Medicare Supplement

Plan G vs. N vs. High-Deductible G: What the Medigap Letters Mean in Weymouth

WEYMOUTH, Mass. — If you've started shopping for a Medicare Supplement policy, you've probably run into a wall of letters: Plan G, Plan N, high-deductible G, Plan K, Plan L. It can feel like alphabet soup. Here's the good news for Weymouth readers: those letters are set by the federal government, and the coverage inside each letter is the same no matter which insurance company sells it.

That doesn't mean every choice is easy — but once you understand what each letter covers, comparing policies gets a lot simpler.

Why the letters exist

Medigap — also called Medicare Supplement Insurance — helps pay some of the out-of-pocket costs that Original Medicare (Parts A and B) leaves behind, like coinsurance and hospital deductibles. To keep shoppers from being confused by dozens of different products, the federal government created standardized plans identified by letters. Each letter has a fixed benefit chart.

So if you're comparing a Plan G from Company A and a Plan G from Company B in Weymouth, the covered benefits are identical. The differences between insurers come down to price, customer service, and how they handle billing — not what's covered.

One important local note: Massachusetts is one of three states (along with Minnesota and Wisconsin) that standardizes Medigap plans differently from the rest of the country. In Massachusetts, the plans go by names like "Core" and "Supplement 1." If you're moving to Weymouth from elsewhere — or moving away — the letter names may shift, so it's worth confirming with medicare.gov or a licensed agent.

Plan G, in plain language

Plan G is one of the more comprehensive standardized plans available to people newly eligible for Medicare today. In the federal chart, it covers Part A hospital coinsurance and hospital costs after Original Medicare's benefits end, Part B coinsurance or copayments, the first three pints of blood each year, hospice coinsurance, skilled nursing facility coinsurance, and the Part A deductible. It also covers 80% of certain foreign travel emergency care up to plan limits.

What Plan G does not cover: the annual Part B deductible. You pay that yourself before Plan G's Part B benefits kick in.

Plan N, in plain language

Plan N covers most of the same categories as Plan G, with two differences worth knowing. First, Plan N does not cover Part B "excess charges" — the extra amount some providers can bill when they don't accept Medicare's approved amount as full payment. Second, Plan N asks the enrollee to pay small copays for certain office visits and emergency room trips (the ER copay is waived if you're admitted).

Like Plan G, Plan N does not cover the Part B deductible.

High-deductible Plan G

High-deductible Plan G covers the same benefits as regular Plan G — but only after you've paid an annual deductible set by federal rules. Until you hit that deductible, you're responsible for the costs Plan G would normally cover. It's a version of the plan aimed at people who want the same underlying coverage with a different up-front structure.

Plans K and L: cost-sharing plans

Plans K and L work differently from Plans G and N. Instead of paying most Medicare gaps in full, they pay a percentage of certain costs — Plan K pays 50% of many Part B and hospice coinsurance amounts, and Plan L pays 75%. You pay the rest.

The trade-off is a built-in yearly out-of-pocket limit. Once you hit that limit (set each year by federal rules), the plan pays 100% of covered Medicare Part A and B copayments and coinsurance for the rest of the calendar year. Plans K and L also do not cover the Part B deductible.

A note on Plans C and F

You may see Plans C and F mentioned online or in older brochures. Under federal law, these plans are closed to people who became eligible for Medicare on or after January 1, 2020, because they covered the Part B deductible. If you were eligible before that date, you may still be able to buy them; if you weren't, they aren't an option.

How to decide what fits

Since the letter defines the coverage, the question isn't really "which letter is best" — it's "which trade-offs make sense for me." Some people prefer paying more predictable premiums with fewer surprise bills. Others are comfortable with copays or a deductible in exchange for a different cost structure. Your health, budget, travel habits, and whether your providers accept Medicare assignment can all factor in.

Weymouth is in Norfolk County, and residents have access to the same federally standardized Medigap framework as the rest of Massachusetts (using the state's plan names). For personalized guidance, Massachusetts residents can contact SHINE, the state's SHIP program, which offers free, unbiased Medicare counseling.