Labyrinthine fistula, left ear

This code signifies an abnormal connection or tract that develops between the inner ear (labyrinth) and another structure, specifically affecting the left ear. This defect can lead to perilymph leakage and disruption of inner ear function, often manifesting as hearing loss, vertigo, or tinnitus.

Use this code when documentation clearly indicates the presence of a labyrinthine fistula affecting the left ear. This condition is frequently a complication of chronic otitis media with cholesteatoma, trauma, or otologic surgery. Supporting documentation should include findings from otoscopic examination, audiometry, and potentially imaging studies like CT scans.

• Differentiate from other inner ear disorders; this code specifically identifies a fistula.
• Ensure laterality is clearly documented as left ear; separate codes exist for right and bilateral.
• Look for associated conditions like cholesteatoma (H71.-) or chronic otitis media (H66.-) which may require additional coding.