CPT® Code 87490

The CPT® Code 87490 refers to the detection of the infectious agent Chlamydia trachomatis through nucleic acid techniques, specifically utilizing a direct probe method. This procedure is essential for identifying infections caused by Chlamydia trachomatis, which is a common sexually transmitted disease (STD). The infection often remains asymptomatic, particularly in women, which can lead to severe complications such as irreversible damage to the reproductive system and infertility. In men, while symptoms such as burning and itching of the urethra may occur, they typically do not experience long-term reproductive issues. The nucleic acid detection method employed in this procedure can include rapid tests that are suitable for use in a physician's office, utilizing test kits designed for this purpose. Specimens for testing are collected using a swab from areas such as the cervix, male urethra, or even the eye. The methodology for the test can vary based on the manufacturer of the test kit, with some employing a nucleic acid hybridization technique. This involves using a single-stranded chemiluminescent DNA probe that is complementary to the ribosomal RNA of the Chlamydia organism. The process includes lysing cells to release nucleic acids, which then hybridize with the labeled DNA probe, allowing for detection through a luminometer. This code is part of a broader set of codes that includes amplified probe techniques and quantification methods, which are used when the presence of Chlamydia nucleic acids is suspected to be low or when assessing the severity of an infection.