HCPCS drug code · CMS crosswalk
Favlyxa J-Code / HCPCS Code
In short
Favlyxa is billed under HCPCS J9191 — Injection, fluorouracil (avyxa), 10 mg. One billing unit is 10 mg. CMS's crosswalk lists 1 Favlyxa NDC under this code.
Reference
- J9191
- Injection, fluorouracil (avyxa), 10 mgBilling unit: 10 mg
- Labelers
- Avyxa Pharma, LLC
Medicare Part B payment limit
CMS ASP fileEffective October 1, 2026 through December 31, 2026. Payment allowance limits subject to the ASP methodology are based on 2Q26 ASP data. CMS note: Added October 2026. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files
Favlyxa units and claim line
Enter the dose given to get the J9191 units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Favlyxa NDCs and billing units
From CMS’s ASP NDC–HCPCS crosswalk, effective October 1, 2026 through December 31, 2026. Billing units per package are CMS’s figures for the code’s unit.
| NDC (11-digit) | HCPCS | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| 83831-0143-01 | J9191 | Avyxa Pharma, LLC | 10 | 25 |
Favlyxa: common questions
- What is the J-code for Favlyxa?
- Favlyxa is billed under HCPCS J9191 — Injection, fluorouracil (avyxa), 10 mg. One billing unit is 10 mg. CMS's crosswalk lists 1 Favlyxa NDC under this code.
- How many J9191 billing units are in a package of Favlyxa?
- CMS lists 25 billing units per package, depending on the NDC, where one unit is 10 mg. Units to report are based on the dose given, not the package.
- Is J9191 a CPT code?
- No. J9191 is a HCPCS Level II code from CMS for the drug itself. Giving it, for example by injection or infusion, is usually reported with a separate CPT administration code.