Favlyxa Injection, Solution
NDC Package 83831-143-01

View Billable Units, 11-Digit Conversion Format, and RxNorm mappings
Table of Contents
    1. Package Information
    2. Frequently Asked Questions

Package Information

Favlyxa (fluorouracil) injection is fluorouracil is used to treat various types of cancer. This formulation utilizes a injection, solution delivery system. Marketed by Avyxa Pharma, Llc, this product is identified by NDC 83831-143 and is authorized under FDA application NDA220201.

Identification & Billing

NDC Package Code
83831-143-01
Package Description
1 VIAL, SINGLE-DOSE in 1 CARTON / 10 mL in 1 VIAL, SINGLE-DOSE
Product Code
83831-143
11-Digit Billing Format
83831014301
Billing Unit
ML - Billing unit of "milliliter" is used when a product is measured by its liquid volume.
RxNorm Crosswalk

Clinical Specifications

Proprietary Name
Favlyxa
Non-Proprietary Name
Fluorouracil
Substance Name
Fluorouracil
Dosage Form
Injection, Solution - A liquid preparation containing one or more drug substances dissolved in a suitable solvent or mixture of mutually miscible solvents that is suitable for injection.
Administration Route
Intravenous - Administration within or into a vein or veins.
Active Ingredient(s)
FLUOROURACIL 25 mg/mL
Pharmacologic Class
Usage Information
Fluorouracil is used to treat various types of cancer. It is a chemotherapy drug that is used to slow or stop cancer cell growth. You should be tested for a DPD enzyme deficiency before you start treatment with fluorouracil. Ask your doctor for more details.

Regulatory & Marketing

Labeler Name
Avyxa Pharma, Llc
Product Type
Human Prescription Drug
FDA Application #
NDA220201
Marketing Category
NDA - A product marketed under an approved New Drug Application.
Start Marketing Date
04-01-2026
Listing Expiration
12-31-2027
Exclude Flag
N
Sample Package
No

Hierarchy Structure

Code Lineage

The NDC Directory contains ONLY information on final marketed drugs submitted to FDA electronically by labelers. A labeler might be a manufacturer, re-packager or re-labeler. The product information included in the NDC directory does not indicate that FDA has verified the information provided by the product labeler. Assigned NDC numbers are not in any way an indication of FDA approval of the product.

* Please review the full disclaimer at the bottom of this page.

Frequently Asked Questions

What is the distribution configuration for this product package?

The code 83831-143-01 identifies a specific commercial package of 1 vial, single-dose in 1 carton / 10 ml in 1 vial, single-dose of Favlyxa, a human prescription drug labeled by Avyxa Pharma, Llc. This injection, solution is formulated for intravenous use and contains fluorouracil as the active substance.

Is this product currently listed with the FDA?

Yes, this product is active and verified within the NDC Directory. It was introduced to the market by Avyxa Pharma, Llc on April 01, 2026. The current certification is valid through December 31, 2027.

What are the primary indications for this medication?

Fluorouracil is used to treat various types of cancer. It is a chemotherapy drug that is used to slow or stop cancer cell growth. You should be tested for a DPD enzyme deficiency before you start treatment with fluorouracil. Ask your doctor for more details.

How is this Avyxa Pharma, Llc product billed for insurance claims?

For medical billing and reimbursement, this package follows the 11-digit CMS format: 83831014301. Quantities are measured in per "ml or milliliter", products billed per milliliter are usually products measured by liquid volume.. The table below illustrates the segment conversion from the 10-digit labeler code to the 11-digit provider format.

11-Digit Code Conversion

Billing payers usually require a 5-4-2 segment configuration. Below is the conversion from the 10-digit package format to the 11-digit billing format:

10-Digit Format (5-3-2)
83831-143-01
11-Digit CMS (5-4-2)
83831-0143-01

Note: The zero is added to the Product segment to maintain the 5-4-2 structure.