Otosclerosis w oval window, nonobliterative, unsp ear

This code signifies a diagnosis of otosclerosis affecting the oval window, specifically the nonobliterative form. It indicates abnormal bone growth in the middle ear that impairs the movement of the stapes, leading to conductive hearing loss, without completely fusing the stapes to the oval window. The "unspecified ear" designation means the laterality of the condition is not documented.

Use this code when documentation confirms otosclerosis with involvement of the oval window, and the physician explicitly states it is nonobliterative. This code is appropriate when the medical record does not specify whether the condition affects the left, right, or both ears. Supporting documentation would include audiometry results showing conductive hearing loss and clinical findings consistent with otosclerosis.

• Avoid using this code if the documentation specifies laterality (e.g., right, left, bilateral); instead, select the more specific code.
• Distinguish between nonobliterative and obliterative forms of otosclerosis, as they have distinct codes.
• Ensure the documentation clearly indicates oval window involvement to differentiate from other forms of otosclerosis.