CPT® Code 90668

The CPT® Code 90668 refers to the influenza virus vaccine specifically formulated for pandemic situations. This vaccine is a split virus type, which means it is created using a method that involves breaking apart the virus particles to enhance the immune response without using live virus. The pandemic formulation is distinct from standard influenza vaccines, as it is designed to address new strains of the virus that can emerge during an influenza pandemic, when the population has little to no pre-existing immunity. The vaccine is administered via intramuscular injection, ensuring that it is delivered effectively into the muscle tissue for optimal absorption and immune response. The production of this vaccine involves several steps, including the cultivation of the virus in embryonated chicken eggs, inactivation of the virus with formaldehyde, concentration to increase the antigen content, and purification processes to ensure safety and efficacy. This vaccine is crucial in preventing widespread illness and mortality during a pandemic, as it helps to build immunity against the newly emerging strains of the influenza virus.