Goodsurance
On this page· 7 sections
  1. What Medigap is
  2. What Medigap covers
  3. The plans most people actually choose
  4. Why the same plan costs different amounts
  5. When to buy, the window that matters
  6. Common questions
  7. References

Medicare · Coverage choices

Medigap (Medicare Supplement), explained

Last reviewed May 29, 20265 min readBy the Goodsurance editorial team Reviewed by the Goodsurance editorial team

Original Medicare pays about 80% of your covered medical costs and leaves the other 20% to you, with no annual cap on what that 20% can add up to. A Medigap policy fills those gaps. Here is how the plans work, which letters most people actually choose, and how the same plan can cost very different amounts depending on how the insurer prices it.

1What Medigap is

Medigap is private insurance you buy to pay your share of costs under Original Medicare, the copayments, coinsurance, and deductibles that Parts A and B leave behind. It works alongside Original Medicare; it does not replace it. To buy a policy you generally need both Part A and Part B.

The key thing that makes Medigap easy to shop: the plans are standardized. In most states there are ten plan types, named by letter (A, B, C, D, F, G, K, L, M, N). Every Plan G is the same Plan G no matter who sells it, the core benefits are set by law. What changes between companies is the price and the service, not the coverage.

2What Medigap covers

Every Medigap plan helps with a shared core of costs, then the higher letters add more on top. Nearly all plans cover:

  • Part A coinsurance and hospital costs, plus an extra 365 days after your Medicare benefits run out
  • Part B coinsurance or copayment
  • Part A hospice coinsurance or copayment
  • The first three pints of blood for a procedure

Depending on the letter, a plan may also cover the Part A deductible, skilled nursing facility coinsurance, Part B excess charges, and foreign-travel emergency care. The one cost no newer plan can cover for you is the annual Part B deductible ($283 in 2026).

365extra hospital days after Medicare runs out

3The plans most people actually choose

Of the ten letters, a handful account for the large majority of new purchases. Here are the five that matter most.

Plan G is the most common choice for people new to Medicare. It covers nearly everything Original Medicare doesn’t, the only gap you pay is the annual Part B deductible. After that, your covered costs are essentially zero. If you see doctors often or want the most predictable bills, this is the one to compare first.

Plan N trades a lower premium for a little cost-sharing: small copays at some office visits (up to $20) and the emergency room (up to $50), and it doesn’t cover Part B excess charges. Popular with healthy people who don’t mind paying a bit at the time of service.

Plan F is the most complete plan ever offered, it leaves you with virtually no out-of-pocket costs, but it is only available if you became eligible for Medicare before January 1, 2020. Newer enrollees can’t buy F or C. For those who qualify, it carries the highest premium.

High-deductible Plan G gives you the same coverage as regular Plan G but with a much lower premium in exchange for a high annual deductible. Good if you want comprehensive protection but prefer to pay less monthly and can absorb more upfront in a bad year.

Plan K pays a percentage (rather than all) of several costs in exchange for the lowest premiums, with an annual out-of-pocket limit after which it pays 100% for the rest of the year.

PlanCovers Part B deductibleExtra deductibleAvailability
Plan GNoneOpen to all
Plan NSmall office/ER copaysOpen to all
High-deductible G$2,950Open to all
Plan FNoneClosed since 2020
Plan KPartial cost-sharingOpen to all

No newer plan covers the Part B deductible. Source: CMS, 2026.

4Why the same plan costs different amounts

Because benefits are identical within a letter, price is where companies compete, and how they price matters as much as the starting number. There are three pricing methods:

  • Community-rated: everyone pays the same premium regardless of age. It won’t rise just because you get older.
  • Issue-age-rated: your premium is locked to your age when you buy. Buy younger, pay less, and it won’t climb with age.
  • Attained-age-rated: starts cheapest but rises as you age. The lowest quote today can become the most expensive over time.

This is the trap in shopping on the first-year price alone. Two Plan G policies with the same benefits can diverge by hundreds of dollars a year a decade later purely because of pricing method. Ask which method a quote uses before you compare.

Community-rated
  • Everyone pays the same, regardless of age
  • Will not rise just because you age
Issue-age-rated
  • Locked to your age when you buy
  • Buy younger, pay less long-term
Attained-age-rated
  • Cheapest today
  • Rises as you age, can end up highest

5When to buy, the window that matters

The best time to buy is your Medigap Open Enrollment Period: the six months that begin the month you’re 65 and enrolled in Part B. During this window an insurer must sell you any plan it offers at its best rate and cannot turn you down or charge more for health conditions, this is called guaranteed issue.

