CPT® Code 90473

The CPT® Code 90473 refers to the administration of an immunization via the intranasal or oral route, specifically for a single vaccine or a combination vaccine/toxoid. This procedure is applicable to patients who are over the age of 18, and it can be performed with or without a face-to-face encounter with a physician or other healthcare professional. Additionally, this code is relevant for administering a vaccine or toxoid to patients aged 18 or younger, even in the absence of face-to-face counseling by a healthcare provider. It is important to note that when multiple vaccines or toxoids are administered during the same encounter, the first vaccine/toxoid is coded with 90473, while any additional vaccines or toxoids given in that encounter should be coded with 90474. This coding structure ensures accurate billing and documentation for immunization services provided to patients.