HL7 Terminology (THO)
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HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 7.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

Vaccine Administered Code Set (CVX) Metadata Record

Metadata Record Information Version 20251031
Maintained By HL7 Terminology Services Management Group (TSMG)
Last Updated Date 31 October 2025
Responsible Organizations U.S. Centers for Disease Control and Prevention (CDC) Roles
  • Code System Owner
  • Code System Maintainer (Steward)
  • Code System Publisher
Website https://www.cdc.gov/
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Code System Names Formal name Vaccine Administered Code Set (CVX)
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Code System Technical Identifiers Identification Record
TSMG-endorsed URI http://hl7.org/fhir/sid/cvx
TSMG-endorsed OID 2.16.840.1.113883.12.292
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Description
The CDC's National Center of Immunization and Respiratory Diseases (NCIRD - see [https://www.cdc.gov/ncird/](https://www.cdc.gov/ncird/)) developed and maintains the CVX (vaccine administered) code set. It includes both active and inactive vaccines available in the US. CVX codes for inactive vaccines allow transmission of historical immunization records. When a MVX (manufacturer) code is paired with a CVX (vaccine administered) code, the specific trade named vaccine may be indicated. These codes should be used for immunization messages using either HL7 Version 2.3.1 or HL7 Version 2.5.1. CVX is the underlying Master Code System for V2 table 0292 (Vaccines Administered). The machine readable name for CVX in PHIN VADS is PH_VaccinesAdministeredCVX_CDC_NIP. The version of the CVX code set for certification can be found on the archive page:[https://www2a.cdc.gov/vaccines/iis/iisstandards/mu3versioned_codes.asp](https://www2a.cdc.gov/vaccines/iis/iisstandards/mu3versioned_codes.asp) The Status column indicates if the vaccine is currently available in the United States. * Active: A currently available administrable vaccine * Inactive: An administrable vaccine formulation that is no longer available for patient administration, but can be found in historical patient records OR A historical record of a vaccine administered where the exact formulation is unknown * Pending: A vaccine that is expected to become active in the future * Non-US: A vaccine that available outside the US only * Never Active: A vaccine that was never available and is not in the pipeline of new vaccines The Last Updated column indicates the last time this particular vaccine code was updated in this table. Questions regarding this table should be directed to the IIS Technical Assistance Team via iisinfo@cdc.gov (or use mailing address via [https://www2a.cdc.gov/vaccines/iis/iisstandards/vaccines.asp?rpt=cvx#addr](https://www2a.cdc.gov/vaccines/iis/iisstandards/vaccines.asp?rpt=cvx#addr)) HL7 Implementers should note that 'Status' IS NOT CONCEPT STATUS as all codes are ACTIVE in this code system. The current code system is available via [https://www2a.cdc.gov/vaccines/iis/iisstandards/vaccines.asp?rpt=cvx](https://www2a.cdc.gov/vaccines/iis/iisstandards/vaccines.asp?rpt=cvx)
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Code System Copyright, Intellectual Property and Licensing Copyright Statement
Most of the information on the CDC and ATSDR websites is not subject to copyright, is in the public domain, and may be freely used or reproduced without obtaining copyright permission. For information and exceptions regarding use of CDC material please see [https://www.cdc.gov/other/agencymaterials.html](https://www.cdc.gov/other/agencymaterials.html)
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