Short answer up top, then the exact rule. Here's what Original Medicare does and doesn't cover for a nebulizer in 2026 — and where a Medicare Advantage plan can fill the gap.
Quick answer: Yes. Part B covers a nebulizer — and some nebulizer medications — as durable medical equipment when they're reasonable and necessary and your provider orders them for use at home. You pay 20% of the Medicare-approved amount after the Part B deductible. Nebulizer drugs Part B doesn't cover fall under your Part D plan.
Medicare Advantage plans cover the same nebulizer equipment and drugs, but the copay, the approved supplier network, and any prior-authorization requirement come from the plan. If your plan includes drug coverage (an MA-PD), the nebulizer medications Part B doesn't pay for run through that plan's formulary — check that your specific drug is on it.
People with asthma, COPD, or another breathing condition who use inhaled medication at home. The detail worth checking before you fill anything: whether your specific nebulizer drug is billed under Part B or your Part D formulary, because the cost is very different.
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 →Part B covers some nebulizer medications along with the nebulizer itself, when they're reasonable and necessary. Part B only covers a limited number of outpatient drugs, though — generally ones you wouldn't administer yourself. Anything Part B doesn't cover goes through your Part D plan.
After you meet the Part B deductible you pay 20% of the Medicare-approved amount, as long as the supplier accepts assignment. Make sure both your provider and the DME supplier are enrolled in Medicare — otherwise the claim isn't paid and you can be charged more.
Coverage gaps in Original Medicare — like a nebulizer — 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: