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20 ML panitumumab 20 MG/ML Injection [Vectibix] — RxCUI 1657723

Name: 20 ML panitumumab 20 MG/ML Injection [Vectibix] (RxCUI 1657723)
Creator: Brian Staiger, PharmD

RxNorm drug concept · Semantic branded drug

RxCUI 1657723 Semantic branded drug · SBD ● Current RxNorm concept 2 FDA products 4 package NDCs Snapshot Jul 14, 2026

This page is curated, coded, and maintained by Dr. Brian Staiger, PharmD

Compiled from public NLM RxNorm and FDA (openFDA NDC directory) data sources. Editorial policy

What you’re looking at: the standardized identity of one medicine, as the U.S. drug-data system sees it. Below — every FDA-listed product, package code, price benchmark, and billing code that maps to it.

🗂️ Key Facts

RxCUI1657723

Official name20 ML panitumumab 20 MG/ML Injection [Vectibix]

Concept typeSemantic branded drug (SBD)

RxNorm statusCurrent RxNorm concept

Also known asVectibix 400 MG per 20 ML Injection; Vectibix 400 MG in 20 ML Injection

FDA products mapped2

Package NDCs mapped4

Reported Medicaid activity (SDUD)6,524 prescriptions · 42 state & territory Medicaid programs · latest period Q4 2025

RxNorm release07/06/2026

Snapshot dataJul 14, 2026

📖 Skip the Codes — Read It in Plain English.

Our pharmacist-built guide to Panitumumab Injection: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist

That's a really important question. Vectibix only works — and is only safe — in colorectal cancers with specific genetic profiles. If your tumor has certain RAS mutations (other th...
Why did my doctor order genetic testing before starting this treatment?
Almost everyone on Vectibix develops some kind of skin reaction — usually an acne-like rash, redness, dry or cracking skin, or nail tenderness. These usually start within the first...
What should I expect my skin to look like during treatment?

📖 Read our full Panitumumab Injection guide →

🕸️ Concept Web — How 20 ML panitumumab 20 MG/ML Injection [Vectibix] Connects

One RxCUI never lives alone. Follow the path from the raw ingredient down to the exact strength-and-form concepts FDA products carry — every stop is a real RxNorm concept with its own identifier. Hover or focus any chip for what it means.

This page's concept 20 ML panitumumab 20 MG/ML Injection [Vectibix] RxCUI 1657723 Semantic branded drug · SBD

Every web starts here: one RxCUI, one fixed meaning in the RxNorm vocabulary.

Ingredients 1

The active substance itself — no strength, form, or brand attached yet.
- Panitumumab 263034 IN
Brand names 1

The same medicine's trade names. A brand name alone says nothing about strength or form.
- Vectibix 675979 BN
Dose forms 6

The ingredient poured into a form — tablet, solution, cream — still without one fixed strength.
- Panitumumab Injection 1657702 SCDF
- Panitumumab Injectable Product 1160730 SCDG
- Panitumumab Injection [Vectibix] 1657704 SBDF
- Vectibix Injectable Product 1187748 SBDG
- Injection 1649574 DF
- Injectable Product 1151126 DFG
Clinical & branded drugs 3

Ingredient + strength + dose form. These are the concepts real FDA products actually carry.
- 20 ML panitumumab 20 MG/ML Injection 1657722 SCD
- Panitumumab 20 MG/ML 667879 SCDC
- Panitumumab 20 MG/ML [Vectibix] 667895 SBDC

Showing up to 8 concepts per family — 11 of 11 stored related concepts drawn.

These are official RxNorm vocabulary relationships — how concepts name and organize the same medicine. They do not establish therapeutic equivalence or substitutability: two concepts appearing in one web is never a statement that products can be swapped.

🔀 Generic ⇄ Brand Crosswalk

The same medicine has an unbranded (generic) identity and one or more brand-name identities — each with its own RxCUI. This is a naming relationship in RxNorm, not a statement that any two products are substitutable.

Generic (Clinical) Concepts

20 ML panitumumab 20 MG/ML Injection SCD · 1657722
Panitumumab 20 MG/ML SCDC · 667879
Panitumumab Injection SCDF · 1657702
Panitumumab Injectable Product SCDG · 1160730

Brand-Name Concepts

Panitumumab 20 MG/ML [Vectibix] SBDC · 667895
Panitumumab Injection [Vectibix] SBDF · 1657704
Vectibix Injectable Product SBDG · 1187748
Vectibix BN · 675979

📦 FDA Products & Package NDCs

2 products · 4 package NDCs

4 package NDCs map to RxCUI 1657723 in the current snapshot — up to 50 per page. Each linked NDC opens its full package page.

Package NDC	Package	Brand / generic name	Labeler	Marketing start
55513-0954-01	1 VIAL, SINGLE-DOSE in 1 CARTON (55513-954-01) / 5 mL in 1...	Vectibix	Amgen, Inc	2006-10-10
55513-0954-21	1 VIAL, SINGLE-DOSE in 1 CARTON (55513-954-21) / 5 mL in 1...	Vectibix	Amgen, Inc	2025-10-01
55513-0956-01	1 VIAL, SINGLE-DOSE in 1 CARTON (55513-956-01) / 20 mL in 1...	Vectibix	Amgen, Inc	2006-10-10
55513-0956-21	1 VIAL, SINGLE-DOSE in 1 CARTON (55513-956-21) / 20 mL in 1...	Vectibix	Amgen, Inc	2025-10-01

Observed labelers: Amgen, Inc (4) — this is the FDA-listed mapping footprint, not sales, inventory, availability, or market share.

🧾 Billing Codes (HCPCS)

Medical billing codes (HCPCS "J-codes") that connect to this concept's packages — used mostly when a clinic or hospital bills for a drug it administers. Each code links to its full billing page.

Code	Descriptor	Mapped packages	Sources
J9303	Panitumumab injection	4	CMS

⚠ A crosswalk is not coverage: an NDC↔HCPCS mapping does not guarantee any payer covers or pays the code. Always verify the current payer policy before billing.

🗃️ Sources & Limits

Atlas generation902fddb9-e9c1-4004-bf4c-dba4d51037c7

openFDA export observedJul 14, 2026

RxNorm release07/06/2026

Methodology2026-07-full-catalog-v1

A shared RxCUI does not prove interchangeability. Products mapped to the same concept are not thereby equivalent or substitutable — equivalence is a separate, product-level determination.
Listing here does not establish approval or coverage. Appearing in this snapshot is a data observation, not an FDA approval status or a payer coverage decision.
Missing data never means zero. A silent dataset (no price, no billing code, no utilization) means no observation — not that the real-world value is zero.
Counts describe the mapping footprint. Product, package, and labeler counts are the FDA-listed mapping footprint in this snapshot — not sales, inventory, availability, or market share.

This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.

Machine-readable JSON

Reference information about drug-concept identifiers and public regulatory data — not medical advice. Talk to your pharmacist or prescriber about your own medication.