Cochlear otosclerosis, unspecified ear

This code represents a form of otosclerosis primarily affecting the cochlea, leading to sensorineural hearing loss. It involves abnormal bone growth within the inner ear, specifically around the cochlea, without specifying laterality.

Use this code when documentation indicates cochlear otosclerosis without specifying whether it affects the right, left, or both ears. This diagnosis is typically made based on audiometric findings consistent with sensorineural hearing loss and imaging studies (e.g., CT scan) showing cochlear involvement.

• Do not use this code if laterality (right, left, or bilateral) is documented; instead, select a more specific code.
• Ensure documentation clearly distinguishes cochlear otosclerosis from stapedial otosclerosis (H80.0-) or fenestral otosclerosis (H80.1-).
• Sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity.