HCPCS drug code · CMS crosswalk
Magnesium Sulfate J-Code / HCPCS Code
In short
Magnesium Sulfate is billed under HCPCS J3475 — Injection, magnesium sulfate, per 500 mg. One billing unit is 500 mg. CMS's crosswalk lists 54 Magnesium Sulfate NDCs under this code.
Reference
- J3475
- Injection, magnesium sulfate, per 500 mgBilling unit: 500 mg
- Labelers
- Amneal Pharmaceuticals, LLC; Athenex Pharmaceutical Division, LLC; Avenacy Inc.; B. Braun Medical Inc.; Baxter Healthcare Corporation; Civica, Inc.; Exela Pharma Sciences, LLC; FreseniUS Kabi USA, LLCand 6 more
Medicare Part B payment limit
CMS ASP filePayment limit per unit$0.436
Per500 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
Magnesium Sulfate units and claim line
Enter the dose given to get the J3475 units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Magnesium Sulfate 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 |
|---|---|---|---|---|
| 00264-4204-52 | J3475 | B. Braun Medical Inc. | 24 × 50 | 96 |
| 00264-4205-52 | J3475 | B. Braun Medical Inc. | 24 × 50 | 192 |
| 00264-4206-54 | J3475 | B. Braun Medical Inc. | 24 × 100 | 192 |
| 00338-1708-40 | J3475 | Baxter Healthcare Corporation | 40 × 50 | 160 |
| 00338-1715-40 | J3475 | Baxter Healthcare Corporation | 40 × 100 | 320 |
| 00338-1719-40 | J3475 | Baxter Healthcare Corporation | 40 × 50 | 320 |
| 00338-6353-40 | J3475 | Baxter Healthcare Corporation | 40 × 100 | 240 |
| 00404-9902-20 | J3475 | Henry Schein Inc. | 20 | 20 |
| 00404-9903-10 | J3475 | Henry Schein Inc. | 10 | 10 |
| 00404-9904-02 | J3475 | Henry Schein Inc. | 2 | 2 |
| 00409-1754-10 | J3475 | Pfizer Inc | 10 × 10 | 100 |
| 00409-2050-20 | J3475 | Pfizer Inc | 20 × 500 | 800 |
| 00409-2168-77 | J3475 | Pfizer Inc | 25 × 20 | 500 |
| 00409-3164-12 | J3475 | Pfizer Inc | 12 × 1000 | 960 |
| 00409-6729-23 | J3475 | Pfizer Inc | 24 × 100 | 192 |
| 00409-6729-24 | J3475 | Pfizer Inc | 24 × 50 | 96 |
| 25021-0612-81 | J3475 | Sagent Pharmaceuticals | 10 × 50 | 40 |
| 25021-0612-82 | J3475 | Sagent Pharmaceuticals | 10 × 100 | 80 |
| 44567-0420-24 | J3475 | WG Critical Care, LLC | 24 × 50 | 96 |
| 44567-0421-24 | J3475 | WG Critical Care, LLC | 24 × 100 | 192 |
| 44567-0424-24 | J3475 | WG Critical Care, LLC | 24 × 50 | 192 |
| 47335-0992-01 | J3475 | Sun Pharmaceutical Global FZE. | 24 × 50 | 96 |
| 47335-0992-02 | J3475 | Sun Pharmaceutical Global FZE. | 24 × 100 | 192 |
| 51662-1235-01 | J3475 | HF Acquisition Co. LLC, DBA HealthFirst | 10 | 10 |
| 51662-1235-03 | J3475 | HF Acquisition Co. LLC, DBA HealthFirst | 10 × 10 | 100 |
| 51662-1352-01 | J3475 | HF Acquisition Co. LLC, DBA HealthFirst | 50 | 4 |
| 51662-1352-03 | J3475 | HF Acquisition Co. LLC, DBA HealthFirst | 24 × 50 | 96 |
| 51662-1390-01 | J3475 | HF Acquisition Co. LLC, DBA HealthFirst | 2 | 2 |
| 51662-1390-03 | J3475 | HF Acquisition Co. LLC, DBA HealthFirst | 25 × 2 | 50 |
| 51662-1451-01 | J3475 | HF Acquisition Co. LLC, DBA HealthFirst | 10 | 10 |
| 51754-1000-04 | J3475 | Exela Pharma Sciences, LLC | 25 × 10 | 250 |
| 63323-0064-03 | J3475 | FreseniUS Kabi USA, LLC | 25 × 2 | 50 |
| 63323-0064-11 | J3475 | FreseniUS Kabi USA, LLC | 25 × 10 | 250 |
| 63323-0064-23 | J3475 | FreseniUS Kabi USA, LLC | 25 × 2 | 50 |
| 63323-0064-43 | J3475 | FreseniUS Kabi USA, LLC | 25 × 2 | 50 |
| 63323-0106-01 | J3475 | FreseniUS Kabi USA, LLC | 24 × 100 | 192 |
| 63323-0106-05 | J3475 | FreseniUS Kabi USA, LLC | 24 × 50 | 96 |
| 63323-0106-10 | J3475 | FreseniUS Kabi USA, LLC | 12 × 1000 | 960 |
| 63323-0106-15 | J3475 | FreseniUS Kabi USA, LLC | 24 × 500 | 960 |
| 63323-0106-26 | J3475 | FreseniUS Kabi USA, LLC | 24 × 50 | 96 |
| 63323-0107-05 | J3475 | FreseniUS Kabi USA, LLC | 24 × 50 | 192 |
| 63323-0642-20 | J3475 | FreseniUS Kabi USA, LLC | 25 × 20 | 500 |
| 63323-0642-50 | J3475 | FreseniUS Kabi USA, LLC | 25 × 50 | 1250 |
| 70121-1719-02 | J3475 | Amneal Pharmaceuticals, LLC | 15 × 50 | 60 |
| 70121-1719-09 | J3475 | Amneal Pharmaceuticals, LLC | 24 × 50 | 96 |
| 70121-1720-03 | J3475 | Amneal Pharmaceuticals, LLC | 12 × 100 | 96 |
| 70121-1720-09 | J3475 | Amneal Pharmaceuticals, LLC | 24 × 100 | 192 |
| 70860-0501-82 | J3475 | Athenex Pharmaceutical Division, LLC | 24 × 100 | 192 |
| 70860-0502-81 | J3475 | Athenex Pharmaceutical Division, LLC | 24 × 50 | 192 |
| 72572-0511-40 | J3475 | Civica, Inc. | 40 × 50 | 160 |
| 83634-0500-81 | J3475 | Avenacy Inc. | 24 × 50 | 96 |
| 83634-0500-82 | J3475 | Avenacy Inc. | 24 × 100 | 192 |
| 83634-0500-83 | J3475 | Avenacy Inc. | 30 × 50 | 120 |
| 83634-0501-81 | J3475 | Avenacy Inc. | 24 × 50 | 192 |
Magnesium Sulfate: common questions
- What is the J-code for Magnesium Sulfate?
- Magnesium Sulfate is billed under HCPCS J3475 — Injection, magnesium sulfate, per 500 mg. One billing unit is 500 mg. CMS's crosswalk lists 54 Magnesium Sulfate NDCs under this code.
- How many J3475 billing units are in a package of Magnesium Sulfate?
- CMS lists 2 to 1,250 billing units per package, depending on the NDC, where one unit is 500 mg. Units to report are based on the dose given, not the package.
- Is J3475 a CPT code?
- No. J3475 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.