Clinical Vaccines Administered (CVX) code

Clinical Vaccines Administered (CVX) code: Clinical Vaccines Administered (CVX) code is a numeric string, which represents the type of product used in an immunization. These codes are maintained by the Centers for Disease Control and Prevention, Immunization Information System Support Branch (IISSB) for use in HL7 data transmission. Every immunization that used a given type of product will have the
same CVX, regardless of who received it. Typically, there are a number of factors that determine which vaccine will have the same or a different CVX code the formulation, the concentration, the manufacturing process (egg culture vs. cell culture), and the route of administration.