HCPCS Code J1439: Injection, Ferric Carboxymaltose, 1 mg

For HCPCS Code J1439, each billing unit equals 1 mg of injection ferric carboxymaltose 1. A 1500 mg dose would be billed as 1,500 units. Always ensure that the claim reflects the total intravenous infusion dose administered.

Pair J1439 with the appropriate CPT code for the diagnostic injection or intravenous infusion. Most commonly, this is CPT 96365 for the initial infusion (up to 1 hour). If the infusion is sequential or additional, use CPT 96374 or related infusion codes based on timing and complexity.

Yes. For adult patients ≥50 kg, the recommended regimen is two doses of 750 mg at least 7 days apart (total cumulative dose of 1500 mg). For patients <50 kg, the dose is 15 mg/kg per infusion, also given at least 7 days apart. Document the weight-based dosing rationale and underlying condition (e.g., neoplastic disease code neoplasm, chronic kidney disease, or other chronic diseases) to support medical necessity.