Miss it, and in most states the insurer can medically underwrite you: review your health, charge more, or decline you. That single window is the most valuable consumer protection in Medigap, which is why timing the purchase matters as much as choosing the letter.

Your 6-month Medigap Open Enrollment

Guaranteed issue · no health questions
Turn 65+2 mo+4 mo+6 mo
After the window, underwriting

In most states, once your 6-month window closes an insurer can review your health, charge more, or decline you. Buy during the window.

Common questions about Medicare

Quick answers to common questions

Tap any question to expand. Each question links to a fuller standalone answer.

Does Medicare cover durable medical equipment?

Yes.

Medicare Part B covers durable medical equipment (DME): reusable medical gear your doctor prescribes for use at home, such as wheelchairs, walkers, hospital beds, oxygen equipment, CPAP machines, and blood sugar monitors. You pay 20% of the Medicare-approved amount after the $283 Part B deductible in 2026, and Medicare pays the other 80%. To be covered, the item must be ordered by a Medicare-enrolled doctor and supplied by a Medicare-enrolled supplier, and some items are rented rather than bought. Equipment meant mainly for use outside the home, or only for comfort or convenience, is not covered.

Full answer →
Does Medicare cover mental health services?

Yes.

Medicare covers mental health care across its parts in 2026. Part B covers outpatient services like therapy, counseling, and visits with psychiatrists, psychologists, and clinical social workers, and since 2024 it also covers marriage and family therapists and mental health counselors. You pay 20% of the Medicare-approved amount after the $283 deductible, and one depression screening each year is free. Part A covers inpatient mental health care, with a lifetime limit of 190 days in a freestanding psychiatric hospital. Part D covers most mental health medications. Many of these services are also available by telehealth, and Medicare Advantage plans cover at least the same benefits.

Full answer →
Does Medicare cover vision care?

Mostly no for routine care.

In 2026, Original Medicare does not cover routine eye exams for glasses or contact lenses, and it does not pay for the glasses or contacts themselves. It does cover some medical eye care: yearly glaucoma screenings for people at high risk, diabetic retinopathy exams, treatment for eye diseases, and cataract surgery (including one pair of standard glasses or contacts afterward). For those covered services you pay 20% after the $283 Part B deductible. Many Medicare Advantage plans add a routine vision benefit covering eye exams and an allowance for glasses.

Full answer →
Does Medicare cover physical therapy?

Yes.

Medicare Part B covers outpatient physical therapy that is medically necessary to treat your condition. You pay 20% of the Medicare-approved amount after the yearly Part B deductible ($283 in 2026). There is no longer a hard dollar cap on therapy, but once your physical and speech therapy together pass $2,480 in 2026, your therapist must add a note (called a KX modifier) confirming you still need care. Claims above $3,000 may be reviewed for medical necessity. Part A covers physical therapy you receive as a hospital inpatient or in a skilled nursing facility. A doctor or therapist must set up and regularly review your plan of care.

Full answer →
Does Medicare cover chiropractic care?

Partly.

Medicare Part B covers one specific chiropractic service: manual manipulation of the spine to correct a subluxation (when one or more bones of the spine are out of position) that a doctor confirms is medically necessary. You pay 20% of the Medicare-approved amount after the $283 Part B deductible in 2026. Medicare does not cover other services a chiropractor might offer, such as X-rays, massage therapy, acupuncture, or routine wellness visits, so you would pay the full cost for those. Some Medicare Advantage plans include extra chiropractic or wellness benefits beyond this.

Full answer →
Does Medicare cover ambulance services?

Yes, in limited situations.

Medicare Part B covers emergency ambulance transportation when traveling any other way could endanger your health, taking you to the nearest appropriate hospital or facility. You pay 20% of the Medicare-approved amount after the $283 Part B deductible in 2026. Air ambulance is covered only when ground transport cannot reach you or would take too long. Non-emergency ambulance trips, for example to dialysis, are covered only when a doctor provides a written order stating they are medically necessary. Medicare does not cover ambulance rides taken purely for convenience.

Full answer →
Does Medicare cover skilled nursing facility care?

