ICD-10 Code H83.13 – Labyrinthine fistula, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H83.13 – Labyrinthine fistula, bilateral
What it is
H83.13 identifies a bilateral labyrinthine fistula, meaning an abnormal opening or communication involving the inner ear on both sides. It is a rare ear condition that can affect balance and hearing.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include vertigo, disequilibrium, or hearing changes, especially when pressure or sound triggers symptoms. Diagnosis is usually supported by otologic evaluation and imaging when documented.
When to use this code
Use H83.13 when the provider documents a labyrinthine fistula affecting both ears. It fits records that clearly describe bilateral inner ear fistula, including operative, imaging, or specialist notes. If laterality is not stated, check documentation before assigning this code.
Do not use for
Do not use this code for unilateral labyrinthine fistula, unspecified laterality, or general vertigo without documented fistula. Do not assign it when the chart only notes ear disease or hearing loss without confirming the fistula.
Coding tip
Verify bilateral laterality in the provider note or procedure report before coding, because laterality drives the correct H83.1- selection.