Medigap Plans in Ohio for 2027: the 10 Letters and the 6-Month Window

What does a Medigap plan in Ohio actually pay for?

A Medicare Supplement policy sits behind Original Medicare and picks up part of what you would otherwise owe. The Ohio Department of Insurance describes MedSup policies as coverage sold by private companies that can help pay costs Original Medicare does not, such as copayments, coinsurance and deductibles, and notes they are also called Medigap policies.

The payment order is simple. Medicare pays its share of the Medicare-approved amount, your MedSup policy then pays its share, and the policy premium is in addition to what you pay for Part A and Part B. If you are still deciding between coverage routes, start with our Medicare hub and then narrow to a plan letter.

Which of the 10 standardized Medigap letters can Ohioans buy for 2027?

Medicare lists 10 types of Medigap plans in most states, named A through D, F, G, and K through N, and says price is the only difference between same-letter policies sold by different companies. Massachusetts, Minnesota and Wisconsin standardize Medigap differently. Ohio does not, so an Ohio Plan G matches a Plan G written anywhere else on that list.

Two letters carry an eligibility test. Medicare says not everyone can buy Plan C and Plan F, and eligibility depends on when you first became eligible for Medicare. If you aged in recently, the practical shortlist is usually G, N, or a high-deductible version, which we break down in our guide to the 10 Medigap letters and how Plan G compares to Plan N.

Ohio also allows a network variation. ODI notes you may be able to buy a type of MedSup policy called Medicare SELECT, which requires you to use specific hospitals and, in some cases, specific doctors to get full coverage.

When can you buy an Ohio Medigap policy without health questions?

One window matters more than the rest. ODI states that regardless of health, an open enrollment opportunity is provided during the first six months a person is both age 65 and enrolled in Medicare Part B, and in certain situations when previous coverage is lost, with enrollment rights generally ending 63 days after coverage loss.

Medicare stresses that the Medigap Open Enrollment Period is a one-time enrollment and does not repeat every year like the Medicare Open Enrollment Period. That is the single most expensive misunderstanding we see in Ohio. People assume the October 15 to December 7 window reopens Medigap, and it does not.

When a guaranteed-issue right does apply, it is strong. ODI reminds Ohioans and carriers that a person qualifying for a guaranteed-issue opportunity may enroll without underwriting, the company cannot refuse to sell the policy, and it cannot charge more because of health status, claims experience or medical condition. Guaranteed-issue and underwriting rules vary by state, so an Ohio answer is not a national answer. Our post on the 63-day rule for moving from Medicare Advantage to Medigap walks through how those dates are counted.

If you are under 65 and on Medicare through disability or ESRD, availability is a separate question. Federal law does not require carriers to sell Medigap to people under 65. [VERIFY: current Ohio Revised Code 3923.33 status and any under-65 Medigap availability listed by the Ohio Department of Insurance for 2027]

What decides your Ohio Medicare supplement rate?

Benefits are fixed by letter, so price is the variable. ODI advises that different companies may charge different premiums for the same policy, and that you should compare the same policy across companies, such as one company’s Plan A premium against another’s Plan A premium.

Beyond the carrier, Ohio quotes move with your age, ZIP code, tobacco use, household discounts and the rating method the company uses. Community-rated policies charge the same regardless of age, issue-age policies lock to your age at purchase, and attained-age policies rise as you get older. Ask which method applies before you sign, because two identical Plan G policies can age very differently.

We do not publish Medigap rates, because a rate is only real once it is quoted for your ZIP, age and health answers. State rules differ, too, which you can see by comparing this page with our write-up on the 6-month window and 63-day rights in Texas.

How do Plan G, Plan N, and high-deductible Plan G compare for 2027?

The table below uses confirmed 2026 cost-sharing figures. CMS updates the high-deductible amount each year after the August Consumer Price Index figures are released, which generally happens in mid-September, and the 2027 Part A and Part B amounts arrive in the annual fall announcement. Treat the 2026 column as your planning baseline until those land.

Medicare lists the 2026 Part B deductible at $283. For Plan N, Medicare says the plan pays 100 percent of Part B coinsurance, but you pay a copayment of up to $20 for some office visits and up to $50 for emergency room visits when you are not admitted as an inpatient. CMS set the high-deductible Plan F, G and J amount at $2,950 effective January 1, 2026, and high-deductible Plan G is available to individuals new to Medicare on or after January 1, 2020.

Two letters work differently again. Medicare puts the 2026 out-of-pocket limit at $8,000 for Plan K and $4,000 for Plan L. No Medigap letter covers prescriptions, so most Ohio buyers pair a supplement with a stand-alone drug plan from our Part D hub.

Is Medigap or Medicare Advantage the better fit in Ohio?

Ohio is a heavy Medicare Advantage market. KFF reports that more than half, 55 percent, of eligible Medicare beneficiaries nationally were enrolled in Medicare Advantage in 2026, and KFF also found the counties with the most plan options are predominantly in Pennsylvania and Ohio. Plenty of choice is not the same as the right choice.

The trade is predictability against monthly cost. A supplement adds a premium but removes most per-visit math and keeps you with any provider that accepts Medicare. An Advantage plan usually costs less monthly and bundles drug coverage, with networks, referrals and prior authorization in exchange. We lay out both sides in the honest Medicare Advantage versus Medigap comparison for 2027, including the underwriting trap on the way back.

How do you set up Ohio Medigap coverage for 2027?

Work the calendar first, then the carrier list. The Ohio Department of Insurance lists Medicare Open Enrollment as October 15 to December 7, which is the window for drug and Advantage changes, while your Medigap timing runs on the 6-month and 63-day rules above.

ODI notes that Ohioans on Medicare can contact the Ohio Senior Health Insurance Information Program at 800-686-1578 and oshiipmail@insurance.ohio.gov. Ohio requires a free-look period on new Medicare Supplement policies. [VERIFY: free-look length for Medicare Supplement policies under Ohio law]