CPT® Code 90477

The CPT® Code 90477 refers to the Adenovirus vaccine, specifically type 7, which is administered orally. Vaccines, unlike immune globulins that provide short-term, passive immunity, are designed to elicit an active, long-term immune response. This is achieved by introducing altered forms of specific viruses or bacteria into the body, prompting the immune system to produce its own antibodies. Once vaccinated, the body retains a memory of how to generate these antibodies, enabling it to respond more effectively upon subsequent exposure to the same antigen. Adenoviruses are known to cause a range of respiratory illnesses, including the common cold, croup, bronchitis, and pneumonia. Additionally, they can lead to other health issues such as conjunctivitis, cystitis, and gastroenteritis, depending on the specific serotype and the site of infection. The codes for adenovirus vaccines, including 90476 for type 4 and 90477 for type 7, are utilized solely to report the vaccine product administered, without any additional implications regarding the administration process or patient outcomes.