HCPCS Level II · Durable medical equipment
E0446Topical oxygen delivery system, not otherwise specified, includes all supplies and accessories
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About E0446
E0446 is an HCPCS Level II code in the E series (durable medical equipment), describing topical oxygen delivery system, not otherwise specified, includes all supplies and accessories.
It was added to HCPCS effective 01/01/2011, and its current record took effect 10/01/2017.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Topical ox deliver sys, nos
- Date added
- 01/01/2011
- Action effective
- 10/01/2017
- BETOS
- D1E
Related E04xx codes
- E0424Stationary compressed gaseous oxygen system, rental; includes container, contents, regulator, flowmeter, humidifier, nebulizer, cannula or mask, and tubing
- E0425Stationary compressed gas system, purchase; includes regulator, flowmeter, humidifier, nebulizer, cannula or mask, and tubing
- E0430Portable gaseous oxygen system, purchase; includes regulator, flowmeter, humidifier, cannula or mask, and tubing
- E0431Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing
- E0433Portable liquid oxygen system, rental; home liquefier used to fill portable liquid oxygen containers, includes portable containers, regulator, flowmeter, humidifier, cannula or mask and tubing, with or without supply reservoir and contents gauge
- E0434Portable liquid oxygen system, rental; includes portable container, supply reservoir, humidifier, flowmeter, refill adaptor, contents gauge, cannula or mask, and tubing
- E0435Portable liquid oxygen system, purchase; includes portable container, supply reservoir, flowmeter, humidifier, contents gauge, cannula or mask, tubing and refill adaptor
- E0439Stationary liquid oxygen system, rental; includes container, contents, regulator, flowmeter, humidifier, nebulizer, cannula or mask, & tubing
- E0440Stationary liquid oxygen system, purchase; includes use of reservoir, contents indicator, regulator, flowmeter, humidifier, nebulizer, cannula or mask, and tubing
- E0441Stationary oxygen contents, gaseous, 1 month's supply = 1 unit
- E0442Stationary oxygen contents, liquid, 1 month's supply = 1 unit
- E0443Portable oxygen contents, gaseous, 1 month's supply = 1 unit
Common questions about E0446
Is HCPCS E0446 still valid?
- Yes. E0446 is active in the CMS October 2026 HCPCS file.
Does Medicare cover E0446?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.