HCPCS Level II · Temporary national codes (non-Medicare)
S8121Oxygen contents, liquid, 1 unit equals 1 pound
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About S8121
S8121 is an HCPCS Level II code in the S series (temporary national codes (non-Medicare)), describing oxygen contents, liquid, 1 unit equals 1 pound.
It was added to HCPCS effective 10/01/2003.
Its Medicare coverage code is "I", meaning it is not payable by Medicare (another code or method is used).
Details
- Short description
- O2 contents liquid lb
- Date added
- 10/01/2003
- Action effective
- 10/01/2003
- BETOS
- Z2
Related S81xx codes
- 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)
- S8120Oxygen contents, gaseous, 1 unit equals 1 cubic foot
- S8130Interferential current stimulator, 2 channel
- S8131Interferential current stimulator, 4 channel
- S8185Flutter device
- S8186Swivel adapter
- S8189Tracheostomy supply, not otherwise classified
Common questions about S8121
Is HCPCS S8121 still valid?
- Yes. S8121 is active in the CMS October 2026 HCPCS file.
Does Medicare cover S8121?
- Its coverage code is "I": it is not payable by Medicare (another code or method is used). Check the local coverage determination for your region.