CPT® Code 87273

The CPT® Code 87273 refers to the detection of infectious agent antigens specifically for Herpes simplex virus type 2 (HSV-2) using an immunofluorescent technique. This procedure involves testing a blood sample to identify the presence of HSV-2 antigens, which are proteins associated with the virus. The immunofluorescent technique utilizes a direct fluorescent antibody (DFA) method, which is a laboratory technique that allows for the visualization of the antigen-antibody reaction under a fluorescence microscope. Herpes simplex virus is known to be transmitted through direct contact, and the initial infection often manifests as ulcerations on the skin or mucous membranes. After the primary infection, the virus can enter a latent phase, remaining dormant in the body and potentially reactivating due to various triggers such as other illnesses, infections, or stress. Individuals at higher risk for severe complications from HSV-2 include neonates and those with compromised immune systems, as they may develop infections affecting the eyes or central nervous system. It is important to note that there are two types of herpes simplex virus: type 1 (HSV-1), which primarily causes oral herpes, and type 2 (HSV-2), which is typically associated with genital herpes. The immunofluorescent antigen detection process involves applying a specific reagent to the blood specimen, followed by incubation to facilitate the antigen-antibody reaction. After washing the specimen to eliminate any unbound conjugate, it is prepared for examination under a fluorescence microscope, where positive results are indicated by the appearance of bright green or orange-yellow fluorescence, signifying the presence of HSV-2 antigens.