Enflonsia Injection, Solution
NDC Package 0006-5073-01

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

Package Information

Enflonsia (clesrovimab) injection is eNFLONSIA is indicated for the prevention of respiratory syncytial virus (RSV) lower respiratory tract disease in neonates and infants who are born during or entering their first RSV season. This formulation utilizes a injection, solution delivery system. Marketed by Merck Sharp & Dohme Llc, this product is identified by NDC 0006-5073 and is authorized under FDA application BLA761432.

Identification & Billing

NDC Package Code
0006-5073-01
Package Description
1 SYRINGE, GLASS in 1 CARTON / .7 mL in 1 SYRINGE, GLASS (0006-5073-99)
Product Code
0006-5073
11-Digit Billing Format
00006507301
Billing Unit
ML - Billing unit of "milliliter" is used when a product is measured by its liquid volume.
RxNorm Crosswalk

Clinical Specifications

Proprietary Name
Enflonsia
Non-Proprietary Name
Clesrovimab
Substance Name
Clesrovimab
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
Intramuscular - Administration within a muscle.
Active Ingredient(s)
CLESROVIMAB 150 mg/mL
Usage Information
ENFLONSIA is indicated for the prevention of respiratory syncytial virus (RSV) lower respiratory tract disease in neonates and infants who are born during or entering their first RSV season.

Regulatory & Marketing

Labeler Name
Merck Sharp & Dohme Llc
Product Type
Human Prescription Drug
FDA Application #
BLA761432
Marketing Category
BLA - A product marketed under an approved Biologic License Application.
Start Marketing Date
06-09-2025
Listing Expiration
12-31-2026
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.

Other Available Packages

The following commercial packages are registered under the same Product NDC (0006-5073). Click a package code to view its specific billing and regulatory data.

0006-5073-02
10 SYRINGE, GLASS in 1 CARTON / .7 mL in 1 SYRINGE, GLASS (0006-5073-99)

* 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 0006-5073-01 identifies a specific commercial package of 1 syringe, glass in 1 carton / .7 ml in 1 syringe, glass (0006-5073-99) of Enflonsia, a human prescription drug labeled by Merck Sharp & Dohme Llc. This injection, solution is formulated for intramuscular use and contains clesrovimab 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 Merck Sharp & Dohme Llc on June 09, 2025. The current certification is valid through December 31, 2026.

How is this Merck Sharp & Dohme Llc product billed for insurance claims?

For medical billing and reimbursement, this package follows the 11-digit CMS format: 00006507301. 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 (4-4-2)
0006-5073-01
11-Digit CMS (5-4-2)
00006-5073-01

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