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High Deductible Plan G 2027

Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) | Last updated October 8, 2026

CMS set the 2027 High-Deductible Plan G deductible at $3,050, an increase from $2,950 in 2026. Each year you cover Medicare-covered costs up to that amount, and then the plan pays the same way regular Plan G does for the remainder of the year.

High-Deductible Plan G (HDG) provides the same benefits as standard Plan G, the most complete Medigap plan available to people new to Medicare. What differs is when coverage kicks in. Because you carry the deductible, HDG premiums are usually much lower than Plan G premiums, which may make it the cheapest route to full Medigap protection in a healthy year.

This guide explains how the 2027 deductible works, what counts toward it, how to compare HDG with regular Plan G, and who it fits. See High-Deductible Plan G and Medicare Supplement plans 2027.

✔ Licensed across all 50 states

✔ Built on CMS 2027 data

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Key Highlights

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For 2027, the High-Deductible Plan G deductible is $3,050, an increase from $2,950 (CMS).

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High-Deductible Plan F, available to people eligible for Medicare before 2020, uses the same deductible.

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Once it is met, HDG works like regular Plan G for the remainder of the year.

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Premiums for HDG are usually far lower than for regular Plan G.

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Medigap has no drug coverage, so you will need to add a Part D plan.

Compare plans and enroll online

How the 2027 Deductible Works

Step by Step

1

Medicare-covered costs come out of your pocket first. Deductibles, coinsurance and copays that Plan G would ordinarily cover count toward the $3,050.

2

Part B deductible payments count. Whatever you pay toward the Part B deductible counts toward the $3,050.

3

Coverage kicks in at $3,050. From that point until December 31, the plan pays the way standard Plan G does.

4

It starts over every January. Each calendar year, the deductible resets.

What is excluded: the deductible is not reduced by your monthly premiums or by what you pay for services Medicare does not cover. Your Part D drug costs are excluded as well.

How the Deductible Has Changed

Year HDG and HDF Deductible
2026 $2,950
2027 $3,050

Source: CMS. Each year the deductible is adjusted for inflation.

Each year CMS adjusts the deductible for inflation, so it generally goes up slightly every year. Plan for that when weighing HDG against regular Plan G across several years.

The Deductible Amount Explained

High-Deductible Plan G vs Regular Plan G

High-Deductible Plan G Regular Plan G
Benefits Same as Plan G after the deductible Covers every gap except the Part B deductible
What you pay before coverage Up to $3,050 in 2027 Only the Part B deductible
Monthly premium Usually much lower Higher
Worst-case yearly cost Premiums plus up to $3,050 Premiums plus the Part B deductible
Best for Healthy people with savings People who want the most predictable costs

A simple break-even test

Total one year of premiums for each plan. To find HDG’s worst case, add $3,050 to its total; to find regular Plan G’s worst case, add the Part B deductible to its total. When HDG’s worst case is near or under regular Plan G’s, HDG is the better deal for most people. When it is far higher, regular Plan G may justify its higher premium, particularly if you expect ongoing medical bills.

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Who High-Deductible Plan G Fits

HDG May Fit If

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You are generally healthy and rarely need care

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You can comfortably pay $3,050 in a bad year

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You want complete Plan G protection for the lowest premium

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You want catastrophic protection with any doctor

Regular Plan G May Fit If

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You see doctors or specialists regularly

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You want predictable monthly costs

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A $3,050 bill would strain your budget

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You have ongoing treatment

Switching Between HDG and Plan G

Switching from standard Plan G to HDG is usually simple because you’re picking less coverage. Going from HDG back to standard Plan G later may be tougher: outside your Medigap Open Enrollment Period or a guaranteed issue right, insurers in most states can ask health questions and turn you down.

State rules may work in your favor: Connecticut and New York let you enroll in Medigap at any time of year, and states like Oregon and California offer annual windows to move to coverage that is equal or lesser.

Comparing Medicare Supplement Options

What Original Medicare Leaves You to Pay

Original Medicare leaves gaps, and a Medicare Supplement plan is designed to fill them. It can pay these costs:

Original Medicare Gap What It Means for You Covered By
Part A deductible Applied each hospital benefit period instead of annually. The 2026 amount was $1,736. Plans B, C, D, F, G and N fully; K, L and M partially
Part A hospital coinsurance Daily charges after day 60 of a hospital stay, which climb after day 90 All 10 plans, plus 365 extra hospital days
Part B deductible An annual deductible owed before Part B pays. In 2026, $283. Only Plans C and F
Part B coinsurance Typically 20% of the approved amount, with no annual cap All plans (K and L in part, N with copays)
Part B excess charges As much as 15% over the approved amount from doctors who do not accept assignment Plans F and G
Skilled nursing coinsurance Daily charges for days 21 through 100 of a covered stay Plans C, D, F, G, M and N (K and L in part)
Emergency care abroad Care 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: Original Medicare does not have an out-of-pocket maximum. If you lack a Medigap plan or other coverage, the 20% you may owe on Part B services has no ceiling.

All 10 Medigap Plans Compared

What each plan letter covers is set precisely by federal law, so a given letter carries identical benefits from every insurer in your state.

Benefit A B C* D F* G K L M N
Part A coinsurance and hospital costs 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 buy Plans C and F. **Plans K and L come with a yearly out-of-pocket limit that Medicare updates each year; once you hit it, the plan covers 100% of covered services for the remainder of the year. ***Plan N covers all Part B coinsurance apart from copays of up to $20 for certain office visits and up to $50 for ER visits that do not result in an inpatient admission. Massachusetts, Minnesota and Wisconsin use their own way of standardizing plans.

When You Can Buy

Key Takeaway

Your Medigap Open Enrollment Period lasts six months and begins the first month you are both 65 or older and enrolled in Part B. During this period, an insurer cannot turn you down or charge you more based on your health.

Be aware: once your six-month Medigap Open Enrollment Period has passed, and without a guaranteed issue right, insurers in most states may ask health questions and turn you down or charge you more.

In certain situations, federal law also grants guaranteed issue rights, generally within 63 days of other coverage ending:

You May Have a Right to Buy If

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Your Medicare Advantage plan exits your area or stops serving Medicare

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

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Employer or union coverage that pays after Medicare stops

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Your Medigap insurer goes bankrupt or deceives you

Your state may give you extra rights: 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 an annual window to move to a plan that is equal or lesser.

Medigap and Part D

Drug coverage is not part of High-Deductible Plan G, and drug costs do not count toward its deductible. Pair it with a standalone Part D plan; in 2027, the Part D deductible can be no more than $700 and the out-of-pocket cap is $2,400.

$700

Maximum 2027 Part D deductible, up from $615.

$2,400

2027 Part D out-of-pocket cap, up from $2,100.

About $36

CMS average standalone Part D premium for 2027, an increase of under $1.

$7

Projected 2027 average for the drug portion of a Medicare Advantage premium, a decrease from $11.32.

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.

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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Before coverage begins, you pay up to $3,050 in 2027

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Then covers like Plan G

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Lowest premium

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

Household or other discounts, which vary by insurer and state.

Pricing Method How the Premium Is Set Over Time
Community-rated All people in an area pay one premium, whatever their age Does 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 Does not go up as you age, but may go up for other reasons
Attained-age-rated Based on your current age Rises as you age, on top of other increases

Which method applies depends on the insurer and the state. Before buying, find out how a policy is priced, not only what it costs now.

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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Routine dental care, hearing aids, and eye exams for glasses

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Long-term custodial care, whether in a nursing home or at home

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Private-duty nursing

In 2027, a standalone Part D plan can have a deductible of no more than $700 and an out-of-pocket cap of $2,400. Buy it with Medigap to avoid a late enrollment penalty that lasts for life.

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 Low and predictable; on Plan G, little or nothing once the Part B deductible is met
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 Health questions in most states 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: Plan K covers 50% and Plan L covers 75% of most cost sharing, leaving the remainder to you. In return for their lower premiums, both carry an annual out-of-pocket limit set by Medicare each year. After you hit that limit, the plan covers 100% of covered services for the remainder of the year.

These plans may fit people who want catastrophic protection for a lower premium and can manage some costs along the way. 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. Since January 1, 2020, they have not been sold to people newly eligible for Medicare. If you became eligible for Medicare before that date, even without enrolling, you may still be able to purchase Plan C or F, including a High-Deductible Plan F that has the same $3,050 deductible for 2027.

For most people eligible to buy either, set the yearly premium gap between Plan F and Plan G against the Part B deductible. If the extra cost of Plan F exceeds what it saves you on the deductible, Plan G is the better value.

Medigap Under 65

If disability or end-stage renal disease gives you Medicare before 65, federal law does not make insurers sell you a Medigap policy, though many states require it. Prices for those under 65 can run much higher, and plan options may be limited. At 65, you get a fresh six-month Medigap Open Enrollment Period, during which you can buy any plan sold in your state at the same prices others your age pay.

Medigap When You Travel

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

Rate Increases and Switching Insurers Later

Once you buy Medigap, its benefits never change, but its premiums can. Insurers submit rate increases to state regulators, frequently once a year. Since the same plan letter has the same benefits everywhere, moving to a cheaper insurer can cut costs while your coverage stays the same.

The drawback is underwriting. Outside your Medigap Open Enrollment Period or a guaranteed issue situation, most states allow the new insurer to ask health questions and turn you down. Do not cancel your current policy until the new one has been approved and is in force.

How Medigap Claims Work

Usually you won’t ever file a Medigap claim. Your doctor sends the bill to Medicare, Medicare pays its portion, and the claim passes automatically to your Medigap insurer, which then pays its portion. A Medicare Summary Notice and an explanation of benefits show you what each one paid.

Medigap and Part D Together

Medigap plans sold now don’t include prescription coverage, so you should add a Part D plan as well. It doesn’t need to come from your Medigap insurer. Pick it based on your drugs and pharmacy in Medicare Plan Finder and look it over each fall. If you put off drug coverage with no other creditable coverage, the late penalty adds 1% of the national base beneficiary premium, $41.33 for 2027, for each month you were without it.

Turning 65 in 2027

When you turn 65 in 2027, you get a seven-month Initial Enrollment Period: the three months before your birthday month, the birthday month itself and the three months that follow. If you sign up in the first three months, coverage begins on the first day of your birthday month.

Turning 65 Checklist

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Enroll in Part A and Part B, unless you have qualifying employer coverage and decide to postpone Part B

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Choose between Medicare Advantage and Original Medicare plus Medigap

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Enroll in a drug plan, or a Medicare Advantage plan that includes drugs, to avoid a late Part D penalty

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If you go with Medigap, purchase during your six-month Medigap Open Enrollment Period

Help Paying Medicare Costs

When your income and savings are limited, two programs can greatly lower your Medicare costs:

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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Those enrolled in a Medicare Savings Program qualify automatically

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 a doctor “accepts assignment,” they agree to accept Medicare’s approved amount as payment in full. Doctors who don’t accept assignment may charge as much as 15% more, known as a Part B excess charge. Excess charges are covered by Plans F and G; Plan N and most other plans do not cover them.

Because most doctors accept assignment and some states restrict or ban excess charges, the risk is small for many people. Before deciding whether to pay for excess charge coverage, ask your doctors if they accept assignment.

Your Medigap Open Enrollment Period in Detail

You get a six-month Medigap Open Enrollment Period beginning in the first month you are both 65 or older and enrolled in Part B. It occurs only once and can’t be restarted. During this period, insurers have to sell you any Medigap plan they offer in your state at the same price healthy people pay.

If you work past 65, keep employer coverage and postpone Part B, your Medigap Open Enrollment Period does not begin until you sign up for Part B. Signing up for Part B early when you do not need it starts the clock and can waste this protection.

Getting Help

You do not need to compare plans by yourself, and help should not cost you anything. Here are the free options:

Free Help Comparing Plans

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Available any time: Medicare Plan Finder on Medicare.gov

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1-800-MEDICARE (1-800-633-4227), reachable 24 hours a day on all seven days of the week

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Your State Health Insurance Assistance Program (SHIP), which provides free, unbiased counseling

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A licensed agent or insurance broker, who can compare plans across several insurers for free

Gather your Medicare card, a list of your drugs and doses, your doctors and your preferred pharmacies before you call. That way a long conversation becomes a quick one.

Bottom Line

The Bottom Line

For 2027, the High-Deductible Plan G deductible is $3,050. Once you meet it, HDG gives full Plan G protection at a far lower premium. Do the break-even test, confirm you could pay the deductible in a bad year, and buy in your Medigap Open Enrollment Period if possible.

Compare plans and enroll online

Frequently Asked Questions

➤ What is the High-Deductible Plan G deductible for 2027?

The High-Deductible Plan G deductible is $3,050 for 2027, up from $2,950 in 2026, according to CMS. The same amount applies to High-Deductible Plan F. Until you reach it, you pay Medicare-approved costs yourself, and afterward the plan pays like regular Plan G.

➤ Does the Part B deductible count toward the HDG deductible?

Yes. What you pay toward the Part B deductible counts toward the $3,050 High-Deductible Plan G deductible, along with the Part A deductible, coinsurance and other Medicare-approved costs you pay before the plan begins paying. Keep receipts so you can track your progress toward it.

➤ Do premiums count toward the deductible?

No. Your monthly premiums do not count toward the deductible, and neither do costs for services Medicare does not cover or your Part D drug costs. Only Medicare-approved costs you pay out of pocket count toward the $3,050 for 2027.

➤ What happens after I meet the deductible?

Once you meet the deductible, the plan pays like regular Plan G for the rest of the calendar year: Medicare-approved costs are covered, including Part B excess charges. The deductible then resets on January 1.

➤ Is High-Deductible Plan G worth it?

For many healthy people, yes. Compare a year of High-Deductible Plan G premiums plus the $3,050 deductible against a year of regular Plan G premiums plus the Part B deductible. If the premium savings are large and you rarely use care, HDG often comes out ahead.

➤ Does the HDG deductible go up every year?

Usually, yes. CMS adjusts the High-Deductible Plan G deductible each year for inflation, and it rose from $2,950 in 2026 to $3,050 in 2027. Plan for future increases when you compare HDG with regular Plan G.

➤ Can I switch from HDG to regular Plan G later?

You can apply, but outside your Medigap Open Enrollment Period or a guaranteed issue right, most states let insurers ask health questions and decline you or charge more. If your health might change, factor that risk in before choosing HDG.

Have Questions?

Speak with a licensed insurance agent

1-833-641-4938

TTY users 711

Mon-Fri: 8am-9pm ET

Find & Compare Plans Online

Speak with a licensed insurance agent

1-833-641-4938TTY 711

Mon-Fri: 8am-9pm ET

ZRN Health & Financial Services, LLC, a Texas limited liability company

( Medicare Expert )

Russell Noga is the CEO of ZRN Health & Financial Services, and head content editor of several Medicare insurance online publications. He has over 15 years of experience as a licensed Medicare insurance broker helping Medicare beneficiaries learn about Medicare, Medicare Advantage Plans, Medigap insurance, and Medicare Part D prescription drug plans.