Question: We have begun administering FluMist along with well checks and other immunizations. For the administration code of FluMist, denials are coming in that state "90473 cannot be billed with 90471 or +90472." Has anyone else had this issue yet? Mississippi Subscriber Answer: Codes 90471 (Immunization administration [includes percutaneous, intradermal, subcutaneous, or intramuscularinjections]; one vaccine [single or combina-tion vaccine/toxoid]) and 90473 (Immunization administration by intranasal or oral route; one vaccine [single or combination vaccine/toxoid]) are for initial immunization administration. You cannot report both together. "Do not report 90473 in conjunction with 90471," according to CPT's parenthetical instruction after 90473. You indicate that you are administering FluMist in addition to other immunizations. When giving intranasal and injectable vaccines, you should report the shots before the inhaled administration. For instance, you would code the administration of two vaccine injections plus FluMist with codes 90471, +90472 (... each additional vaccine [single or combination vaccine/toxoid] [List separately in addition to code for primary procedure]), and +90474 (... each additional vaccine [single or combination vaccine/toxoid] [List separately in addition to code for primary procedure]). Why: Pay attention: