CPT® Code 90704

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The CPT® Code 90704 refers to the mumps virus vaccine, which is a live vaccine administered subcutaneously. Vaccines, unlike immune globulins that provide short-term, passive immunity, are designed to elicit an active immune response. This is achieved by introducing altered versions of specific viruses or bacteria into the body, prompting the immune system to produce its own antibodies. The immune system then retains a memory of these antibodies, allowing for a quicker and more effective response upon subsequent exposures to the same antigens. The mumps vaccine specifically contains an attenuated, or weakened, form of the mumps virus. This attenuation ensures that while the vaccine can stimulate the immune system to generate a protective response, it does not possess the virulence necessary to cause the disease itself. The administration of this vaccine is crucial in preventing mumps, a contagious viral infection that can lead to serious complications. The code 90704 is specifically designated for the mumps vaccine, distinguishing it from other related vaccines such as those for measles and rubella, which are reported under different codes. The live virus vaccines for measles, mumps, and rubella are all administered subcutaneously, ensuring effective delivery and immune response activation.