S3900 HCPCS code: Surface electromyography (emg)
S3900 is the HCPCS Level II code for surface electromyography (emg). 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 | 2001-07-01 |
| Last action effective | 2001-07-01 |
What changed for S3900
- 2001-07-01: S3900 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 S3900?
S3900 is the HCPCS Level II code for surface electromyography (emg). Short descriptor: "Surface emg".
Does Medicare cover S3900?
Coverage code I — Not payable by Medicare. Medicare does not pay separately under this code; another code applies.
Related S39 codes
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under S3900
- Watch S3900 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for S3900
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.