ICD-10 Code H80.11 – Otosclerosis involving oval window, obliterative, right ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H80.11 – Otosclerosis involving oval window, obliterative, right ear
What it is
H80.11 identifies otosclerosis in the right ear with oval window involvement and an obliterative pattern. It refers to abnormal bone remodeling around the stapes footplate that can limit sound transmission.
Clinical signs
Clinical features commonly include progressive conductive hearing loss and reduced hearing on the affected side. Tinnitus may occur; documentation should confirm the right ear and the obliterative oval window pattern.
When to use this code
Use this code when the provider documents right-sided otosclerosis specifically involving the oval window with obliteration. It is appropriate when the record distinguishes this from other otosclerosis types or from nonspecific conductive hearing loss. Check documentation if laterality or subtype is unclear.
Do not use for
Do not use H80.11 for otosclerosis without right-ear specification, or when the chart only says hearing loss. It is also wrong for non-otosclerotic middle ear disease; check documentation.
Coding tip
Confirm both laterality and the obliterative oval-window wording before assigning H80.11.