Yes, on a short-term basis.

Medicare Part A covers skilled nursing facility (SNF) care after a qualifying inpatient hospital stay of at least 3 days, when you need daily skilled care like nursing or therapy. In 2026 you pay $0 for days 1 through 20 of each benefit period, $217 per day for days 21 through 100, and all costs after day 100. Coverage is for skilled care while you recover, not for long-term or custodial care (help with daily activities like bathing or dressing), which Medicare does not cover. Long-term nursing home care is generally paid through Medicaid or private funds.

Full answer →
Does Medicare cover hearing aids?

No, not under Original Medicare.

In 2026, Original Medicare (Parts A and B) does not pay for hearing aids or the exams to fit them. Part B does cover diagnostic hearing and balance exams when your doctor orders them to help diagnose or treat a medical condition, and for those you pay 20% after the $283 deductible. Many Medicare Advantage plans, however, include a hearing benefit that helps pay for routine hearing exams and hearing aids, often through a specific network or allowance. If hearing coverage matters to you, it is worth comparing Advantage plans or a standalone hearing plan.

Full answer →
Does Medicare cover home health care?

Yes, when you qualify.

Medicare Parts A and B cover home health care if a doctor certifies that you are homebound (leaving home takes a major effort) and need part-time skilled care, such as skilled nursing, physical therapy, occupational therapy, or speech therapy. A Medicare-certified home health agency must provide the care under a plan your doctor reviews. You pay $0 for covered home health visits in 2026, and 20% for any durable medical equipment. Medicare does not cover 24-hour home care, meal delivery, or homemaker services like cleaning when that is the only care you need.

Full answer →
Does Medicare cover diabetes supplies and testing?

Yes.

In 2026 Medicare covers most diabetes care across two parts. Part B (outpatient care and equipment) covers blood sugar monitors, test strips, lancets, and continuous glucose monitors (CGMs) as durable medical equipment, plus diabetes screenings and a self-management training program. You pay 20% of the Medicare-approved amount after the $283 Part B deductible. Part D (drug coverage) covers insulin and related supplies like syringes, and in 2026 your insulin is capped at $35 for a month's supply. If you have a Medicare Advantage plan, it covers at least the same diabetes benefits, sometimes with added extras.

Full answer →
Which is better, Medigap or Medicare Advantage?

Neither is better for everyone; they suit different needs.

Medigap (also called Medicare Supplement, a private policy that pairs with Original Medicare) lets you see any doctor nationwide who accepts Medicare with no network and very predictable out-of-pocket costs, but you pay a monthly Medigap premium and add a separate Part D drug plan. Medicare Advantage (Part C, your Medicare benefits through a private plan) often has a lower or $0 plan premium, bundles drug coverage and extras like dental and vision, and caps your yearly out-of-pocket costs, but uses provider networks and may require prior approval. People who travel, want maximum doctor freedom, and prefer steady costs often lean Medigap; people who want low premiums, extras, and a network they are comfortable with often lean Medicare Advantage. With both, you still pay the Part B premium ($202.90 per month in 2026). To find out which fits your situation, reach out to a licensed Goodsurance advisor at 1-888-301-8091 (TTY 711), Mon to Fri 8 am to 5 pm PT.

Full answer →
Can I see out-of-network doctors on a Medicare Advantage PPO?

Yes.

A Medicare Advantage PPO (Preferred Provider Organization plan, where your Medicare benefits come through a private plan) lets you see doctors and hospitals outside the plan's network, but you usually pay more for out-of-network care than for in-network care. Staying in network keeps your costs lower, while going out of network is allowed and can be worth it if you want a specific provider. This flexibility is a key difference from a Medicare Advantage HMO (Health Maintenance Organization plan), which generally only covers in-network care except in emergencies. With a PPO, you also typically do not need a referral to see a specialist. Keep in mind the provider must accept the plan and Medicare. Emergency and urgent care are covered regardless of network on both plan types. The trade-off with a PPO is more freedom in exchange for generally higher costs than an HMO.

Full answer →

References

  1. Medicare.gov, How to compare Medigap policiesOfficial standardized-plan benefit chart. medicare.gov
  2. CMS, 2026 Medicare costsPart A/B deductibles and coinsurance. cms.gov
  3. NAIC, Choosing a Medigap PolicyFederal guide to plan letters and pricing methods.