CPT® Code 90743

The CPT® Code 90743 refers to the Hepatitis B vaccine (HepB) specifically designed for adolescents, administered in a 2-dose schedule via intramuscular injection. Vaccines, unlike immune globulins that offer short-term, passive immunity, provide active and long-lasting immunity. This is achieved by introducing altered forms of specific viruses or bacteria into the recipient's immune system, prompting it to produce its own antibodies against these pathogens. The immune system retains the memory of how to generate these antibodies, ensuring protection against future exposures to the same antigens. The hepatitis B vaccine is crucial in preventing chronic liver disease, which can lead to severe health complications, including hospitalization and death. Additionally, it plays a significant role in reducing the risk of long-term consequences such as hepatocellular carcinoma, marking it as one of the pioneering cancer vaccines in clinical use. The vaccine can be derived from the blood plasma of asymptomatic carriers or produced through recombinant technology, where a plasmid containing the hepatitis gene is inserted into baker's yeast, followed by purification processes to isolate the yeast components. It is important to note that this code specifically reports the hepatitis B vaccine product for intramuscular use, while the actual injection procedure is reported separately. Other related codes include 90739 for adult dosages in a 2-dose or 4-dose schedule, 90740 for dialysis or immunosuppressed patients in a 3-dose schedule, 90744 for pediatric/adolescent dosages in a 3-dose schedule, and 90746 for adult 3-dose schedules, with 90747 covering dialysis or immunosuppressed patients in a 4-dose schedule.