CPT® Code 81513

Infectious disease, bacterial vaginosis, quantitative real-time amplification of RNA markers for Atopobium vaginae, Gardnerella vaginalis, and Lactobacillus species, utilizing vaginal-fluid specimens, algorithm reported as a positive or negative result for bacterial vaginosis

Bacterial vaginosis is a prevalent condition characterized by an imbalance in the normal bacterial flora of the vagina, leading to symptoms such as unusual discharge, odor, and irritation. It is recognized as the most common cause of vaginitis, which can result in significant health complications if left untreated. These complications include pelvic inflammatory disease, an increased susceptibility to sexually transmitted diseases (STDs), and adverse reproductive outcomes, such as spontaneous abortion and preterm delivery. The procedure associated with CPT® Code 81513 involves a quantitative real-time amplification test that utilizes vaginal fluid specimens to detect specific RNA markers associated with the bacteria Atopobium vaginae, Gardnerella vaginalis, and Lactobacillus species. This test employs a technique known as transcription-mediated amplification (TMA), which is an isothermal amplification method that operates at a constant temperature, eliminating the need for thermal cycling. TMA utilizes two enzymes—RNA polymerase and reverse transcriptase—to facilitate the amplification of RNA, resulting in a billion-fold increase in RNA quantity within a short time frame, typically within one hour. The test can also incorporate a chemiluminescent target-specific probe, allowing for real-time molecular detection of the pathogens without the need for washing steps or transferring samples from one tube to another. This efficient process enables the simultaneous detection of multiple pathogenic organisms, and the results are interpreted using a proprietary algorithm that provides a straightforward positive or negative result for bacterial vaginosis.