CPT® Code 87498

Infectious agent detection by nucleic acid (DNA or RNA); enterovirus, amplified probe technique, includes reverse transcription when performed

The CPT® Code 87498 refers to the detection of infectious agents, specifically enteroviruses, through nucleic acid testing techniques. Enteroviruses are a group of viruses that primarily inhabit the intestinal tract and can lead to a variety of disease symptoms, ranging from mild respiratory illness to more severe conditions. The method of nucleic acid detection serves as a valuable diagnostic tool, offering an alternative to traditional culturing methods, which can be time-consuming and less sensitive. This technique allows for the identification of much lower concentrations of the infectious agent, sometimes even detecting a single organism. The process involves the extraction of the virus's nucleic acid, either DNA or RNA, from the sample. This is achieved through a method known as nucleic acid hybridization, where a laboratory-prepared probe—composed of complementary strands of nucleic acid—is utilized. These probes are often labeled with chemical fluorescence to facilitate the identification of the target nucleic acid. The binding of the probe to the target nucleic acid forms stable complexes, enabling the detection of the infectious agent. The amplified probe technique enhances sensitivity and specificity, utilizing methods such as reverse transcription polymerase chain reaction (RT-PCR) to replicate specific sequences within the nucleic acid. This enzymatic replication allows for exponential amplification of the target nucleic acid, significantly increasing the likelihood of detection. Additionally, amplification primers, which are short strands of nucleic acid complementary to the target region, are employed to ensure accurate binding and replication, further aiding in the identification of the enterovirus.