Common billing codes for ENFLONSIATM (clesrovimab-cfor)
Below is a list of codes that may be relevant for ENFLONSIA and its administration. The information provided here is compiled from sources believed to be accurate, but Merck makes no representation that it is accurate. Consult the relevant manual and/or other guidelines for a description of each code to determine the appropriateness of a particular code and for information on additional codes. This information is subject to change. Merck cautions that payer coding requirements vary and can frequently change, so it’s important to regularly check with each payer as to payer-specific requirements.
You are solely responsible for determining the appropriate codes and for any action you take in billing. The information provided here is not intended to be definitive or exhaustive, and is not intended to replace the guidance of a qualified professional advisor. Merck makes no warranties or guarantees, expressed or implied, concerning the accuracy or appropriateness of this information for your particular use given the frequent changes in public and private payer billing. The use of this information does not guarantee payment or that any payment received will cover your costs. Diagnosis codes should be selected only by a health care professional.
Billing codes for ENFLONSIA
These commonly-used codes may apply to private payer reimbursement claims.
| CPT codes for ENFLONSIA | Description |
|---|---|
| CPT Code for ENFLONSIA | |
| 90382 | Respiratory syncytial virus, monoclonal antibody, seasonal dose, 0.7 mL, for intramuscular use1 |
| Administration CPT Codes | |
| 96380 | Administration of respiratory syncytial virus, monoclonal antibody, seasonal dose by intramuscular injection, with counseling by physician or other qualified health professional2 |
| 96381 | Administration of respiratory syncytial virus, monoclonal antibody, seasonal dose by intramuscular injection.2 |
CPT, Current Procedural Terminology. CPT is a registered trademark of the American Medical Association.
| ICD-10-CM code3 | Description |
|---|---|
| Z29.11 | Encounter for prophylactic immunotherapy for respiratory syncytial virus (RSV)3 |
ICD-10-CM, International Classification of Diseases, Tenth Revision, Clinical Modification.
National drug codes (NDC) and CVX code
| Supplied packages | NDC unit of sale |
|---|---|
| 1 single-dose 105 mg/0.7 mL pre-filled syringe | 10-Digit: 0006-5073-01 11-Digit: 00006-5073-01 |
| 10 single-dose 105 mg/0.7 mL pre-filled syringes | 10-Digit: 0006-5073-02 11-Digit 00006-5073-02 |
| CVX Code1 | 332 |
Please note: The NDC above is the billable NDC that appears on the carton.
CVX, Clinical Vaccines Administered; NDC, National Drug Code
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References:
- Immunization Information Systems (IIS): CPT codes mapped to CVX codes. Centers for Disease Control and Prevention. Last reviewed November 26, 2025. January 6, 2025. https://www2a.cdc.gov/vaccines/iis/iisstandards/vaccines.asp?rpt=cpt
- American Medical Association. CPT® 2025 Professional Edition. 1st ed. American Medical Association; 2024:868–870.
- ICD-10-CM tabular list of diseases and injuries. Centers for Medicare & Medicaid Services. Last updated February 26, 2025. Accessed April 8, 2025. https://www.cms.gov/medicare/coding-billing/icd-10-codes