CPT® Code 86631

The CPT® Code 86631 refers to the laboratory test for antibodies to Chlamydia, a genus of bacteria responsible for various infections in humans. The most notable species within this genus is Chlamydia trachomatis, which is primarily known for causing sexually transmitted diseases (STDs). This particular infection often remains asymptomatic, meaning that individuals may not exhibit any noticeable symptoms. However, if left untreated, it can lead to severe complications, particularly in women, including irreversible damage to the reproductive system, which may result in infertility. In men, while the infection can cause symptoms such as burning and itching in the urethra, they are less likely to experience long-term reproductive issues. In addition to C. trachomatis, the Chlamydia genus includes C. pneumoniae, which is associated with respiratory infections such as pneumonia, bronchitis, rhinitis, and pharyngitis. Another species, C. psittaci, primarily affects birds but can be transmitted to humans through contact with infected birds, leading to flu-like symptoms. Testing for Chlamydia antibodies can be performed using various methods, including the indirect fluorescent antibody test and the enzyme-linked immunosorbent assay (ELISA). The CPT® Code 86631 is specifically designated for screening tests that detect antibodies for all species of Chlamydia and for tests that identify IgG antibodies. For tests that identify IgM antibodies, the CPT® Code 86632 should be used. It is important to note that each species and each immunoglobulin class (IgG, IgM) tested is reported separately, ensuring precise and accurate laboratory results.