CPT® Code 92568

Acoustic reflex threshold testing, identified by CPT® Code 92568, is a specialized auditory assessment that evaluates the response of the stapedius muscle and tensor tympani to loud sounds. This testing is crucial for understanding the functionality of the middle ear and the auditory pathway. When a loud sound is presented, the stapedius muscle contracts, which in turn causes the stapes bone to move. This movement is a protective mechanism that helps to reduce the transmission of loud sounds to the inner ear, thereby preventing potential damage to the auditory structures. The acoustic reflex threshold specifically measures the minimum intensity of sound that can trigger this reflex contraction of the stapedius muscle. The testing is typically conducted using the same equipment employed for tympanometry, where a loud sound is emitted, prompting the stapedius muscle to contract. This contraction alters the immittance of the middle ear, which is then recorded as a deflection on the testing device. The physician is responsible for reviewing and interpreting these results to assess the integrity of the auditory system and to identify any potential abnormalities in the reflex pathway.