ICD-10 Code H66.3 – Other chronic suppurative otitis media (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H66.3 – Other chronic suppurative otitis media
What it is
H66.3 identifies chronic middle ear infection with persistent drainage through the ear. Use it when the record describes chronic suppurative otitis media and does not specify a more exact laterality or subtype.
Clinical signs
Typical findings include long-standing ear discharge, tympanic membrane perforation, and recurrent or persistent middle ear infection. Hearing loss may occur; clinical features vary, so refer to documentation.
When to use this code
Use this code when the provider documents chronic suppurative otitis media without a more specific ICD-10 option. It may apply in outpatient, specialty, or follow-up notes when the condition is ongoing and active. Check documentation for laterality and any more specific type before assigning H66.3.
Do not use for
Do not use H66.3 for acute otitis media, serous otitis media, or nonsuppurative chronic ear disease. If the note only says ear pain or infection without chronic suppuration, check documentation.
Coding tip
Confirm that the record supports chronic suppuration, not just a historical ear infection, before coding H66.3.