ICD-10 Code H66.3X9 – Other chronic suppurative otitis media, unspecified ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H66.3X9 – Other chronic suppurative otitis media, unspecified ear
What it is
This code identifies chronic suppurative otitis media when the ear is not specified and the condition does not fit a more specific chronic otitis media category. It indicates a long-standing middle ear infection with drainage or persistent inflammation.
Clinical signs
Typical findings include chronic ear discharge, a history of recurrent infection, and evidence of middle ear disease. Clinical features vary; refer to documentation.
When to use this code
Use H66.3X9 when the record documents chronic suppurative otitis media but does not identify the right or left ear. It is also appropriate when the provider uses a nonspecific description such as chronic draining otitis media without laterality. Check documentation if another chronic otitis media code is supported.
Do not use for
Do not use this code for acute otitis media, serous otitis media, or nonsuppurative chronic otitis media. If the ear side is documented, use the laterality-specific code instead.
Coding tip
Verify laterality and whether the condition is truly suppurative before assigning H66.3X9.