Medicare Supplement Plan L is genuinely Plan K’s closer, pricier sibling — it shares 75% of most costs instead of 50%, with a meaningfully lower annual out-of-pocket limit to match that added protection.
How Plan L’s Cost-Sharing Works
- Medicare Part A coinsurance and hospital costs, plus up to 365 extra days — covered in full
- 75% of Medicare Part B coinsurance
- 75% of the cost of the first 3 pints of blood
- 75% of Part A hospice care coinsurance
- 75% of skilled nursing facility coinsurance
- 75% of the Medicare Part A deductible
Like Plan K, Plan L doesn’t cover the Part B deductible, Part B excess charges, or foreign travel emergencies. Once your out-of-pocket costs for covered cost-sharing reach Plan L’s annual limit — which is set lower than Plan K’s limit — the plan covers 100% of your share for the rest of the calendar year.
Choosing Between K and L
The honest, straightforward way to think about Plan L versus Plan K: Plan L costs more per month, but caps your worst-case year meaningfully lower and leaves you paying a genuinely smaller share of each individual medical bill along the way. If you’d genuinely rather smooth out the cost-sharing percentage (paying just 25% instead of 50% on each individual claim) in exchange for a somewhat higher monthly premium, Plan L fits well. If you’d rather keep the premium as low as possible and are comfortable with more cost-sharing per visit, Plan K fits better. Neither is “the better plan” in the abstract — it comes down to whether you value a lower monthly bill or a lower per-visit share more.
Comparing Plan L to Comprehensive Options
Plan L’s premium genuinely sits well below Plan G’s in most cases, but it asks you to actively share costs on every single claim rather than paying nothing (aside from the Part B deductible) the way Plan G does. For people who rarely use medical care beyond routine visits, that trade-off can work out favorably over several years. For people managing an ongoing condition with frequent claims, the 25% you’d pay under Plan L on every visit can add up faster than the premium difference would suggest — which is exactly the kind of comparison worth running with your actual usage rather than assuming based on the premium alone.
A Client Scenario
A client comparing Plan K and Plan L for the very first time naturally assumed the “cheaper” plan on paper (K) was automatically the smarter overall choice. When we laid out her prior year’s actual Part B claims side by side under both plans’ cost-sharing percentages, Plan L’s higher premium was almost entirely offset by what she’d have saved in reduced cost-sharing on her specific claims — meaning the two plans landed within a small margin of each other for her real usage, even though Plan K’s premium alone looked meaningfully lower. She chose Plan L for the added predictability once she saw the numbers were close. Someone with fewer claims in a typical year might have reached the opposite conclusion — which is the whole reason we run this comparison individually rather than defaulting to “K is always cheaper.”
Seeing the 75% Math in Practice
Using the exact same kind of example as Plan K but flipped around: if Original Medicare leaves you owing a $40 coinsurance amount after a routine office visit, Plan L covers 75% of that — $30 — leaving you responsible for $10, and that $10 counts toward your annual out-of-pocket limit. Compare that to Plan K, where you’d owe $20 on the same visit. That $10 difference multiplied across a year of visits is roughly what you’re paying the higher Plan L premium to avoid — whether that trade is worth it depends on how many visits you actually have in a typical year.
Guaranteed Issue Rights
Plan L is available without any medical underwriting during your 6-month Medigap Open Enrollment Period, which begins the month you’re 65 or older and enrolled in Part B, and in certain other guaranteed-issue situations such as losing employer group coverage. Outside those windows, carriers can generally ask health questions and price or decline applications accordingly, so timing matters if Plan L is the plan you want.
Common Questions About Plan L
Does Plan L cover foreign travel emergencies?
No — like Plan K, Plan L doesn’t include the foreign travel emergency benefit. If you travel internationally, you’d want a separate travel medical policy or a different plan letter that includes it, such as Plan G or Plan N.
Can I switch from Plan K to Plan L later?
Yes, though outside a guaranteed-issue window it would typically involve medical underwriting with your carrier, since it’s a new application rather than a plan adjustment. We can check whether your specific carrier offers any simplified internal switching option first.
Plan L and Medicare Advantage
Plan L, like every Medigap plan, is designed to work alongside Original Medicare only — it isn’t something you’d add on top of a Medicare Advantage plan, and no legitimate agent should suggest otherwise. If a Medicare Advantage plan’s structure (often a lower premium with copays instead of cost-sharing percentages, plus extra benefits like dental and vision) sounds closer to what you’re picturing, that’s a genuinely different conversation from choosing between Medigap letters, and one we’re glad to have separately.
Who Tends to Choose Plan L
In our genuine experience, Plan L tends to appeal to people who seriously considered Plan K, liked the lower premium concept, but ultimately wanted a smaller worst-case number and a meaningfully smaller share on each individual medical bill — often people who’ve had at least one unpredictable health year in the past and want more of a middle ground than Plan K offers, without paying for the full comprehensiveness of Plan G.
Plan L in a Broader Retirement Budget
Because Plan L’s annual out-of-pocket limit is a known, fixed number that resets every January 1st, we encourage clients considering it to treat that limit like a bill they’re quietly pre-funding over the course of the year rather than a worst-case number they’d rather not think about. Setting aside even a portion of that limit in a dedicated savings account tends to make Plan L’s cost-sharing structure feel far more manageable in practice than simply pocketing the premium difference between Plan L and a comprehensive plan like Plan G and hoping for a healthy year. We’re glad to walk through that budgeting piece with you directly, not just hand over a quote and leave the planning to chance.
How Premiums Are Priced
Like other standardized Medigap plans, Plan L premiums are set using community rating, issue-age rating, or attained-age rating, depending on the carrier. Attained-age policies often start lower but climb more steeply as you get older; issue-age and community-rated policies tend to start a bit higher but grow more predictably over time. Because Plan L is a lower-volume plan at most carriers compared to Plan G or Plan N, it’s worth specifically asking how that carrier’s Plan L book has trended on rate increases historically, rather than assuming its pricing behavior mirrors their more popular plans.
What Happens if You Move
Plan L is guaranteed renewable and works the same way nationwide, since Medigap fills gaps in Original Medicare rather than operating through a local provider network. If you relocate to another state, your existing Plan L policy continues working wherever Medicare is accepted, though premiums for the same plan letter can vary meaningfully by state and county — worth having us re-shop your coverage after a move, even though you’re never required to switch.
Plan L and Medicare Advantage Aren’t a Combination
It’s worth stating this plainly, since it comes up often in these conversations: Plan L, like every Medigap plan, only works alongside Original Medicare, not a Medicare Advantage plan. You wouldn’t hold a Plan L policy on top of Medicare Advantage coverage, and doing so wouldn’t provide any additional benefit even if you tried — the two simply aren’t designed to stack, and no legitimate agent should suggest otherwise. If you’re currently enrolled in a Medicare Advantage plan and Plan L caught your attention as a lower-cost alternative, moving to Original Medicare plus a Medigap plan is a genuinely bigger decision involving your current plan’s network, your prescriptions, and your specific doctors — worth its own dedicated conversation rather than folding it into a straightforward Plan K versus Plan L comparison.
Let’s Compare K and L for You
Because the genuinely right answer between Plan K and Plan L depends entirely on your actual usage and savings cushion, we’ll run both side by side using your real doctor visit history and current prescriptions, not a generic national estimate that doesn’t reflect your actual situation. If you’re in Bethel, Cincinnati, or anywhere throughout Hamilton, Clermont, Butler, or Warren County, we’re genuinely glad to go through it together with you, in person or by phone, whichever is more comfortable.