Medicare doesn’t usually cover humidifiers or other similar items, like room heaters, dehumidifiers, or electric air cleaners.

However, Medicare covers oxygen humidifiers used with certain covered durable medical equipment (DME) when 


How often is it covered?
Your costs in Original Medicare

You pay 100% for most room humidifiers or other similar items. You won’t have to pay a separate amount for an oxygen humidifier. The cost of a humidifier will be included in the monthly fee for your oxygen equipment.

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