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FDA National Drug Codes

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A reference for National Drug Codes, HCPCS J-codes and how drug billing codes fit together. NDC data comes from the FDA through openFDA.

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NDC Lookup

FDA National Drug Codes

NDC Lookup

Browse every product in the FDA NDC Directory below, or search by NDC, brand, generic, manufacturer or HCPCS code. Each product has its own page with package NDCs in 11-digit billing format.

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NDCs work with or without dashes. Names can be partial: “keytr” finds Keytruda.

SearchSearch all records for “66658-0510-01”FDA NDC Directory, J-codes, classes and glossary

Source: FDA NDC Directory via openFDA; Med-Code HCPCS directory (curated)
Source data updated: Sep 25, 2026

The NDC Directory lists products with current listings. Search results are cached for up to 6 hours.

Reference information only. Verify codes and billing rules against the applicable payer and official source before submitting a claim. How Med-Code handles data.

NDC match

Package NDC match

66658-510-01

Gamifant (emapalumab-lzsg)

Emapalumab 100 mg/20mL · Injection · Swedish Orphan Biovitrum AB (publ)

1 VIAL, SINGLE-USE in 1 CARTON (66658-510-01) / 20 mL in 1 VIAL, SINGLE-USE

View NDC details