Medigap Plans 2027

Reviewed by Russell Noga, a Licensed Medicare Insurance Broker in all 50 states — Updated October 8, 2026

There are 10 standardized Medigap plans, A, B, C, D, F, G, K, L, M and N, and each letter covers the same benefits no matter which insurer sells it. For people new to Medicare in 2027, Plans G and N and High-Deductible G are the most popular.

This guide walks through every letter so you can see what each one adds or leaves out, then shows how to narrow your choice and compare prices.

See the 2027 comparison chart.

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Key Highlights

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10 standardized plans, A through N.

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Same letter = same benefits from every insurer.

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C and F: pre-2020 eligibles only.

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HDG deductible: $3,050 for 2027.

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Every Medigap Plan, Letter by Letter

Plan What It Covers
Plan A The most basic plan: Part A coinsurance and hospital costs, Part B coinsurance, the first 3 pints of blood and hospice coinsurance. It does not cover the Part A deductible.
Plan B Everything in Plan A plus the Part A deductible.
Plan C Broad coverage including the Part B deductible; only for people eligible for Medicare before 2020.
Plan D Like Plan G but without coverage for Part B excess charges.
Plan F The most complete plan, including the Part B deductible and excess charges; only for people eligible before 2020. A high-deductible version has a $3,050 deductible in 2027.
Plan G Everything Plan F covers except the Part B deductible; the most complete plan open to new enrollees. High-Deductible Plan G has a $3,050 deductible in 2027.
Plan K Covers 50% of most cost sharing, with Medicare setting a yearly out-of-pocket limit.
Plan L Covers 75% of most cost sharing and has a lower annual out-of-pocket limit than Plan K.
Plan M Covers 50% of the Part A deductible and does not cover the Part B deductible or excess charges.
Plan N Covers Part B coinsurance except copays up to $20 for some office visits and up to $50 for ER visits that do not lead to admission; no excess charge coverage.

The Full Chart

Benefit A B C* D F* G K L M N
Hospital costs and Part A coinsurance for up to 365 additional days Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Part B coinsurance or copayment Yes Yes Yes Yes Yes Yes 50% 75% Yes Yes***
First 3 pints of blood Yes Yes Yes Yes Yes Yes 50% 75% Yes Yes
Part A hospice coinsurance or copayment Yes Yes Yes Yes Yes Yes 50% 75% Yes Yes
Skilled nursing facility coinsurance No No Yes Yes Yes Yes 50% 75% Yes Yes
Part A deductible No Yes Yes Yes Yes Yes 50% 75% 50% Yes
Part B deductible No No Yes No Yes No No No No No
Part B excess charges No No No No Yes Yes No No No No
Foreign travel emergency (up to plan limits) No No 80% 80% 80% 80% No No 80% 80%
Out-of-pocket limit None None None None None None Yes** Yes** None None

*Only people who became eligible for Medicare before January 1, 2020 can purchase Plans C and F. **Plans K and L carry an annual out-of-pocket limit set by Medicare each year; once you hit that limit, the plan covers 100% of covered services for the remainder of the year. ***Plan N covers all Part B coinsurance, except you may owe copays of up to $20 for certain office visits and up to $50 for ER visits that do not result in an inpatient admission. Plans in Massachusetts, Minnesota and Wisconsin are standardized in a different way.

Medigap Plans

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Narrowing Your Choice

Plan G

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After the Part B deductible, you pay little or nothing

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Covers Part B excess charges

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Highest premium of the three

Plan N

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You pay the Part B deductible plus small copays

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Does not cover Part B excess charges

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Usually a lower premium than Plan G

High-Deductible G

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In 2027, you pay up to $3,050 before coverage begins

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Then covers like Plan G

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Lowest premium

All 10 Medigap Plans Compared

Because federal law defines exactly what each plan letter covers, a given letter carries identical benefits from every insurer in your state.

