Otosclerosis, unspecified

This code represents otosclerosis, a condition characterized by abnormal bone growth in the middle ear that can lead to progressive hearing loss. It specifically indicates that the type or location of the otosclerosis is not specified in the medical record.

This code is appropriate when documentation confirms a diagnosis of otosclerosis but lacks further detail regarding its specific form (e.g., otosclerosis involving the oval window, cochlear otosclerosis). It should be used when the physician's notes simply state "otosclerosis" without additional modifiers.

• Avoid using this code if more specific documentation is available; query the provider for clarification.
• Do not confuse with other causes of conductive or sensorineural hearing loss.
• Always sequence this code as a primary diagnosis if it is the reason for the encounter.