IIS: HL7 Standard Code Set
Mapping CVX to Vaccine Groups

Email Updates‎

Subscribe to receive email updates about this page.

A variety of vaccines can be used to vaccinate against a specific disease in fulfillment of the Advisory Committee on Immunization Practices (ACIP) schedule. Multiple individual vaccines that can be used to vaccinate against a disease are grouped into a Vaccine Group (sometimes known as vaccine family), and in many cases these groups represent vaccines that vaccinate against a single disease. In a few cases they represent vaccines that vaccinate against more than one disease, but are grouped together because clinicians have thought of them as a unit.

CVX codes are codes that indicate the product used in a vaccination. MVX codes are codes that indicate the manufacturer of a vaccine. These codes are maintained by the Centers for Disease Control and Prevention, Immunization Information System Support Branch (IISSB) for use in HL7 data transmission.

The goal of the table is to support mapping of CVX to vaccine groups.

Note: The column formerly known as "Uncertain Formulation CVX" has been changed to "CVX for Vaccine Group". This is the code to use for identifying the vaccine group in HL7 messages for forecasting next dose due and for other cases where vaccine group needs to be identified.

Questions regarding this table should be directed to the IIS Technical Assistance Team(or use mailing address).

Page last reviewed: June 30, 2026