Plan G, Plan N and High-Deductible Plan G

Most people new to Medicare choose one of these three. Plan G covers every gap except the Part B deductible. Plan N trades a lower premium for copays of up to $20 for some office visits and up to $50 for ER visits that do not lead to admission, and it does not cover Part B excess charges. High-Deductible Plan G has a $3,050 deductible for 2027, up from $2,950, then covers like Plan G. See Plan G vs Plan N.

Coverage DIfferences in Medigap Plans

How Medigap Prices Are Set

Your Age

Many insurers charge more as you get older.

Your ZIP Code

Prices vary by state and area.

Tobacco Use

Tobacco users usually pay more.

Discounts

Discounts for households or other groups, which vary by insurer and state.

Pricing Method How the Premium Is Set Over Time
Community-rated The premium is the same for everyone in an area, whatever their age Will not go up as you age, but may go up for inflation and other reasons
Issue-age-rated Based on your age when you buy Won’t increase as you age, though other factors can raise it
Attained-age-rated Based on your current age Rises as you age, on top of other increases

Insurer and state determine the method. Before buying, find out how a policy is priced, not only what it costs now.

When You Can Buy

Key Takeaway

Your six-month Medigap Open Enrollment Period begins in the first month you are both 65 or older and enrolled in Part B. During this window, insurers cannot turn you down or raise your price based on your health.

Watch for: unless you are in your six-month Medigap Open Enrollment Period or have a guaranteed issue right, most states allow insurers to ask health questions and then turn you down or charge you more.

You also have guaranteed issue rights under federal law in some situations, generally for 63 days after your other coverage ends:

You May Have a Right to Buy If

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Your Medicare Advantage plan exits your area or no longer serves Medicare

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You enrolled in Medicare Advantage when you first became eligible at 65 and want to go back within your first year

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You left a Medigap policy to try Medicare Advantage for the first time and want to go back within one year

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Employer or union coverage that pays after Medicare comes to an end

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Your Medigap insurer misleads you or goes bankrupt

Your state may offer extra protection: in New York and Connecticut, you can enroll in Medigap at any time of year with no health questions, while states like California and Oregon offer annual windows to move to an equal or lesser plan.

What Medigap Does Not Cover

Not Covered by Medigap

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Prescription drugs: add a standalone Part D plan

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Hearing aids, eye exams for glasses, and routine dental care

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Ongoing custodial care at home or in a nursing home

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Private-duty nursing

In 2027, standalone Part D plans can charge a deductible of up to $700, with out-of-pocket costs capped at $2,400. Get one along with Medigap so you avoid a lifelong late enrollment penalty.

Medigap vs Medicare Advantage

Medicare Advantage Original Medicare + Medigap
Monthly premium Often low or $0 (2027 average $12, CMS) Higher; varies by plan letter, age and ZIP
Doctors Usually a network Any provider in the U.S. that accepts Medicare
Costs when you get care Copays and coinsurance up to a yearly maximum Predictable and low; on Plan G, little to nothing after the Part B deductible
Drug coverage Usually included Add a separate Part D plan
Dental, vision, hearing Many plans may include some coverage Not included
Changing later Every year during Annual Enrollment In most states, health questions once your Medigap Open Enrollment Period ends

Plans K and L: Lower Premiums With a Cost Cap

Rather than paying all of most costs, Plans K and L pay a portion: after Plan K pays 50% or Plan L pays 75% of most cost sharing, the rest is yours. Their premiums are lower, and each has a yearly out-of-pocket limit set by Medicare every year. When you hit that limit, the plan covers 100% of covered services for the remainder of the year.

If you can absorb some costs along the way and want catastrophic protection for a lower premium, these plans may be a fit. Check whether your insurer sells Plan K or L in your state.

Plans C and F for Earlier Enrollees

Only Plans C and F cover the Part B deductible. As of January 1, 2020, these plans can no longer be sold to people who are newly eligible for Medicare. You may still be able to buy Plan C or F if you became eligible for Medicare before that date, even without enrolling, and that includes High-Deductible Plan F, whose deductible for 2027 is the same $3,050.

