Medigap Plan A is a Medicare Supplement Insurance plan that covers certain out-of-pocket expenses associated with Medicare Part A and Part B coverage.

Medigap Plan A includes only the basics for Medigap plans — the benefits that every Medigap plan covers. 

Most Medicare beneficiaries opt for higher-coverage options like Plan G or Plan N — only about 1% choose Plan A
[1]
. But if you don't want the added coverage, Plan A sometimes has lower premiums than other Medigap options.

Here's what you should know about Medicare Supplement Insurance Plan A.

» MORE: Best Medicare Supplement Insurance companies

What is Medicare Supplement Plan A?
Original Medicare beneficiaries can buy a Medigap plan to help pay for out-of-pocket costs like deductibles, copays and coinsurance. These plans aren’t available for Medicare Advantage members
[2]
.

There are 10 standardized Medigap plans available in most states (except Massachusetts, Minnesota and Wisconsin, which use different standards). The plans differ in terms of coverage for services, out-of-pocket limits and premium costs.

Medicare Supplement Plan A is the most basic of the standardized plans. It offers the benefits every Medicare Supplement Insurance plan has to cover, but nothing more.

What Medigap Plan A covers
Here’s what Medigap Plan A covers, according to Medicare.gov
[3]
:

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

Part A hospice care coinsurance or copayment.

Part B coinsurance or copayment.

Blood transfusion (first three pints).

What Medigap Plan A doesn’t cover
Here are the benefits Medigap Plan A doesn’t cover that are included in some other plans:

Part A deductible.

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.

Emergency care during travel outside the U.S.

Additionally, all Medigap plans, including Plan A, sold to new Medicare members don’t cover the following
[4]
:

Part B deductible (since 2020, new Medicare members can’t buy any plan that covers the Part B deductible, although existing members may own older plans that do).

Prescription drugs.

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

Dental care.

Vision care.

Private-duty nursing.

Looking for Unbiased Medicare Advice?
Chapter saves people over $1,000/year on their Medicare plans. You can reach them at (855)480-7438
Chapter (mobile image)
How much does Medigap Plan A cost?
Medicare Supplement Plan A is regulated by the federal government, but premiums are set by the private health insurance companies that sell the plan. 

Medigap Plan A premiums for a 65-year-old nonsmoker range from $97 to $313 per month in Atlanta, which has average costs among major U.S. metro areas for the most popular Medigap plan types
[5]
.

🤓
Nerdy Tip
Plan A isn’t always the cheapest, even though it has basic benefits. Read your quotes carefully when you’re shopping for plans. Sometimes, Medigap pricing can be unintuitive; for example, you might even see a high-coverage plan such as Plan G with prices below Plan A.

To find out what Medigap Plan A would cost for you, visit Medicare.gov.

» MORE: How much does a Medicare Supplement Insurance plan cost?

Buy Medigap Plan A during Medigap open enrollment
The easiest and least expensive time to enroll in a Medigap policy is during your Medigap open enrollment period.

This period happens only once. It starts once you’re 65 and enrolled in Medicare Part B, and lasts for six months. (If you're still working after 65 and covered by a group employer plan that is deemed creditable coverage, your six-month period starts after you’ve ended active employment or no longer have that insurance.)

Medigap policies are cheapest and easiest to get during this open enrollment period because insurance companies aren’t allowed to factor your health or medical history into your price. After the period ends, the prices may go up or you may be denied coverage due to your health status or medical history.

In some states, insurance companies sell Medigap plans to those under 65 who are living with a disability and are eligible for Medicare. You can find more information through your State Health Insurance Assistance Program, or SHIP.

If you have questions about Medicare, visit Medicare.gov or call 800-633-4227 (TTY: 877-486-2048).