Cholesteatoma of external ear, unspecified ear

This code describes a cholesteatoma originating in the external auditory canal. This is a benign, but locally destructive, keratinizing squamous epithelium that can erode bone and soft tissue within the external ear. It is distinct from middle ear cholesteatomas.

Use this code when documentation specifies a cholesteatoma located within the external ear canal, without further specification of laterality. This diagnosis is typically supported by otoscopic examination findings, imaging (e.g., CT scan), and sometimes biopsy results confirming the presence of squamous epithelium and keratin debris.

• Do not use this code for cholesteatomas of the middle ear or mastoid; those have distinct ICD-10-CM codes.
• If the laterality (right or left ear) is documented, use the more specific codes (H60.41, H60.42).
• Ensure documentation clearly distinguishes external ear cholesteatoma from other external ear conditions like otitis externa or cerumen impaction.