If you are eligible for both, weigh the yearly premium gap between Plan F and Plan G against the Part B deductible. When Plan F costs more than the deductible would save, Plan G is the stronger value.

Medigap Under 65

Insurers are not required by federal law to sell Medigap to people who get Medicare before 65 due to a disability or end-stage renal disease, though many states require it. People under 65 may face much higher prices and fewer plan options. At 65, you receive a fresh six-month Medigap Open Enrollment Period, during which you can buy any plan sold in your state for the same price as others your age.

Medigap When You Travel

Since a Medigap plan works with any provider that accepts Medicare, it goes wherever you go within the U.S. Abroad, Original Medicare generally pays nothing, but Plans C, D, F, G, M and N pay 80% of emergency care outside the U.S. once you meet a $250 annual deductible, up to a lifetime limit of $50,000.

Rate Increases and Switching Insurers Later

After you buy a Medigap policy, its benefits stay the same, though premiums may not. Insurers file rate increases with state regulators, frequently once a year. Since a given plan letter has the same benefits everywhere, moving to a cheaper insurer can cut costs while your coverage stays the same.

Underwriting is the drawback. Unless you are in your Medigap Open Enrollment Period or have a guaranteed issue situation, most states allow the new insurer to ask health questions and turn you down. Keep your current policy until the new one has been approved and is in force.

How Medigap Claims Work

Most of the time, you will never have to file a Medigap claim. Medicare is billed by your doctor and pays its portion, then the claim passes automatically to your Medigap insurer, which pays the rest of its share. A Medicare Summary Notice and an explanation of benefits show you what each one paid.

Medigap and Part D Together

Medigap plans sold today do not include prescription coverage, so you should pair yours with a Part D plan, which can come from any company, not just your Medigap insurer. Pick it in Medicare Plan Finder based on your drugs and pharmacy, and recheck it each fall. Putting off drug coverage with no other creditable coverage triggers a late penalty of 1% of the national base beneficiary premium ($41.33 for 2027) for each month without it.

What Original Medicare Leaves You to Pay

Medicare Supplement plans are designed to fill gaps left by Original Medicare. Here are the costs one can cover:

Original Medicare Gap What It Means for You Covered By
Part A deductible Charged per hospital benefit period rather than once a year. In 2026 it was $1,736. Fully covered by Plans B, C, D, F, G and N; partly by K, L and M
Part A hospital coinsurance Per-day charges starting after day 60 in the hospital, increasing after day 90 All 10 plans, plus 365 extra hospital days
Part B deductible An annual deductible paid before Part B pays. In 2026 it was $283. Only Plans C and F
Part B coinsurance Typically 20% of the approved amount, without an annual cap All plans (K and L in part, N with copays)
Part B excess charges Doctors who do not accept assignment can charge up to 15% over the approved amount Plans F and G
Skilled nursing coinsurance Charges per day from day 21 through day 100 of a covered stay Plans C, D, F, G, M and N (K and L in part)
Emergency care abroad Care received outside the U.S. is generally not covered by Original Medicare Plans C, D, F, G, M and N, up to plan limits

No limit unless you add a supplement: there is no out-of-pocket maximum in Original Medicare. If you lack a Medigap plan or other coverage, the 20% you may owe for Part B services has no ceiling.

Turning 65 in 2027

Turning 65 in 2027? Your Initial Enrollment Period runs for seven months: the three months leading up to your birthday month, the birthday month itself and the three months that follow. Enrolling in the first three months starts your coverage on the first day of your birthday month.

