HCPCS drug code · CMS crosswalk
Vykoura J-Code / HCPCS Code
In short
Vykoura is billed under HCPCS J0644 — Injection, leucovorin calcium (avyxa), 1 mg. One billing unit is 1 mg. CMS's crosswalk lists 3 Vykoura NDCs under this code.
Reference
- J0644
- Injection, leucovorin calcium (avyxa), 1 mgBilling unit: 1 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
Vykoura units and claim line
Enter the dose given to get the J0644 units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Vykoura 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 |
|---|---|---|---|---|
| 83831-0147-05 | J0644 | Avyxa Pharma, LLC | 5 | 50 |
| 83831-0148-35 | J0644 | Avyxa Pharma, LLC | 35 | 350 |
| 83831-0149-50 | J0644 | Avyxa Pharma, LLC | 50 | 500 |
Vykoura: common questions
- What is the J-code for Vykoura?
- Vykoura is billed under HCPCS J0644 — Injection, leucovorin calcium (avyxa), 1 mg. One billing unit is 1 mg. CMS's crosswalk lists 3 Vykoura NDCs under this code.
- How many J0644 billing units are in a package of Vykoura?
- CMS lists 50 to 500 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 J0644 a CPT code?
- No. J0644 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.