HCPCS drug code · CMS crosswalk
Fyarro J-Code / HCPCS Code
In short
Fyarro is billed under HCPCS J9331 — Injection, sirolimus protein-bound particles, 1 mg. One billing unit is 1 mg. CMS's crosswalk lists 1 Fyarro NDC under this code.
Reference
- J9331
- Injection, sirolimus protein-bound particles, 1 mgBilling unit: 1 mg
- Labelers
- Aadi Bioscience
Medicare Part B payment limit
CMS ASP filePayment limit per unit$91.03
Per1 mg
Coinsurance20%
Effective October 1, 2026 through December 31, 2026. Payment allowance limits subject to the ASP methodology are based on 2Q26 ASP data. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files
Fyarro units and claim line
Enter the dose given to get the J9331 units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Fyarro 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 |
|---|---|---|---|---|
| 80803-0153-50 | J9331 | Aadi Bioscience | 1 | 100 |
Fyarro: common questions
- What is the J-code for Fyarro?
- Fyarro is billed under HCPCS J9331 — Injection, sirolimus protein-bound particles, 1 mg. One billing unit is 1 mg. CMS's crosswalk lists 1 Fyarro NDC under this code.
- How many J9331 billing units are in a package of Fyarro?
- CMS lists 100 billing units per package, depending on the NDC, where one unit is 1 mg. Units to report are based on the dose given, not the package.
- Is J9331 a CPT code?
- No. J9331 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.