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