What Medicare Doesn't Cover — and How to Fill the Gaps
Turning 65 doesn't mean everything is covered. Original Medicare (Parts A and B) handles a lot, but it leaves gaps that can get expensive — no cap on out-of-pocket costs, limited drug coverage, and little for dental, vision, or hearing. Knowing the gaps is the first step to closing them.
Original Medicare covers hospital (Part A) and medical (Part B) care, but it was never designed to cover everything. The biggest surprise for most people: there's no annual out-of-pocket maximum, so a serious illness can mean large ongoing costs without extra coverage.
The main gaps in Original Medicare
- No cap on your out-of-pocket spending under Parts A and B alone.
- Routine dental, vision, and hearing are largely not covered.
- Prescription drugs require separate Part D coverage.
- Care outside the U.S. is generally not covered.
- Long-term custodial care is not covered.
Three ways to fill the gaps
You generally choose one of two paths, then add drug coverage. A Medigap (Supplement) policy pairs with Original Medicare to cover much of what you'd otherwise pay out of pocket. A Medicare Advantage plan replaces Original Medicare with a private plan that often bundles extras like dental and drugs. Part D adds prescription coverage.
The Medigap-vs-Advantage decision is personal and hard to reverse — this is where
No. Parts A and B alone have no annual cap, which is why many people add a Medigap policy or choose Medicare Advantage, which does have a cap.
Enrolling when first eligible avoids a lifelong late-enrollment penalty, even if you take few or no drugs now. It's usually worth having.
No. You choose one path — Original Medicare with Medigap, or Medicare Advantage — then add drug coverage as appropriate.
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