ICD-10 Code H66.12 – Chronic tubotympanic suppurative otitis media, left ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H66.12 – Chronic tubotympanic suppurative otitis media, left ear
What it is
This code identifies chronic suppurative otitis media affecting the left middle ear with tubotympanic involvement. It indicates a long-standing ear infection with persistent or recurrent drainage, documented in the left ear.
Clinical signs
Typical findings include chronic ear discharge, a history of recurrent middle ear infection, and a perforated tympanic membrane. Hearing loss or ear fullness may be present; clinical features vary, so refer to documentation.
When to use this code
Use H66.12 when the record clearly documents chronic tubotympanic suppurative otitis media in the left ear. Choose it for ongoing or recurrent suppurative middle ear disease with left-sided laterality. If the note does not specify chronicity or laterality, check documentation.
Do not use for
Do not use this code for acute otitis media, nonsuppurative otitis media, or ear conditions limited to the external ear. If the provider documents a different ear or an unspecified site, code accordingly.
Coding tip
Verify both chronic suppurative status and left ear laterality before assigning H66.12.