A hospital stay can leave you responsible for costs that Original Medicare does not pay in full. That is why this Medigap coverage benefits guide 2026 focuses on the practical question behind most Medicare Supplement decisions: which gaps could affect your budget, and which plan benefits are worth paying for?
Medigap is private insurance that works alongside Original Medicare, which includes Part A and Part B. Medicare pays its approved share first. Your Medicare Supplement policy then helps pay certain remaining out-of-pocket costs, depending on the standardized plan you choose. It is not the same as Medicare Advantage, and it does not replace Original Medicare.
How Medigap Coverage Benefits Work in 2026
Original Medicare generally covers 80% of approved Part B services after you meet the annual Part B deductible. You remain responsible for the other 20%, with no annual out-of-pocket maximum under Original Medicare alone. Part A also has deductibles and daily coinsurance amounts that can apply during hospital or skilled nursing facility care.
A Medigap policy is designed to reduce those gaps. You must continue paying your Part B premium, plus the Medigap premium. When a provider accepts Medicare assignment, the claims process is often automatic: Medicare pays first, then the supplement pays its portion according to your policy benefits.
In most states, Medicare Supplement plans use the same lettered benefit structure. Plan G benefits from one carrier are the same as Plan G benefits from another carrier. The difference is usually the monthly premium, rate history, household discounts, customer service, and underwriting rules. Massachusetts, Minnesota, and Wisconsin standardize policies differently, so residents of those states should review their state-specific options.
The Core Benefits Most People Want Protected
The strongest reason to consider Medigap is not that it pays for every health expense. It does not. Its value is helping make major Medicare-approved medical costs more predictable.
Most standardized plans provide some level of help with Part A hospital coinsurance and extended hospital days. Many also pay all or part of the Part A deductible, skilled nursing facility coinsurance, Part B coinsurance or copayments, and the first three pints of blood. Higher-benefit plans can also cover the Part B excess charge, which may apply when a provider does not accept Medicare assignment and is legally permitted to bill above Medicare’s approved amount.
Several plans include a limited foreign travel emergency benefit. This can be useful for short trips outside the United States, but it is not comprehensive international medical insurance. Benefits typically come with a deductible, coverage limits, and eligibility conditions. If frequent international travel is part of your retirement plan, ask a licensed agent to explain the limits before relying on this feature.
What Medigap Does Not Usually Cover
Medigap policies sold today generally do not include outpatient prescription drug coverage. You may need a separate Medicare Part D plan if you want prescription drug coverage and want to avoid a late-enrollment penalty when you are eligible.
They also typically do not cover routine dental care, eye exams for glasses, hearing aids, long-term custodial care, or private-duty nursing. Some people add separate dental, vision, hearing, or cancer insurance based on their needs and budget. The right choice depends on what you use and what risks you want to insure, not simply on having the most policies.
Plan G and Plan N: The Comparison That Matters Most
For people who became eligible for Medicare on or after January 1, 2020, Plan G and Plan N are often the leading options. Plans C and F are generally unavailable to newly eligible beneficiaries because they cover the Part B deductible. If you were eligible for Medicare before 2020, you may still be able to keep or apply for those plans, subject to availability and underwriting.
Plan G is popular because it pays nearly all Medicare-approved out-of-pocket costs after you meet the annual Part B deductible. It also covers Part B excess charges. For someone who values predictable costs and wants broad protection for Medicare-approved services, Plan G can be a straightforward fit.
Plan N often has a lower premium than Plan G, but it asks you to share more of the cost. You pay the Part B deductible, may pay copayments of up to $20 for certain office visits and up to $50 for an emergency room visit that does not result in an inpatient admission, and are responsible for Part B excess charges. Plan N may make sense if you do not visit providers often, are comfortable with occasional copays, and can confirm that your doctors accept Medicare assignment.
The better value is not automatically the plan with the lowest premium. Compare the annual premium difference against the expenses you could face under each option. A licensed agent can help you review carriers offering the same standardized benefits and determine whether the savings on Plan N are meaningful for your situation.
Other Medigap Plans Can Fit Specific Needs
Plan K and Plan L cover a percentage of certain Medicare cost-sharing amounts and include annual out-of-pocket limits that change over time. They may appeal to consumers looking for lower premiums and who are willing to take on more cost sharing before reaching the plan’s limit.
Plan M covers part of the Part A deductible, while Plan D provides broad benefits but does not cover the Part B deductible or Part B excess charges. High-deductible versions of Plan G may also be available in many states. These policies can have substantially lower monthly premiums, but you must pay Medicare-covered out-of-pocket costs up to the plan deductible before the plan begins paying benefits.
Availability and pricing vary by carrier and location. A plan letter tells you the benefit design, but it does not tell you whether the price is competitive where you live.
Timing Can Protect Your Ability to Enroll
Your best opportunity to buy a Medigap policy is usually your six-month Medigap Open Enrollment Period. It begins the month you are both age 65 or older and enrolled in Medicare Part B. During this period, you generally have guaranteed-issue rights, meaning an insurer cannot deny you coverage or charge more because of preexisting health conditions.
After that window, you may still be able to apply, but insurers in many states can use medical underwriting. That means your health history may affect acceptance and pricing. Certain life events, such as losing qualifying coverage or moving out of a Medicare Advantage plan’s service area, can create special guaranteed-issue rights. Rules and available protections vary, especially for beneficiaries under 65 who qualify for Medicare because of a disability.
Unlike Medicare Advantage and Part D coverage, Medigap does not have an annual enrollment period that guarantees you can freely switch plans every fall. You can apply to change policies during the year, but approval may require underwriting. This is why choosing carefully when you first enroll can be financially valuable.
How to Compare Medigap Rates Without Missing the Fine Print
Start with the doctors and hospitals you use. Since Medigap works with Original Medicare, you can generally see any provider nationwide who accepts Medicare. However, a Medicare SELECT policy may require use of a network for non-emergency inpatient services in exchange for a lower premium.
Then compare the same plan letter across multiple carriers. Ask whether rates are community-rated, issue-age-rated, or attained-age-rated, because the pricing method can influence how premiums change over time. Also ask about household discounts, rate increase history, policy fees, and whether your preferred carrier offers the plan in your county.
Do not cancel an existing Medigap policy until you have been approved for a replacement policy and have reviewed the effective date and benefits. A short overlap in coverage is often safer than creating an uninsured gap.
A Medicare Supplement policy should make your healthcare costs easier to understand, not add another layer of uncertainty. Before enrolling, take the time to compare benefits, premiums, and your enrollment rights with a licensed Medicare agent who can review multiple carrier options. A clear answer now can help protect both your access to care and your retirement budget later.