CPT® Code 69140

The procedure described by CPT® Code 69140 involves the excision of exostosis(es) from the external auditory canal (EAC). Exostoses are bony growths that develop within the EAC, leading to a gradual narrowing of the canal due to the deposition of bone on the canal walls. This condition can result in various auditory issues, including hearing loss or discomfort. During the procedure, the physician first conducts an otoscopic examination to identify the exostoses present in the EAC. Following this examination, an operating head is attached to the otoscope, allowing for the introduction of surgical instruments through the speculum. The surgical site is then cleansed with a disinfectant to minimize the risk of infection. A medially based canal skin flap is created and reflected towards the tympanic membrane, providing access to the bony growths. The exostoses are meticulously removed using specialized tools such as bone curettes and diamond burrs. After the excision, the previously created skin flap is repositioned to cover the surgical site, and the area is closed to promote healing. This procedure is distinct from CPT® Code 69145, which pertains to the removal of soft tissue lesions in the EAC, highlighting the specific focus on bony abnormalities in this coding description.