Labyrinthine fistula, right ear

This code signifies an abnormal connection or opening between the inner ear (labyrinth) and the middle ear or mastoid, specifically located in the right ear. This condition can lead to symptoms such as vertigo, hearing loss, and nystagmus due to perilymph leakage or pressure changes within the inner ear.

Use this code when documentation clearly indicates a diagnosis of a labyrinthine fistula affecting the right ear. This often occurs following trauma, chronic otitis media with cholesteatoma, or otologic surgery. Supporting documentation should include findings from otoscopic examination, audiometry, and potentially imaging studies like CT scans.

• Ensure laterality is explicitly documented as "right ear" to support this specific code.
• Differentiate from labyrinthitis (H83.0-) or other inner ear disorders without a documented fistula.
• Code any underlying cause, such as cholesteatoma (H71.-), as a primary diagnosis if it led to the fistula.