HCPCS drug code · CMS crosswalk
Cyanocobalamin J-Code / HCPCS Code
In short
Cyanocobalamin is billed under HCPCS J3420 — Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg. One billing unit is 1000 mcg. CMS's crosswalk lists 39 Cyanocobalamin NDCs under this code.
Reference
- J3420
- Injection, vitamin b-12 cyanocobalamin, up to 1000 mcgBilling unit: 1000 mcg
- Labelers
- A-S Medication Solutions; American Regent, Inc.; BluePoint Laboratories; FreseniUS Kabi USA, LLC; HF Acquisition Co. LLC, DBA HealthFirst; Henry Schein Inc.; Hikma Pharmaceuticals USA Inc.; Lifestar Pharmaand 6 more
Medicare Part B payment limit
CMS ASP filePayment limit per unit$0.648
Per1000 mcg
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
Cyanocobalamin units and claim line
Enter the dose given to get the J3420 units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Cyanocobalamin 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 |
|---|---|---|---|---|
| 00143-9619-01 | J3420 | Hikma Pharmaceuticals USA Inc. | 30 | 30 |
| 00143-9619-10 | J3420 | Hikma Pharmaceuticals USA Inc. | 10 × 30 | 300 |
| 00143-9620-10 | J3420 | Hikma Pharmaceuticals USA Inc. | 10 × 10 | 100 |
| 00143-9621-25 | J3420 | Hikma Pharmaceuticals USA Inc. | 25 × 1 | 25 |
| 00404-9783-30 | J3420 | Henry Schein Inc. | 30 | 30 |
| 00404-9786-10 | J3420 | Henry Schein Inc. | 10 | 10 |
| 00404-9840-10 | J3420 | Henry Schein Inc. | 10 | 10 |
| 00404-9995-30 | J3420 | Henry Schein Inc. | 30 | 30 |
| 00517-0031-25 | J3420 | American Regent, Inc. | 25 × 1 | 25 |
| 00517-0032-25 | J3420 | American Regent, Inc. | 25 × 10 | 250 |
| 00517-0130-01 | J3420 | American Regent, Inc. | 30 | 30 |
| 25021-0502-01 | J3420 | Sagent Pharmaceuticals | 25 × 1 | 25 |
| 50090-2709-00 | J3420 | A-S Medication Solutions | 25 × 1 | 25 |
| 50090-6229-00 | J3420 | A-S Medication Solutions | 25 × 1 | 25 |
| 51662-1394-01 | J3420 | HF Acquisition Co. LLC, DBA HealthFirst | 30 | 30 |
| 51662-1647-03 | J3420 | HF Acquisition Co. LLC, DBA HealthFirst | 25 × 1 | 25 |
| 63323-0044-01 | J3420 | FreseniUS Kabi USA, LLC | 25 × 1 | 25 |
| 63323-0044-44 | J3420 | FreseniUS Kabi USA, LLC | 25 × 1 | 25 |
| 68001-0542-60 | J3420 | BluePoint Laboratories | 25 × 1 | 25 |
| 68001-0640-60 | J3420 | BluePoint Laboratories | 25 × 1 | 25 |
| 69680-0112-10 | J3420 | Vitruvias Therapeutics, Inc. | 10 × 1 | 10 |
| 69680-0112-25 | J3420 | Vitruvias Therapeutics, Inc. | 25 × 1 | 25 |
| 69680-0113-99 | J3420 | Vitruvias Therapeutics, Inc. | 10 × 10 | 100 |
| 69680-0121-05 | J3420 | Vitruvias Therapeutics, Inc. | 5 × 30 | 150 |
| 70069-0005-10 | J3420 | Somerset Pharma, LLC | 25 × 1 | 25 |
| 70069-0171-10 | J3420 | Somerset Pharma, LLC | 10 × 30 | 300 |
| 70069-0172-10 | J3420 | Somerset Pharma, LLC | 10 × 10 | 100 |
| 70710-1663-07 | J3420 | Zydus Pharmaceuticals (USA) Inc. | 25 × 1 | 25 |
| 70710-1664-06 | J3420 | Zydus Pharmaceuticals (USA) Inc. | 10 × 10 | 100 |
| 70710-1664-07 | J3420 | Zydus Pharmaceuticals (USA) Inc. | 25 × 10 | 250 |
| 70710-1665-01 | J3420 | Zydus Pharmaceuticals (USA) Inc. | 30 | 30 |
| 70710-1665-05 | J3420 | Zydus Pharmaceuticals (USA) Inc. | 5 × 30 | 150 |
| 70756-0635-25 | J3420 | Lifestar Pharma | 25 × 1 | 25 |
| 71288-0300-02 | J3420 | Meitheal Pharmaceuticals Inc. | 25 × 1 | 25 |
| 71288-0301-11 | J3420 | Meitheal Pharmaceuticals Inc. | 10 × 10 | 100 |
| 71288-0302-30 | J3420 | Meitheal Pharmaceuticals Inc. | 30 | 30 |
| 71288-0303-02 | J3420 | Meitheal Pharmaceuticals Inc. | 25 × 1 | 25 |
| 71288-0303-92 | J3420 | Meitheal Pharmaceuticals Inc. | 25 × 1 | 25 |
| 72603-0650-25 | J3420 | Northstar RxLLC | 25 × 1 | 25 |
Cyanocobalamin: common questions
- What is the J-code for Cyanocobalamin?
- Cyanocobalamin is billed under HCPCS J3420 — Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg. One billing unit is 1000 mcg. CMS's crosswalk lists 39 Cyanocobalamin NDCs under this code.
- How many J3420 billing units are in a package of Cyanocobalamin?
- CMS lists 10 to 300 billing units per package, depending on the NDC, where one unit is 1000 mcg. Units to report are based on the dose given, not the package.
- Is J3420 a CPT code?
- No. J3420 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.