HCPCS drug code · CMS crosswalk
Anavip J-Code / HCPCS Code
In short
Anavip is billed under HCPCS J0841 — Injection, crotalidae immune f(ab')2 (equine), 120 mg. One billing unit is 120 mg. CMS's crosswalk lists 1 Anavip NDC under this code.
Reference
- J0841
- Injection, crotalidae immune f(ab')2 (equine), 120 mgBilling unit: 120 mg
- Labelers
- Rare Disease Therapeutics, Inc.
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
Anavip units and claim line
Enter the dose given to get the J0841 units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Anavip 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 |
|---|---|---|---|---|
| 66621-0790-02 | J0841 | Rare Disease Therapeutics, Inc. | 1 | 1 |
Anavip: common questions
- What is the J-code for Anavip?
- Anavip is billed under HCPCS J0841 — Injection, crotalidae immune f(ab')2 (equine), 120 mg. One billing unit is 120 mg. CMS's crosswalk lists 1 Anavip NDC under this code.
- How many J0841 billing units are in a package of Anavip?
- CMS lists 1 billing units per package, depending on the NDC, where one unit is 120 mg. Units to report are based on the dose given, not the package.
- Is J0841 a CPT code?
- No. J0841 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.