ICD-10 Code H71.90 – Unspecified cholesteatoma, unspecified ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H71.90 – Unspecified cholesteatoma, unspecified ear
What it is
This code identifies a cholesteatoma in the ear when the medical record does not specify which ear is affected. It refers to an abnormal skin growth in the middle ear or mastoid area that can damage nearby structures.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include chronic ear drainage, hearing loss, ear fullness, or a visible middle ear mass on examination or imaging.
When to use this code
Use H71.90 when the provider documents cholesteatoma but does not identify the right or left ear. It is also appropriate when the ear is noted as unspecified in the assessment, operative note, or final diagnosis. Check documentation if laterality is available elsewhere in the record.
Do not use for
Do not use this code if the record specifies the right or left ear; choose the laterality-specific code instead. Do not use it for ear discharge or hearing loss alone without a documented cholesteatoma.
Coding tip
Query for laterality before assigning H71.90 if the chart mentions cholesteatoma but the affected ear is unclear.