Turning 65 Checklist

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Enroll in Part A and Part B, unless you choose to delay Part B because you have qualifying employer coverage

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Choose between Original Medicare with Medigap and Medicare Advantage

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Avoid a Part D late penalty by enrolling in a drug plan or a Medicare Advantage plan with drug coverage

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Going with Medigap? Buy it during your six-month Medigap Open Enrollment Period

Help Paying Medicare Costs

Two programs can greatly lower Medicare costs for people with limited income and savings:

Medicare Savings Programs

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Run by your state Medicaid office

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May cover your Part B premium, and in some cases deductibles and coinsurance

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Income and asset limits vary by state

Extra Help (Part D)

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Run by Social Security

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Lowers Part D premiums, deductibles and copays

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Automatic eligibility for Medicare Savings Program members

If you qualify for both Medicare and full Medicaid, you may also be able to join a Dual Special Needs Plan. See help for low-income Part D beneficiaries.

Excess Charges and Medicare Assignment

When doctors “accept assignment,” they agree that Medicare’s approved amount is payment in full. Doctors who don’t accept assignment may bill up to 15% more, which is known as a Part B excess charge. Excess charges are covered by Plans F and G, but not by Plan N or most other plans.

Since most doctors accept assignment and some states restrict or ban excess charges, the risk is small for many people. Before you decide if paying for excess charge coverage makes sense, ask your doctors whether they take assignment.

Your Medigap Open Enrollment Period in Detail

The six-month Medigap Open Enrollment Period begins in the first month you are at least 65 and enrolled in Part B. It occurs just once and can never be restarted. Throughout this period, insurers have to sell you any Medigap plan they offer in your state for the same price healthy people pay.

When you work past 65 with employer coverage and put off Part B, your Medigap Open Enrollment Period does not begin until you sign up for Part B. Signing up for Part B early, before you need it, starts the clock and may waste this protection.

Switching From Medicare Advantage to Medigap

Step by Step

1

Find out if you have a guaranteed issue right. Two examples: your plan is being discontinued, or you are still in your first year of Medicare Advantage.

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If you don’t, look up your state’s rules. A few states add extra rights; most permit health questions.

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Get approved for Medigap before leaving Medicare Advantage. Apply first and wait for the approval.

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Join a Part D plan. Medigap does not cover drugs.

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Time your exit from Medicare Advantage correctly. Use Annual Enrollment or the window from January to March.

Medigap With Employer or Retiree Coverage

Coverage through a current employer may mean you do not need Medigap yet, and putting off Part B can save your Medigap Open Enrollment Period for later. Retiree coverage works differently: it can act like a supplement, so weigh it against Medigap before you drop it, since getting retiree coverage back may not be possible.

If employer or union coverage that pays after Medicare comes to an end, you generally gain a guaranteed issue right to purchase certain Medigap plans.

Medicare SELECT Policies

Medicare SELECT is a type of Medigap policy, sold by some insurers, that charges a lower premium but requires you to use specific hospitals, and sometimes doctors, for non-emergency care. The benefits are the same as the standard plan letter, yet the network requirement makes it behave more like a managed plan. A standard Medigap policy is the better choice if you want to see any doctor.

A Hospital Stay With and Without Medigap

Take a hospital stay as an example. With no supplement, you owe the Part A deductible each benefit period ($1,736 in 2026), plus 20% of the doctors’ Part B charges during your stay, without any cap. Plan G picks up the Part A deductible and your Part B coinsurance; once the annual Part B deductible is met, you generally owe nothing for Medicare-approved care.

Benefit periods matter: rather than once a year, the Part A deductible is charged per benefit period. Without Medigap, two separate hospital stays could mean paying the deductible twice.

Pre-Existing Condition Waiting Periods

When you buy Medigap in your open enrollment period or using a guaranteed issue right, an insurer generally cannot turn you down or raise your price because of health conditions. Still, without prior creditable coverage, you could face a waiting period of up to six months before a pre-existing condition is covered. Having creditable coverage beforehand shortens or eliminates that wait.

The 30-Day Free Look Period

When you swap one Medigap policy for another, you generally have 30 days to decide if the new policy is right for you. During that period, pay premiums on both, and keep your old policy until you are certain about the new one.

