ICD-10 Code H66.3X – Other chronic suppurative otitis media (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H66.3X – Other chronic suppurative otitis media
What it is
This code identifies a chronic middle ear infection with ongoing pus drainage that is not otherwise specified. Use it when the record describes chronic suppurative otitis media, but not a more specific subtype.
Clinical signs
Typical findings include persistent or recurrent ear discharge, hearing loss, and evidence of chronic middle ear infection. Clinical features vary; refer to documentation.
When to use this code
Use H66.3X when the provider documents chronic suppurative otitis media and does not name a more specific laterality or complication. It also fits cases described as chronic draining ear infection when the diagnosis is clearly established. Check documentation if the chart is vague.
Do not use for
Do not use this code for acute otitis media, otitis externa, or nonsuppurative chronic ear disease. If the note specifies a different chronic otitis media type, code that condition instead.
Coding tip
Look for the provider’s exact wording and any laterality or complication details before selecting H66.3X.