Short answer up top, then the exact rule. Here's what Original Medicare does and doesn't cover for insulin in 2026 — and where a Medicare Advantage plan can fill the gap.
Quick answer: Yes — and your cost is capped. A one-month supply of each covered insulin costs no more than $35, and you don't pay a deductible for it. That $35 cap applies whether the insulin is covered under Part D or under Part B (for insulin used with a covered pump).
Medicare Advantage (Part C) plans that include drug coverage (MA-PD) apply the same $35 monthly insulin cap with no deductible. If you use a Part B-covered pump, the Part B insulin cap applies through the plan as well. Confirm your specific insulin is on the plan's formulary so the cap applies cleanly.
Anyone on Medicare who uses insulin. The practical takeaway: no covered insulin should cost you more than $35 for a month's supply — if a pharmacy quotes more, it's usually a formulary or coverage-tier issue worth flagging to the plan before you pay.
See the current Part A, Part B, and Part D numbers — premiums, deductibles, and the new drug cap — in one place. Free, no signup.
See 2026 Medicare Costs →No more than $35 for a one-month supply of each covered insulin product, with no deductible. A three-month supply is capped at $35 per month's supply — generally no more than $105 total.
Yes. The $35 monthly cap and the no-deductible rule apply to Part B-covered insulin used with a Part B durable-medical-equipment insulin pump, in addition to Part D-covered insulin. Insulin from pens or patch pumps is covered under Part D, where the same $35 cap applies.
Coverage gaps in Original Medicare — like insulin — are exactly what a Medicare Advantage or Medigap plan is meant to fill. Our free Enrollment Finder shows the window you can switch in, and the guide library walks through the trade-offs. This page is free to share with anyone weighing their options.
Open the Enrollment Finder →This answer is based on U.S. government Medicare coverage rules: