Medicare Supplement

Medigap, Explained: What Those Letter Plans Really Cover

SPRINGDALE, Ark. — If you've ever tried to make sense of Medicare Supplement insurance, you've probably run into a wall of letters: Plan A, Plan G, Plan N, and more. That alphabet soup has a purpose. It's meant to make shopping easier, not harder — once you know how the pieces fit together.

Here's a plain-language look at what Medigap does, what it doesn't, and how the standardized letter plans work.

What Medigap Actually Does

Medicare Supplement insurance — often called Medigap — is a private policy that works alongside Original Medicare (Part A and Part B). It doesn't replace Medicare. Instead, it helps pay some of the out-of-pocket costs Original Medicare leaves behind, such as coinsurance, copays, and certain deductibles.

Think of it this way: Original Medicare pays its share of a covered service. Then your Medigap plan steps in to cover some or all of the remaining share, depending on which letter plan you have.

Medigap does not cover prescription drugs. For that, you'd need a separate Part D plan. It also doesn't cover things Medicare itself doesn't cover — like most dental, vision, hearing aids, or long-term custodial care.

How the Standardized Letters Work

In most states, including Arkansas, Medigap plans are standardized by the federal government. That means Plan G from one insurance company covers the same core benefits as Plan G from another company. The price can differ. The benefits cannot.

The plans currently sold to new enrollees are labeled with letters: A, B, D, G, K, L, M, and N. (Plans C and F are still available to people who became eligible for Medicare before January 1, 2020.) Each letter offers a different mix of benefits — some cover more, some cover less, and premiums generally reflect that.

Because the benefits are standardized, comparing plans really comes down to two questions: which letter fits your needs, and which company offers a fair price and good service for that letter in your area.

What Medigap Covers — the Common Building Blocks

While every letter is different, most Medigap plans help with things like:

• Part A hospital coinsurance and extra hospital days after Medicare benefits are used up
• Part B coinsurance or copays (the 20% you'd usually owe)
• The first three pints of blood in a medical setting
• Hospice care coinsurance or copays
• Skilled nursing facility coinsurance (on higher-tier plans)
• Part A deductible (on most plans)
• Emergency care during foreign travel (on some plans)

Plan G, for example, is popular because it covers nearly all the gaps except the annual Part B deductible. Plan N has lower premiums but leaves some office and emergency room copays to the enrollee. There's no single "right" letter — it depends on your health, budget, and how you use care.

Springdale and Washington County: A Note on Availability

Springdale is in Washington County, where residents on Original Medicare can shop for Medigap policies from insurance companies licensed to sell in Arkansas. Availability and pricing are regulated at the state level, and the same letter plans sold here match the federal standard.

Unlike Medicare Advantage, Medigap doesn't use provider networks. If a doctor or hospital accepts Original Medicare, your Medigap plan works with them — a big reason many people who travel or split time between states choose it.

The Mistake to Avoid: Missing Your Best Enrollment Window

This is where people get tripped up. The best time to buy a Medigap policy is during your Medigap Open Enrollment Period — the six months that start the month you're 65 and enrolled in Part B. During this window, insurance companies must sell you any Medigap policy they offer at their standard price, regardless of your health history.

Miss that window, and in most cases insurers can use medical underwriting. That means they can charge you more, or turn you down, based on health conditions. Arkansas does not have a broad "guaranteed issue" rule outside of federal protections, so timing matters a lot here.

A few other things worth knowing:

• You generally can't have both Medigap and a Medicare Advantage plan at the same time.
• Medigap policies are guaranteed renewable as long as you pay the premium.
• The Annual Enrollment Period (Oct. 15 – Dec. 7) applies to Medicare Advantage and Part D — not Medigap. Medigap has its own rules year-round.