Magnesium Sulfate Injection, Solution
NDC Package 31722-394-32

View Billable Units, 11-Digit Conversion Format, and RxNorm mappings
Table of Contents
    1. Package Information
    2. NDC HCPCS Crosswalk
    3. Other Packages
    4. Frequently Asked Questions

Package Information

Magnesium Sulfate (magnesium sulfate heptahydrate) injection is magnesium Sulfate Injection, USP is suitable for replacement therapy in magnesium deficiency, especially in acute hypomagnesemia accompanied by signs of tetany similar to those observed in hypocalcemia. This formulation utilizes a injection, solution delivery system. Marketed by Camber Pharmaceuticals, Inc., this product is identified by NDC 31722-394 and is authorized under FDA application ANDA219777.

Identification & Billing

NDC Package Code
31722-394-32
Package Description
25 VIAL, SINGLE-DOSE in 1 CARTON / 2 mL in 1 VIAL, SINGLE-DOSE (31722-394-31)
Product Code
31722-394
11-Digit Billing Format
31722039432
Billing Unit
ML - Billing unit of "milliliter" is used when a product is measured by its liquid volume.
RxNorm Crosswalk

Clinical Specifications

Proprietary Name
Magnesium Sulfate
Non-Proprietary Name
Magnesium Sulfate Heptahydrate
Substance Name
Magnesium Sulfate Heptahydrate
Dosage Form
Injection, Solution - A liquid preparation containing one or more drug substances dissolved in a suitable solvent or mixture of mutually miscible solvents that is suitable for injection.
Administration Route
  • Intramuscular - Administration within a muscle.
  • Intravenous - Administration within or into a vein or veins.
Active Ingredient(s)
MAGNESIUM SULFATE HEPTAHYDRATE 500 mg/mL
Pharmacologic Class
Usage Information
Magnesium Sulfate Injection, USP is suitable for replacement therapy in magnesium deficiency, especially in acute hypomagnesemia accompanied by signs of tetany similar to those observed in hypocalcemia. In such cases, the serum magnesium level is usually below the lower limit of normal (1.5 to 2.5 mEq/L) and the serum calcium level is normal (4.3 to 5.3 mEq/L) or elevated. In total parenteral nutrition (TPN), magnesium sulfate may be added to the nutrient admixture to correct or prevent hypomagnesemia which can arise during the course of therapy. Magnesium sulfate injection is also indicated for the prevention and control of seizures in pre-eclampsia and eclampsia, respectively.

Regulatory & Marketing

Labeler Name
Camber Pharmaceuticals, Inc.
Product Type
Human Prescription Drug
FDA Application #
ANDA219777
Marketing Category
ANDA - A product marketed under an approved Abbreviated New Drug Application.
Start Marketing Date
05-28-2025
Listing Expiration
12-31-2026
Exclude Flag
N
Sample Package
No

Hierarchy Structure

Code Lineage

The NDC Directory contains ONLY information on final marketed drugs submitted to FDA electronically by labelers. A labeler might be a manufacturer, re-packager or re-labeler. The product information included in the NDC directory does not indicate that FDA has verified the information provided by the product labeler. Assigned NDC numbers are not in any way an indication of FDA approval of the product.

* Please review the full disclaimer at the bottom of this page.

Billing & HCPCS Mapping

To facilitate insurance claims and reimbursement, this drug package is mapped to specific HCPCS administrative codes. This crosswalk aligns clinical data with the billing standards used in ASP (Average Sales Price), AWP, and OPPS payment systems. Use the cards below to identify the correct billable units for provider claims.

J3475
Source: PDAC
INJECTION, MAGNESIUM SULFATE, PER 500 MG
HCPCS Dosage 500 MG
Units / Pkg

Note for Medical Coders: These mappings are synthesized from various CMS datasets including OPPS, PrEP, and DAC (Data Analysis and Coding) contractors. Always confirm unit conversions against the current quarter's pricing files before final submission.

* Please review the full disclaimer at the bottom of this page.

Other Available Packages

The following commercial packages are registered under the same Product NDC (31722-394). Click a package code to view its specific billing and regulatory data.

31722-394-33
25 VIAL, SINGLE-DOSE in 1 CARTON / 10 mL in 1 VIAL, SINGLE-DOSE (31722-394-10)
31722-394-34
25 VIAL, SINGLE-DOSE in 1 CARTON / 20 mL in 1 VIAL, SINGLE-DOSE (31722-394-20)
31722-394-35
25 VIAL, SINGLE-DOSE in 1 CARTON / 50 mL in 1 VIAL, SINGLE-DOSE (31722-394-50)

* Please review the full disclaimer at the bottom of this page.

Frequently Asked Questions

What is the distribution configuration for this product package?

The code 31722-394-32 identifies a specific commercial package of 25 vial, single-dose in 1 carton / 2 ml in 1 vial, single-dose (31722-394-31) of Magnesium Sulfate, a human prescription drug labeled by Camber Pharmaceuticals, Inc.. This injection, solution is formulated for intramuscular; intravenous use and contains magnesium sulfate heptahydrate as the active substance.

Is this product currently listed with the FDA?

Yes, this product is active and verified within the NDC Directory. It was introduced to the market by Camber Pharmaceuticals, Inc. on May 28, 2025. The current certification is valid through December 31, 2026.

How is this Camber Pharmaceuticals, Inc. product billed for insurance claims?

For medical billing and reimbursement, this package follows the 11-digit CMS format: 31722039432. Quantities are measured in per "ml or milliliter", products billed per milliliter are usually products measured by liquid volume.. The table below illustrates the segment conversion from the 10-digit labeler code to the 11-digit provider format.

11-Digit Code Conversion

Billing payers usually require a 5-4-2 segment configuration. Below is the conversion from the 10-digit package format to the 11-digit billing format:

10-Digit Format (5-3-2)
31722-394-32
11-Digit CMS (5-4-2)
31722-0394-32

Note: The zero is added to the Product segment to maintain the 5-4-2 structure.