess charge.

• Plan F covers 100% of these Part B excess charges, where they apply.
• This can be especially helpful if you see specialists who do not accept Medicare assignment.

3. Skilled Nursing Facility Coinsurance

If you need a stay in a skilled nursing facility (not just custodial care), Medicare may cover part of the cost for a limited time, with a daily coinsurance after a certain point.

Medigap Plan F helps pay that daily coinsurance, which can otherwise add up quickly.

4. Foreign Travel Emergency Coverage

Original Medicare generally provides very limited coverage outside the United States.

Plan F helps with emergency medical care during foreign travel up to certain lifetime limits and cost-sharing rules. It’s not full international health insurance, but it can offer some added protection for occasional travel.

Standard Plan F vs. High-Deductible Plan F

In many areas, there are two versions of Plan F:

1. Standard Plan F

   • Covers the listed benefits from the first dollar (after Medicare pays its share).
   • You pay a regular monthly premium, often higher than some other Medigap plans because of the broad coverage.

2. High-Deductible Plan F

   • Offers the same benefits as standard Plan F after you meet a high annual deductible.
   • Before you reach this deductible, you pay Medicare cost-sharing amounts yourself.
   • Typically has a lower monthly premium compared to standard Plan F.

Which version might make sense?

People often consider:

• Standard Plan F if they want maximum predictability and are comfortable paying a higher monthly premium for very low out-of-pocket costs at the point of service.
• High-Deductible Plan F if they prefer a lower monthly premium and are willing to take on more upfront costs each year before the plan’s coverage kicks in.

Eligibility rules (pre‑2020 Medicare eligibility) still apply to both versions.

How Medigap Plan F Works With Original Medicare

Medigap Plan F does not replace Medicare. Instead, it works alongside:

1. You stay enrolled in Medicare Part A and Part B.
2. Medicare pays its share of the approved amount for covered services.
3. Plan F then pays most or all remaining deductibles, copayments, and coinsurance according to its benefits.

You can generally see any provider nationwide that accepts Medicare, since Medigap plans do not usually have networks.

Note: Medigap plans do not include prescription drug coverage. For that, many people pair Medigap with a separate Part D plan.

What Medigap Plan F Does Not Cover

Even with its broad coverage, Plan F does not cover everything.

Common areas where you may still have costs include:

• Routine dental, vision, or hearing services (such as glasses, dentures, or hearing aids)
• Long-term custodial care (help with daily activities over an extended period)
• Most routine foot care
• Cosmetic surgery (unless medically necessary and covered by Medicare)
• Prescription drugs not covered under Part B (these are usually covered under a Part D plan)
• Services not approved by Medicare

If Medicare does not cover a service at all, Medigap Plans—including Plan F—typically do not pay for it either.

Plan F vs. Other Medigap Plans (Conceptually)

For those who are not eligible for Plan F or are considering alternatives, other Medigap options often come up.

A commonly discussed alternative is Medigap Plan G, which is available to most people newly eligible for Medicare. While this guide isn’t about Plan G in detail, the key conceptual difference often highlighted is:

• Plan F covers both the Part A and Part B deductibles.
• Plan G is similar in many ways but does not cover the Part B deductible.

Because of this, some people compare Plan F vs. Plan G by looking at:

• The difference in monthly premiums, and
• The cost of the Part B deductible they would have to pay with Plan G.

What’s best can vary based on individual financial preferences, local pricing, and eligibility.

Pros and Cons of Medigap Plan F

Here’s a practical summary of the potential advantages and drawbacks people often consider.

Potential Benefits

• Very comprehensive coverage for Medicare-approved costs
• Minimal out-of-pocket costs for covered services in many situations
• Predictable budgeting, since your main regular cost is the premium
• Freedom to see any doctor or specialist who accepts Medicare
• Helps cover Part B excess charges (where they apply)
• Includes limited foreign travel emergency coverage

Potential Drawbacks

• Not available to people first eligible for Medicare on or after Jan. 1, 2020
• Premiums can be higher than those of some other Medigap plans
• Does not include prescription drug coverage, dental, vision, or hearing
• Plan availability and premiums can vary by state, area, and insurer

When People Typically Consider Plan F

People who can still get Medigap Plan F often consider it when:

• They were eligible for Medicare before 2020 and want broad, predictable coverage.
• They prefer to avoid handling multiple copays and deductibles throughout the year.
• They expect to use medical services frequently and value low point-of-service costs.
• They want a supplement that may reduce worry about unexpected Medicare bills for covered services.

On the other hand, some people look at other Medigap plans when:

• They want a lower monthly premium, even if it means paying certain deductibles themselves.
• They are newly eligible for Medicare and cannot enroll in Plan F.
• They are comparing overall value among available Medigap options in their area.

How to Evaluate Whether Plan F Fits Your Needs

If you are eligible for Medigap Plan F and it’s available where you live, some practical steps to consider include:

1. Confirm your eligibility date

   • Determine when you were first eligible for Medicare (often your 65th birthday month or disability entitlement date).

2. Review your health care usage patterns

   • Consider how often you visit doctors, specialists, or the hospital.
   • Think about whether predictable costs are a priority.

3. Compare premiums and benefits with other Medigap plans

   • Look at the monthly premium versus what costs would be covered or left to you.
   • Remember Plan F’s major distinction: coverage of the Part B deductible and excess charges.

4. Factor in other coverage needs

   • Plan how you’ll handle prescription drugs (Part D), and possibly dental, vision, or hearing if important to you.

5. Check insurer options in your area

   • Medigap Plan F coverage is standardized, but premiums, underwriting rules, and available options may differ among insurance companies and states.

Because everyone’s situation is unique, people often find it helpful to speak with a licensed insurance professional or use official Medicare information sources for personalized guidance that stays within current rules and options.

Key Takeaways About Medigap Plan F

• Medigap Plan F is a Medicare Supplement plan known for very comprehensive coverage, including both the Part A and Part B deductibles, most coinsurance, and many other out-of-pocket costs.
• It generally provides first-dollar coverage for Medicare-approved services, leaving you with very little to pay beyond your monthly premium.
• New Medicare beneficiaries (first eligible on or after Jan. 1, 2020) cannot enroll in Plan F, but those eligible before that date may still be able to buy or keep it.
• There are two main versions: standard Plan F and high-deductible Plan F, which differ mostly in when coverage kicks in and how much you pay in premiums versus out-of-pocket costs.
• Plan F does not cover everything—services not covered by Medicare (like most routine dental, vision, and long-term care) still fall to you or other coverage.

Understanding what Medigap Plan F is—and how it fits into the larger Medicare picture—can help you make a more confident decision about whether it aligns with your coverage needs, budget, and eligibility.