CPT® Code 86747

The CPT® Code 86747 refers to a laboratory test specifically designed to measure antibodies against parvovirus B19. Parvovirus B19 is known to cause a mild rash illness commonly referred to as Fifth disease or Erythema infectiosum. This condition is characterized by several symptoms, including fever, runny nose, and headache, which are often followed by a distinctive 'slapped cheek' rash on the face and a typically itchy, lace-like rash on the body. In some cases, adults and certain children may also experience joint pain and swelling as a result of the infection. The transmission of parvovirus B19 occurs primarily through respiratory droplets, and it can also be transmitted to an unborn baby through placental transfer, posing potential risks during pregnancy. The laboratory test for parvovirus B19 antibodies involves the collection of a blood sample, which is obtained through a procedure known as venipuncture. The serum from this blood sample is then analyzed using a semi-quantitative enzyme-linked immunosorbent assay (ELISA) to detect the presence of specific antibodies. A positive result for IgM antibodies indicates a current or recent infection, while a positive result for IgG antibodies suggests either a current or past infection with the virus. It is important to note that IgM antibodies may sometimes remain detectable for more than 12 months following the initial infection.