CPT® Code 86727

The CPT® Code 86727 refers to a laboratory test specifically designed to detect antibodies against the lymphocytic choriomeningitis virus (LCMV) in blood and/or cerebrospinal fluid (CSF). LCMV is a virus belonging to the arenaviridae family and is primarily transmitted to humans through contact with the excretions of infected rodents, particularly house mice and potentially pet rodents like hamsters. The transmission occurs when individuals come into contact with fresh urine, droppings, saliva, or nesting materials of these rodents, with the virus entering the human body through broken skin, mucous membranes, or bites. It is important to note that LCMV is not transmitted from person to person; however, it can be passed to an unborn child through placental transfer during pregnancy. The clinical presentation of LCMV infection typically follows a biphasic pattern. The initial phase is characterized by symptoms such as fever, malaise, decreased appetite, headache, muscle pain, nausea, and vomiting. Following this, the second phase may involve central nervous system (CNS) symptoms, which can include fever, stiff neck, headache, drowsiness, confusion, and sensory-motor abnormalities. Importantly, the illness does not progress to a chronic state, and most patients recover fully once the virus is cleared from their system. A positive result from the LCMV antibody test indicates either a current or past infection. The testing process involves obtaining a blood sample through venipuncture, which is reported separately, and a CSF sample through a lumbar puncture, also reported separately. The laboratory tests for the presence of IgG and IgM antibodies using a semi-quantitative indirect fluorescent antibody method.