ICD-10 Code H65.21 – Chronic serous otitis media, right ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H65.21 – Chronic serous otitis media, right ear
What it is
H65.21 identifies chronic serous otitis media affecting the right ear. It means persistent middle-ear fluid without acute infection, limited to the right side.
Clinical signs
Typical documentation includes middle-ear effusion, a sense of ear fullness, and reduced hearing. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents chronic serous otitis media in the right ear, including persistent effusion or glue ear on that side. It also fits follow-up visits when the diagnosis remains active and the right ear is specifically identified. Check documentation if laterality is unclear.
Do not use for
Do not use H65.21 for acute otitis media, otitis externa, or unspecified ear involvement. If the record does not confirm chronic serous disease or right-ear laterality, check documentation.
Coding tip
Always verify both chronicity and right-ear laterality before assigning H65.21.