S8120: Oxygen contents, gaseous, 1 unit equals 1 cubic foot
S8120 is a HCPCS Level II code for oxygen contents, gaseous, 1 unit equals 1 cubic foot. It belongs to the Temporary National Codes (Non-Medicare) section. Medicare does not pay it: see the coverage note below before you bill it.
Medicare coverage: Not payable by Medicare
Medicare does not pay this code. It may still be valid for another payer, but a Medicare claim carrying it will not be reimbursed.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q4-Oct. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusI
Not valid for Medicare purposes. Medicare uses another code.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
The CMS record for S8120
- Long descriptor
- Oxygen contents, gaseous, 1 unit equals 1 cubic foot
- Short descriptor
- O2 contents gas cubic ft
- Added
- October 1, 2003
- BETOS
- Z2
- Pricing indicator
- 00: Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service: CMS's own analytic grouping.
Service not separately priced by Part B, not covered, bundled into another service, or used by Part A only.
Codes adjacent to S8120
HCPCS has no hierarchy: related items simply sit next to each other in the numbering. If S8120 is not quite right, the correct code is very often within a few positions of it.
- S8080Scintimammography (radioimmunoscintigraphy of the breast), unilateral, including supply of radiopharmaceutical
- S8085Fluorine-18 fluorodeoxyglucose (f-18 fdg) imaging using dual-head coincidence detection system (non-dedicated pet scan)
- S8092Electron beam computed tomography (also known as ultrafast ct, cine ct)
- S8096Portable peak flow meter
- S8097Asthma kit (including but not limited to portable peak expiratory flow meter, instructional video, brochure, and/or spacer)
- S8100Holding chamber or spacer for use with an inhaler or nebulizer; without mask
- S8101Holding chamber or spacer for use with an inhaler or nebulizer; with mask
- S8110Peak expiratory flow rate (physician services)
- S8121Oxygen contents, liquid, 1 unit equals 1 pound
- S8130Interferential current stimulator, 2 channel
- S8131Interferential current stimulator, 4 channel
- S8185Flutter device
- S8186Swivel adapter
- S8189Tracheostomy supply, not otherwise classified
- S8210Mucus trap
- S8262Mandibular orthopedic repositioning device, eachterminated