ICD-10 Code H71.03 – Cholesteatoma of attic, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H71.03 – Cholesteatoma of attic, bilateral
What it is
H71.03 identifies cholesteatoma in the attic, or epitympanic space, of both ears. It describes a keratinizing cystic lesion that can erode nearby middle-ear structures.
Clinical signs
Typical findings include chronic ear drainage, conductive hearing loss, and retraction or debris in the attic region. Clinical features vary; refer to documentation.
When to use this code
Use H71.03 when the provider documents bilateral attic cholesteatoma, whether newly diagnosed or followed over time. You should code it only when the record clearly states both ears are involved. If laterality is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for cholesteatoma limited to one ear or for nonspecific middle-ear disease without documented attic involvement. Do not assume bilateral disease from a general cholesteatoma diagnosis.
Coding tip
Confirm both laterality and attic location in the assessment or operative note before coding.