How to Read a Medigap Quote

Check Each Quote For

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Plan letter, so you compare like with like

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Monthly premium, plus any enrollment or first-year discount

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Pricing method: attained-age, issue-age or community

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Household or payment discounts applied

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Effective date and any application conditions

When a quote reflects an introductory discount, find out what the premium will be once the discount ends.

Common Medigap Mistakes

Avoid These

1

Letting your open enrollment period pass. After it ends, you may face health questions.

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Picking a plan only on its current price. Rate history and pricing method count too.

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Forgetting Part D. The late penalty is permanent.

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Leaving Medigap for Medicare Advantage with no way back planned. Returning later may mean answering health questions.

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Dropping a policy before the new one is approved. This could leave you with no coverage.

Medigap and Medicaid

People with full Medicaid generally do not need Medigap, and insurers generally cannot sell a policy that duplicates Medicaid benefits. A Medicare Savings Program, if you qualify, may cover your Part B premium and sometimes deductibles and coinsurance; consider whether a Medigap policy would still be worth it for you.

Getting Help

Help comparing plans is available, and it should not cost you anything. Your free options include:

Free Help Comparing Plans

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Medicare Plan Finder at Medicare.gov, open any time

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Call 1-800-MEDICARE (1-800-633-4227) any time, 24 hours a day and seven days a week

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Your State Health Insurance Assistance Program (SHIP), offering free and unbiased counseling

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A licensed agent or broker who compares plans from multiple insurers and charges you nothing

Gather your Medicare card, your drug list with doses, your doctors and the pharmacies you prefer before you call. Having them on hand keeps the conversation short.

Bottom Line

The Bottom Line

Learn what each Medigap letter covers, narrow to two or three, then compare prices for those letters. Most new enrollees choose Plan G, Plan N or High-Deductible G.

Compare plans and enroll online

Frequently Asked Questions

➤ How many Medigap plans are there?

There are 10 standardized Medigap plans: A, B, C, D, F, G, K, L, M and N. Each lettered plan offers the same core benefits no matter which insurer sells it, so only the price and service differ. Massachusetts, Minnesota and Wisconsin use their own standardized designs instead of these letters.

➤ Which is most popular?

Plan G is the most popular Medigap plan for people new to Medicare. It covers everything Plan F does except the Part B deductible, which leaves you with low, predictable costs. Plan N is another common choice for people willing to accept some copays in exchange for a lower premium.

➤ Can I buy Plan F?

You can buy Plan F only if you were first eligible for Medicare before January 1, 2020. If you became eligible on or after that date, Plan F is not available to you, and Plan G is usually the closest option. Plan C follows the same rule.

➤ What is the difference between Plan G and Plan N?

Plan G covers everything Plan F does except the Part B deductible. Plan N also skips the Part B deductible and excess charges, and you may pay up to $20 for some office visits and up to $50 for ER visits, waived if admitted. Plan N usually costs less.

➤ Do Medigap plans cover prescription drugs?

No, Medigap plans do not include Part D drug coverage. You need to buy a separate Part D plan for your prescriptions. Medigap also cannot be used with a Medicare Advantage plan, so it is paired with Original Medicare.

➤ When is the best time to buy a Medigap plan?

The best time is during your six-month Medigap Open Enrollment Period, which starts the month you are 65 or older and enrolled in Part B. During this window insurers cannot use medical underwriting. After it ends, insurers in most states can ask health questions.

➤ Do Medigap plans cover travel outside the U.S.?

Plans C, D, F, G, M and N cover 80% of foreign travel emergency care after a $250 deductible, up to a $50,000 lifetime limit. This only applies to emergencies. If you travel often, compare this benefit with separate travel insurance.

Have Questions?

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TTY users 711

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Find & Compare Plans Online

Speak with a licensed insurance agent

1-877-436-2343TTY 711

Mon-Fri: 8am-9pm ET