CPT® Code 92588

Distortion product evoked otoacoustic emissions; comprehensive diagnostic evaluation (quantitative analysis of outer hair cell function by cochlear mapping, minimum of 12 frequencies), with interpretation and report

The CPT® Code 92588 refers to a comprehensive diagnostic evaluation of distortion product evoked otoacoustic emissions (DPEOAEs). This procedure is designed to assess the function of the outer hair cells in the cochlea, which are critical for hearing. Otoacoustic emissions are low-intensity sounds produced by the cochlea in response to auditory stimuli, reflecting the health and functionality of the hair cells. The evaluation involves a quantitative analysis that utilizes a minimum of 12 different frequencies, allowing for a detailed mapping of cochlear responses. This comprehensive approach is particularly beneficial for screening populations such as neonates, infants, or individuals with developmental disabilities, as it does not require any behavioral response from the patient. The procedure is performed by placing a microphone probe in the external ear canal, where it captures the emissions generated by the cochlea in response to sound stimuli. The results are then interpreted by a physician, who provides a detailed report of the findings, contributing to the overall understanding of the patient's auditory health.