VECTIBIX J Code: J9303

Drug & Product Overview

HCPCS Descriptor Injection, panitumumab, 10 mg

HCPCS Added Date January 1, 2008

Manufacturer Amgen

Route of Administration Intravenous

Generic Status Single-Source; Branded

Dosage Type Single-Dose

Dosage Form Solution

About VECTIBIX

Vectibix is a medication aligned to the HCPCS J Code: J9303 for billing, pricing, and reimbursement purposes in the United States. This Oncology medication is administered via the intravenous route and manufactured by Amgen.

According to CMS Drug Use Information: This medication is used to treat a certain type of cancer of the colon (large intestine) or rectum. Panitumumab is a man-made protein (monoclonal antibody) that binds to a certain protein (epidermal growth factor receptor-EGFR). It works by slowing or stopping the growth of cancer cells.

Disclaimer: This is a summary and does not contain all possible information about this product. For complete information about this product or your specific health needs, ask your healthcare professional.

NDC Code Information

Based on publicly available CMS files. The list of NDCs below is not exhaustive.

NDC Code	Drug	Manufacturer	Billing Units / Pkg	Package Size
55513-0954-01	Vectibix	Amgen, Inc	10	100 MG / 5 ML
55513-0954-21	Vectibix	Amgen, Inc	10	100 MG / 5 ML
55513-0956-01	Vectibix	Amgen, Inc	40	400 MG / 20 ML
55513-0956-21	Vectibix	Amgen, Inc	40	400 MG / 20 ML

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VECTIBIX Pricing & Reimbursement

J9303 Private Payer Reimbursement

$179.89 / HCPCS unit as of Jan 2026

National median reimbursement across major commercial payers.

Create an account on PayerPrice for more information →

Historical Graphing and Billing Calculator

per HCPCS unit

As of Q3 2026

VECTIBIX Claims Performance

Claims from Jan 2026 – Aug 2026

Claim Denial Rate 14.89%

Avg. Days to File 9.6days

Avg. Days to Pay 26.3days

Real-world claims performance from FocalPoint, OnPoint Oncology's reimbursement analytics platform, with claims data accrued at the clearing house level.

Explore J9303 claims analytics on FocalPoint →

VECTIBIX CPT Administration Codes

CPT Code	Description
96413	Chemotherapy administration, intravenous infusion technique; up to 1 hour, single or initial substance/drug
96415	Chemotherapy administration, intravenous infusion technique; each additional hour (List separately in addition to code for primary procedure)

JW / JZ modifiers apply

CMS has identified Vectibix (J9303) as a HCPCS code with single-dose containers. Therefore, the JW/JZ wastage modifiers could be required for billing purposes. Wastage billing guide →

VECTIBIX Medically Unlikely Edits (MUE)

The most billing units of J9303 Medicare will pay for one patient in one day, as published by CMS. 1 unit = 10 mg.

Practitioner Office & Hospital Outpatient

90 units / day

= 900 mg per day

MAI 3 · Date of Service Edit: Clinical. Per-day limit based on clinical expectations; excess units are denied but may be appealed with documentation of medical necessity. See all MUE limits →

VECTIBIX Clinical Information

Indications and drug classification.

Treated Diseases & Conditions

This list of indications is not exhaustive and may be subject to errors. The information on BuyandBill.com is intended for informational purposes only and should not be used for medical advice.

Metastatic Colorectal Cancer

Drug Class

AntibodiesMonoclonal [CS]Epidermal Growth Factor Receptor Antagonist [EPC]HER1 Antagonists [MoA]

Frequently Asked Questions

Is there an available Vectibix billing and coding guide?

Billing and coding information for VECTIBIX can be found through Amgen. Visit Here →

Are there any available Vectibix patient assistance programs?

VECTIBIX patient assistance information can be found through Amgen. Visit Here →

Where can I find Vectibix prescribing information?

VECTIBIX prescribing information can be found at the link below: Visit Here →

Where can I find Vectibix side effect information?

Information regarding VECTIBIX's side effects can be found at MedlinePlus Visit Here →

Does billing VECTIBIX require JZ/JW wastage modifiers?

CMS has identified VECTIBIX(J9303) as a HCPCS code with single-dose containers. Therefore, the JW/JZ wastage modifiers could be required for billing purposes. See CMS guidelines on use of the JZ and JW wastage modifiers below.

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