Labyrinthine fistula, unspecified ear

This code describes an abnormal connection or tract that forms between the inner ear (labyrinth) and an adjacent structure, allowing perilymphatic fluid to leak. This can lead to symptoms such as hearing loss, vertigo, and tinnitus due to disruption of inner ear pressure and function. The "unspecified ear" designation indicates that the laterality of the fistula is not documented.

Use this code when documentation clearly indicates the presence of a labyrinthine fistula, but the medical record does not specify whether it affects the right, left, or both ears. This diagnosis is often made following otologic examination, imaging studies (e.g., CT scan), or surgical exploration.

• Avoid using this code if the laterality of the labyrinthine fistula is documented; instead, choose a more specific code (H83.11 for right ear, H83.12 for left ear, H83.13 for bilateral).
• Ensure the documentation supports the presence of a fistula, not just general inner ear dysfunction.
• Consider coding any associated symptoms (e.g., vertigo, hearing loss) as secondary diagnoses if they are not integral to the fistula diagnosis.