Medicare Supplement Plans in NC: Medigap Explained
Learn how Medigap plans work in North Carolina, what each lettered plan covers, how much they cost, and how to choose the right Medicare supplement for your needs.
Learn how Medigap plans work in North Carolina, what each lettered plan covers, how much they cost, and how to choose the right Medicare supplement for your needs.
Medigap (Medicare Supplement) plans are sold by private insurance companies in North Carolina to cover costs that Original Medicare leaves behind, such as copays, coinsurance, and deductibles.
North Carolina residents can choose from up to 10 standardized Medigap plan letters (A, B, D, G, K, L, M, N, and for those eligible before January 1, 2020, C and F).
Plan G is currently the most comprehensive Medigap option available to new Medicare enrollees in NC.
Premiums vary by insurer, your age, and where you live in North Carolina — comparing multiple carriers is essential.
If cost is a barrier, programs like Medicaid, Medicare Savings Programs, and Extra Help may provide relief when you can't afford a supplement plan.
A Medicare Supplement plan — also called Medigap — is private health insurance designed to work alongside Original Medicare (Parts A and B) in North Carolina. It pays for costs that Medicare doesn't fully cover, including hospital coinsurance, copayments, and sometimes deductibles.
Medigap plans are sold by licensed insurance companies operating in NC, including well-known carriers such as Blue Cross NC, State Farm, and others. Every plan with the same letter must offer identical benefits regardless of which insurance company sells it — the only difference is the premium.
You must already be enrolled in Medicare Part A and Part B to buy a Medigap plan. Medigap does not cover prescription drugs; for that, you need a separate Medicare Part D plan.
North Carolina follows federal standardization rules, meaning insurers must offer the same core benefits for each plan letter. Most new enrollees today can choose from plans A, B, D, G, K, L, M, and N.
Plans C and F — which cover the Medicare Part B deductible — are no longer available to people who became eligible for Medicare on or after January 1, 2020. If you were eligible before that date, you may still be able to purchase or keep C or F.
Here is a plain-language breakdown of the major plans:
Plan A covers the basics: Medicare Part A hospital coinsurance and an additional 365 days of hospital costs after Medicare benefits are used, Part B coinsurance or copayments, the first three pints of blood, and Part A hospice care coinsurance. It is the minimum a Medigap insurer must offer.
Plan G is the most comprehensive plan available to new Medicare enrollees as of 2026. It covers everything Plan A does, plus the Part A deductible, skilled nursing facility coinsurance, Part B excess charges, and foreign travel emergency care (up to plan limits). The only gap is the annual Medicare Part B deductible, which you pay once per year.
Plan N offers strong coverage at a lower premium than Plan G. It covers most of the same benefits but requires small copayments for some office visits and emergency room visits. It does not cover Part B excess charges, so it works best if your doctors accept Medicare assignment.
These plans use a cost-sharing structure — they pay a percentage of certain benefits rather than 100%. They have lower premiums and an out-of-pocket limit, making them an option for people comfortable with some cost sharing in exchange for a lower monthly cost.
Plan D covers a solid range of benefits but not Part B excess charges. Plan M covers only 50% of the Part A deductible. Both are less common but worth comparing if they are available from carriers in your area of North Carolina.
When you use a health care service, Medicare pays its share first. Then your Medigap plan pays its share based on your plan letter's benefits. In many cases — especially with Plan G — you have little to no remaining bill.
You can see any doctor or specialist in the country who accepts Medicare, with no network restrictions. This is a major advantage of Medigap over Medicare Advantage plans, which typically use provider networks.
Premiums vary depending on the plan letter, the insurance company, your age at enrollment, tobacco use, and where in North Carolina you live — whether you're in Mecklenburg County around Charlotte, Wake County in the Raleigh-Durham area, Guilford County in Greensboro, or any other county across the state. There is no single published rate that applies to everyone.
The best way to find accurate pricing is to compare quotes from multiple carriers side by side. Because benefits are standardized by letter, a lower premium for the same plan letter is simply a better deal — as long as the insurer is financially stable and licensed in NC.
