S3904 HCPCS code: Masters two step
S3904 is the HCPCS Level II code for masters two step. 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 | 2001-01-01 |
| Last action effective | 2001-01-01 |
What changed for S3904
- 2001-01-01: S3904 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 S3904?
S3904 is the HCPCS Level II code for masters two step. Short descriptor: "Masters two step".
Does Medicare cover S3904?
Coverage code I — Not payable by Medicare. Medicare does not pay separately under this code; another code applies.
Related S39 codes
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Next steps
- Run a reimbursement report for a device billed under S3904
- Watch S3904 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for S3904
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.