S8131 HCPCS code: Interferential current stimulator, 4 channel
S8131 is the HCPCS Level II code for interferential current stimulator, 4 channel. Its Medicare coverage code is I (Not payable by Medicare): Medicare does not pay separately under this code; another code applies.
Code details
| Field | Value |
|---|---|
| Section | S codes — Temporary national codes (non-Medicare) |
| Coverage code | I — Not payable by Medicare |
| Pricing indicator | 00 — Not separately priced by Medicare |
| BETOS category | Z2 |
| Added | 2012-01-01 |
| Last action effective | 2012-01-01 |
What changed for S8131
- 2012-01-01: S8131 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code S8131?
S8131 is the HCPCS Level II code for interferential current stimulator, 4 channel. Short descriptor: "Interferential stim 4 chan".
Does Medicare cover S8131?
Coverage code I — Not payable by Medicare. Medicare does not pay separately under this code; another code applies.
Related S81 codes
- S8100 — Holding chamber or spacer for use with an inhaler or nebulizer; without mask
- S8101 — Holding chamber or spacer for use with an inhaler or nebulizer; with mask
- S8110 — Peak expiratory flow rate (physician services)
- S8120 — Oxygen contents, gaseous, 1 unit equals 1 cubic foot
- S8121 — Oxygen contents, liquid, 1 unit equals 1 pound
- S8130 — Interferential current stimulator, 2 channel
- S8185 — Flutter device
- S8186 — Swivel adapter
- S8189 — Tracheostomy supply, not otherwise classified
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Next steps
- Run a reimbursement report for a device billed under S8131
- Watch S8131 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for S8131
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.