AMA CPT® Assistant - 2007 Issue 2 (February)

Medicine: Vaccines, Toxoids (February 2007)

February 2007 page 11b Coding Communication:Medicine: Vaccines, Toxoids Question Why do codes 90476-90749 use upper and lower case letters to describe the antigens in the code descriptors? AMA Comment In order to adequately identify and facilitate correct coding, the convention of using upper and lower case letters to distinguish between varying amounts of antigen components in related vaccine products is used. For example, in code 90702, the DT is used to reflect the increased diphtheria component for children younger than age 7, and in code 90718, Td is used to indicate the reduced antigen concentration of diphtheria for children...

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