Insurers can price Medigap plans using three methods: community rating (same price for all ages), issue-age rating (based on your age when you buy), or attained-age rating (price rises as you age). Knowing which method a carrier uses matters for long-term affordability.
The best time is during your Medigap Open Enrollment Period, which begins the month you turn 65 and are enrolled in Medicare Part B. During this six-month window, insurance companies in North Carolina cannot deny you coverage or charge higher premiums because of pre-existing health conditions.
Outside of this window, insurers can use medical underwriting, which means they can charge more or deny coverage based on your health history. A few exceptions — called guaranteed issue rights — apply in specific situations, such as losing employer coverage.
Enrolling at the right time protects your access to coverage and keeps your premiums lower.
Guaranteed issue means an insurance company must sell you a Medigap plan without medical underwriting — they cannot turn you away or charge you more because of health conditions. In North Carolina, guaranteed issue rights apply in specific circumstances defined by federal law.
These situations include: your Medicare Advantage plan is leaving the area or stops covering your area, you are in your initial Medigap Open Enrollment Period, or you lose employer-sponsored health coverage that was supplementing Medicare. When any of these apply, insurers must offer you at least Plans A, B, and L (and in some cases Plan C, D, F, G, or N depending on the triggering event).
If you believe you qualify for a guaranteed issue right, act quickly—these windows are typically limited to 63 days from the triggering event.
SilverSneakers is a fitness benefit — access to gyms and wellness classes — that is sometimes included with Medicare Advantage plans or added by certain insurers as a rider. It is not a standard Medigap benefit required by federal law, so no plan letter automatically includes it.
Some insurance companies that sell Medigap in North Carolina may choose to add SilverSneakers or a similar fitness benefit as an extra perk. The availability depends entirely on the specific carrier and the plan they offer. When comparing plans, ask each insurer directly whether their Medigap policies include any wellness or fitness benefits.
If the monthly premium for a Medigap plan is out of reach, several programs may help North Carolina residents manage Medicare costs. The most important options are Medicare Savings Programs (MSPs) and the Extra Help program for Part D drug costs.
Medicare Savings Programs are administered through NC Medicaid and can help pay your Part B premium, deductibles, and copayments if your income and assets fall within eligibility limits. There are four levels of MSPs (QMB, SLMB, QI, and QDWI), each covering different cost types. You can apply through your county Department of Social Services or through NC Medicaid.
Medicaid may cover many of your health care costs alongside Medicare if you qualify based on income and other factors in North Carolina. Income and asset thresholds vary by program, so it's worth checking your eligibility.
Extra Help (Low Income Subsidy) reduces costs for Medicare Part D prescription drug coverage, freeing up budget for other health expenses.
If none of these programs apply, comparing lower-cost Medigap options like Plan K, Plan L, or Plan N — which have lower premiums in exchange for some cost sharing — may make supplement coverage more affordable than Plan G.
The NC Department of Insurance and NC SHIIP (Seniors' Health Insurance Information Program) offer free, unbiased counseling to help you understand your options. Reaching out to a licensed insurance agent in North Carolina can also help you compare plans side by side without added cost.
Start by thinking about how often you use health care. If you see specialists frequently, visit the emergency room, or have ongoing conditions, a comprehensive plan like G may save you more money overall despite its higher premium. If you are generally healthy and want lower monthly costs, Plan N or Plan K could be a better fit.
Next, compare carriers. Because benefits are identical by letter, the insurer's financial stability, customer service reputation, and pricing method matter. Look at whether they use attained-age pricing, which can make premiums increase significantly as you age.
Finally, consider whether you travel frequently outside of North Carolina. Plans G, D, and N include foreign travel emergency coverage, which can matter if you spend time abroad.
A licensed agent who specializes in Medicare in North Carolina can pull quotes from multiple insurance companies at once, helping you find the right balance of coverage and cost.
This article is for general information and is not insurance or medical advice. Consult a licensed agent.