Final answer:
In the context of CPT® code 69210 for earwax removal, impacted earwax interrupts conductive hearing. This impedes the transmission of sound waves through the auditory canal and middle ear, affecting hearing. Removal restores proper conduction of sound.
Step-by-step explanation:
The removal of impacted earwax, as coded by 69210 in the CPT® book, pertains to alleviating an obstruction in the external auditory canal. Impacted earwax can interrupt conductive hearing, which is the process that involves the transmission of sound waves from the external ear, through the ear canal, the eardrum, and the bones of the middle ear to the inner ear.
This type of conductive blockage can prevent sound from being adequately transferred, leading to a temporary reduction in hearing ability. The proper removal of impacted earwax can restore this conduction and improve hearing.