CPT® Code 92653

Auditory evoked potentials (AEP) are specialized neurodiagnostic tests that measure the brain's electrical responses to auditory stimuli, such as sounds produced by an acoustic pulse, brief tones, or short bursts of broadband clicks. These responses are essentially voltage fluctuations that occur in the brain following the presentation of sound, reflecting the auditory system's function. The primary purpose of conducting AEP testing is to evaluate the integrity and functionality of the auditory nerve, particularly in the context of potential disorders affecting the vestibulocochlear nerve or the brainstem. During the procedure, a high-level clicking sound is delivered to the ear being tested, and the resulting auditory brainstem response (ABR) is recorded using surface electrodes strategically placed on the patient's forehead and earlobes, or alternatively, on the forehead, nape of the neck, and either the shoulder or cheek. The test aims to identify specific waveforms generated by the auditory system; if certain waves are not detected, the sound stimulus intensity is increased until a complete ABR is achieved. Additional manipulations of the sound stimuli may be employed to ensure optimal responses are captured. The procedure is typically performed on both ears, allowing for a comparative analysis of the auditory responses. The findings from the AEP test are compiled into a comprehensive written report that includes interpretations and recommendations based on the observed results.