Typically, inhalers (and the drugs administered by inhalers) are covered under Medicare Part D and not original Medicare (Parts A & B).
A nebulizer used at home may be covered under Part B as durable medical equipment, however, traditional inhalers and other inhalation type drugs would be covered under Part D.
If you’re under original Medicare (and have/don’t have a Medicare Supplement plan) and would like to have coverage for your inhalers (and the drugs administered by them), you should secure a stand-alone Part D prescription drug plan to have them covered. If you’re on Medicare Advantage instead, check to see if your plan includes prescription drug coverage as it may cover the inhalers as well.
Please note, whichever type of health plan structure you have, drug coverage will have a shared cost involved. Be sure to check with your carrier to see how the inhalers will be covered and how much.
I hope the information is helpful – please feel free to contact me with any other questions. Thanks very much.