High Deductible Plan G vs Plan G: Cost and Coverage

High Deductible Plan G and standard Plan G provide the same Medicare Supplement benefits after you meet the high-deductible amount. The main difference is when the policy starts paying: standard Plan G begins paying its covered share after you pay the Medicare Part B deductible, while High Deductible Plan G requires you to pay a larger annual deductible first. In 2026, the better fit usually comes down to whether lower monthly premiums are worth taking on more costs before coverage begins.

Both options work alongside Original Medicare, not Medicare Advantage. They can help pay Medicare-approved cost sharing, but neither includes routine prescription drug coverage, so you may also want to consider a separate Part D plan.

What both versions of Plan G cover

Medigap is private insurance designed to help with your share of Original Medicare costs. Medicare.gov explains that standardized Medigap policies must offer the same basic benefits for the same letter plan in most states, although premiums can differ by insurer and location.

After the applicable deductible is met, Plan G generally helps with Medicare Part A and Part B coinsurance, hospital costs after Medicare benefits are used, skilled nursing facility coinsurance, blood, hospice coinsurance or copayments, and Part A deductible costs. Plan G also covers Part B excess charges where they are allowed.

Plan G does not pay the Medicare Part B deductible. It also does not include prescription drug coverage, routine dental care, routine vision care, hearing aids, long-term custodial care, or care received outside the policy terms. If you are weighing other supplement designs, see this guide to medigap plan g vs plan n.

How the cost difference works in a real year

With standard Plan G, you pay the Part B deductible and then the supplement generally pays its covered share of remaining Medicare-approved cost sharing. With High Deductible Plan G, you continue paying eligible costs until you reach the annual high deductible. After that point, its covered benefits match standard Plan G benefits.

The lower premium for a high-deductible policy can be meaningful, but it is not automatic savings. Your result depends on the premium difference, how much care you use, whether services are Medicare-approved, and whether you reach the deductible. Ask each insurer for the premium for your age, ZIP code, tobacco status if applicable, and rating method. Premiums can also change over time. Learn why that can happen in Medicare supplement premiums by age increase.

According to the Centers for Medicare & Medicaid Services, the Medicare Part B deductible is $283 in 2026. That amount applies with either version of Plan G, because Plan G does not cover the Part B deductible.

Who should consider each option

High Deductible Plan G may suit you if

You are comfortable taking more financial responsibility before the policy pays, have an emergency fund, and want to compare lower premiums against a known annual deductible. It can also appeal to someone who wants nationwide access to providers that accept Medicare, without the network rules often associated with Medicare Advantage plans.

Standard Plan G may suit you if

You value predictability and would rather pay more each month than face a much larger early-year expense. It may be easier to budget for if you receive ongoing Medicare-covered care or if a higher deductible would make you postpone needed care.

Neither option is automatically better for every person. If your choice is really between Original Medicare with a supplement and a Medicare Advantage plan, review Medicare Advantage vs. Medigap for chronic conditions and the differences between a medicare advantage hmo vs ppo.

Enrollment timing can affect your choices

Your best time to buy a Medigap policy is generally your six-month Medigap Open Enrollment Period, which begins when you are both 65 or older and enrolled in Medicare Part B. Medicare.gov says insurers generally cannot use medical underwriting to deny you a Medigap policy or charge more because of health conditions during that window.

Outside that period, availability and pricing may depend on your state rules, health answers, and whether you have a guaranteed-issue right. If you are leaving a Medicare Advantage plan and want a supplement, read how to switch medicare advantage to medigap before ending coverage. Keep your current coverage until you understand your effective dates and any underwriting outcome.

Compare the full coverage setup, not just one premium

A Medigap policy works only with Original Medicare, and you may need a separate Part D plan for prescriptions. Look at the total of your Part B premium, Medigap premium, Part D premium, expected prescriptions, and likely out-of-pocket medical costs. That gives you a clearer picture than comparing a single monthly premium.

Plan availability, premiums, and state rules vary. You can use the official Medicare.gov Medigap search tools to see policies in your area, then use our guide to compare senior plan options as you organize the tradeoffs.