NDC codes

FDA NDC Directory
Product NDC (as listed)50633-230Labeler and product segments. Claims need a package NDC.
Product NDC at billing width50633-0230Add the package segment from the table below.
Package NDCs as listed with the FDA, and the 11-digit 5-4-2 form used on claims. The highlighted digit is the added leading zero.
Package NDC11-digit (billing)PackageCopy
50633-230-01506330230011 VIAL, SINGLE-DOSE in 1 CARTON (50633-230-01) / 10 mL in 1 VIAL, SINGLE-DOSEMarketed from Sep 1, 2026

How the 11-digit form is made: The product segment has 3 digits, so one leading zero is added to it (5-3-2 → 5-4-2). Formatting the NDC does not by itself make it billable — the product, package and quantity must match what was dispensed or administered, and payer rules apply. Conversion rules

Product information

Brand name (proprietary)
Danyelza
Generic name (nonproprietary)
naxitamab
Active ingredients
Naxitamab — 40 mg/10mL
Dosage form
Injection
Route
Intravenous
Product type
Prescription drug
Marketing category
BLA — Biologics License ApplicationApplication BLA 761171
Marketing start
Listing expires
Other FDA classes
Glycolipid Disialoganglioside-directed Antibody Interactions (Mechanism)
Identifiers
Product ID 50633-230_5878035d-081a-1653-e063-6394a90af965SPL ID 5878035d-081a-1653-e063-6394a90af965SPL set ID b0f5ee96-369f-4cb9-a783-3bfa70fe8f90RxCUI 2474239, 2474244UNII 9K8GNJ2874
Pharmacologic class
Glycolipid Disialoganglioside-directed Antibody

Billing references

What Med-Code can say about coding this product, and where each statement comes from. Nothing here is inferred from the name alone.

HCPCS codeNo match

No drug-specific HCPCS code in Med-Code's directory for this product. The directory is curated and not complete — check the current CMS HCPCS file before billing.

Administration

Drug administration (CPT 96360–96549)

When a clinician administers the drug, the administration is reported separately. Codes in this range cover hydration, therapeutic injections and infusions, and chemotherapy or other complex drug administration. The right code depends on route, duration and drug type, and self-administered drugs are not billed this way.

How CPT relates to drug billing

NDC on a medical claim

N450633023001 followed by a unit qualifier and the quantity

Package 50633-0230-01. Unit qualifiers: F2 (international unit), GR (gram), ME (milligram), ML (milliliter), UN (unit (each)). The qualifier and quantity depend on what was given. About the N4 qualifier

Product label

Current FDA label (SPL), effective . This label includes a boxed warning.

Indications (excerpt from the label)

DANYELZA is indicated, in combination with granulocyte-macrophage colony-stimulating factor (GM-CSF), for the treatment of pediatric patients 1 year of age and older and adult patients with relapsed or refractory high-risk neuroblastoma in the bone or bone marrow who have demonstrated a partial response, minor response, or stable disease to prior therapy. This indication is approved under accelerated approval based on overall response rate and duration of response [see Clinical Studies (14) ] . Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s). DANYELZA is a GD2-binding monoclonal antibody indicated, in c…

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

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