What Is Medigap Plan F? What You Need to Know

Medigap Plan F is a Medicare Supplement Insurance plan that’s offered by private companies. It covers "gaps" in Original Medicare coverage, such as copayments, coinsurance and deductibles.

Plan F offers the most coverage of any Medigap plan, but unless you were eligible for Medicare by Dec. 31, 2019, you can’t purchase Plan F. Even if you’re eligible, it can be significantly more expensive than its Medigap alternatives, so you may spend more than the additional coverage you’d get. If you’re not eligible to buy Plan F, you can purchase other Medigap plans with nearly as much coverage.

How it works

Medicare pays its share of the approved amount for covered health care costs and services. Then, the Medigap policy pays its share. (You’ll pay a separate monthly premium for Medigap benefits.)

Medigap plans are only for Original Medicare members, not for Medicare Advantage beneficiaries.

Here’s the catch for most new enrollees: If you’re newly eligible for Medicare after Jan. 1, 2020, you can't purchase a Medigap Plan F policy. After that date, new policies aren't allowed to pay for the Medicare Part B deductible, one of the features of Plan F (and of Medigap Plan C, which was also retired at the end of 2019).

If you were already covered by Plan F before Jan. 1, 2020, you can keep your plan. And if you were eligible for Medicare before that date but haven't yet enrolled, you may be able to buy a Plan F policy. But check the monthly premiums — you may be paying a lot more now for Plan F than you will for its alternative, Medigap Plan G plus the Part B deductible.

What Medigap Plan F covers

Here’s what Medigap Plan F covers, according to Medicare.gov:

• Part A coinsurance and hospital costs up to an additional 365 days after Medicare benefits are used up.

• Part A deductible.

• Part A hospice care coinsurance or copayment.

• Part B coinsurance or copayment.

• Part B deductible. (Since 2020, new Medicare members can’t buy any plan that covers the Part B deductible. However, this coverage is available for Medicare beneficiaries currently enrolled in Medigap Plan C and Plan F.)

• Part B excess charges (if a provider is permitted to charge more than Medicare’s approved amount and does so).

• Skilled nursing facility care coinsurance.

• Blood transfusion (first three pints).

• Emergency health care services for the first 60 days when traveling outside the U.S.

Plan F is also available as a high-deductible plan in some states, in which case coverage kicks in only after you meet a deductible of $2,490 for 2022.

» MORE: Are high-deductible Medigap plans worth it?

What Medigap Plan F doesn't cover

Medigap Plan F offers the most comprehensive coverage of any Medigap plan. There isn't a Medigap plan that covers more than Plan F, but you should know that Medigap plans don’t cover everything.

Medigap Plan F doesn’t cover the following, nor do any Medigap plans sold to new Medicare members:

• Prescription drugs.

• Long-term care (like non-skilled care you get in a nursing home).

• Dental care

• Vision care.

• Private-duty nursing.

Medigap Plan F alternatives

If you’re not eligible for Medigap Plan F but want a similar option, Plan G is the closest alternative. Medigap Plan G covers everything in Plan F except for the Medicare Part B deductible, since plans sold to new members can’t include that coverage.

You can compare the coverage of all of the Medigap plans to decide what plan would work best for you.

Medigap plans are standard in every state except Massachusetts, Minnesota and Wisconsin, which have their own policies. Plans are regulated by the government, but they’re sold by private insurers, and it’s the insurers who set the prices.

To find out what Medigap Plan G or any of the other plans would cost you, visit Medicare.gov.

You can get the best price and have the smoothest enrollment experience if you sign up for a Medigap plan during your Medigap open enrollment period.