Medigap Plans Explained: What Each Letter Actually Covers
Medigap plans can feel confusing at first glance, mostly because they are identified by letters rather than descriptive names. But once you understand what each letter actually covers, the whole system starts to make a lot more sense. If you are approaching 65 or already on Medicare and trying to figure out which Medigap plan fits your life and budget, this explainer is for you.
What Medigap Is and Why It Matters
Original Medicare (Parts A and B) covers a lot, but it does not cover everything. There are deductibles, copayments, and coinsurance amounts that you are responsible for out of pocket. A Medigap policy, also called a Medicare Supplement plan, is private insurance that sits alongside Original Medicare and helps pay some or all of those gaps. For people on fixed incomes in Belvidere, Rockford, Aurora, Joliet, Elgin, and surrounding areas throughout Illinois, having that extra layer of predictability can make a real difference in monthly budgeting.
Every Medigap plan sold in Illinois must follow federal and state rules, which means Plan G from one insurance company offers the same core benefits as Plan G from any other company. What varies is the premium. That is one of the most important things to understand going in.
The Letter Plans and What They Actually Cover
There are several standardized Medigap plans available, each named with a letter. Not every plan is right for every person, so here is a plain-language look at the most commonly chosen ones.
Plan A
Plan A is the most basic option. It covers Medicare Part A coinsurance and hospital costs, Part B coinsurance or copayments, the first three pints of blood, and Part A hospice care coinsurance. It is a starting point, but most people find that a more comprehensive plan gives them better long-term value.
Plan G
Plan G is currently one of the most popular options for people new to Medicare. It covers everything Plan A covers, 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 Plan G does not fill is the annual Part B deductible, which you pay once per year. For many of the clients we work with across Illinois, Plan G offers strong, predictable coverage at a competitive price.
Plan N
Plan N is a solid middle-ground option. It covers most of what Plan G covers, with a couple of differences: you may pay a copay of up to $20 for some office visits and up to $50 for emergency room visits that do not result in an inpatient admission. Plan N also does not cover Part B excess charges. If you are generally healthy and comfortable with a small amount of cost-sharing in exchange for a lower monthly premium, Plan N is worth a close look.
Plan K and Plan L
These two plans cover a percentage of costs rather than 100 percent, so they come with lower premiums but higher out-of-pocket exposure. They also include an annual out-of-pocket limit, which provides a ceiling on what you could spend in a given year. They tend to appeal to people who want some protection but are willing to absorb more day-to-day costs.
Plans C and F
Plans C and F were the most comprehensive options for years because they covered the Part B deductible. However, federal law closed these plans to people who became newly eligible for Medicare after January 1, 2020. If you were eligible before that date, you may still be able to enroll in one of these plans. It is worth asking about your specific situation.
Prescription Coverage Is Separate
One thing Medigap plans do not cover is prescription drugs. For that, you would look at a standalone Medicare Part D plan. At Medicare And Prescription Services, we help clients sort through both sides of the coverage picture so nothing falls through the cracks. We are transparent that we do not offer Part D plans directly, but we absolutely help guide you on how to approach that part of your coverage alongside your Medigap policy.
Timing and Enrollment Windows Matter
The best time to enroll in a Medigap plan is during your Medigap Open Enrollment Period, which begins the month you turn 65 and are enrolled in Medicare Part B. During this window, insurance companies cannot use medical underwriting to deny you coverage or charge you more based on health conditions. Outside of this window, your options can narrow. If you are turning 65 in the coming months, September is a great time to start these conversations so you are ready when your window opens.
How We Help You Sort Through the Options
Carl Ritz founded Medicare And Prescription Services with nearly 40 years of experience in insurance, and the approach here has always been personal. We sit down with you, go through your health situation, your budget, and your priorities, and we handle the paperwork on your behalf. We have helped clients in Belvidere, Rockford, Aurora, Joliet, Elgin, and surrounding communities find coverage that genuinely fits their lives, and some have seen real savings, including documented reductions of hundreds of dollars on Medicare supplement plans and prescription costs.
We also offer special attention and pricing for veterans turning 65 or applying for Medicare Part B, because that group often has unique considerations worth addressing carefully.
If you have questions about which Medigap plan makes the most sense for your situation, please give us a call or drop us an email. There is no pressure here, just straightforward answers from someone who has been helping Illinois families with Medicare for a long time.