CPT® Code 86645

The CPT® Code 86645 refers to the laboratory test for the detection of antibodies to cytomegalovirus (CMV), specifically the immunoglobulin M (IgM) type. CMV is a member of the herpes virus family and is known to be transmitted through direct contact with infected body fluids, which can include saliva, urine, breast milk, and sexual contact. In healthy adults, CMV infection may present with symptoms similar to those of mononucleosis, such as fatigue, fever, and sore throat. However, the implications of CMV infection can be more severe in certain populations. For instance, if a mother contracts CMV during pregnancy, there is a risk of birth defects in the newborn, which can lead to long-term health issues. Additionally, individuals with weakened immune systems, such as those living with acquired immune deficiency syndrome (AIDS) or patients undergoing treatment for malignancies, are at an increased risk for serious complications associated with CMV. These complications can include chorioretinitis, gastrointestinal disorders, pneumonitis, and central nervous system diseases. The testing for IgM antibodies, as indicated by CPT® Code 86645, is crucial as it helps to identify recent or current infections, which is essential for timely diagnosis and management of the disease. The IgM antibodies are typically detected using the enzyme-linked immunosorbent assay (ELISA) method, which is a common laboratory technique for measuring the presence of specific antibodies in the blood.