ICD-10 Code H80.2 – Cochlear Otosclerosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H80.2 – Cochlear otosclerosis
What it is
H80.2 identifies otosclerosis involving the cochlea, the inner ear structure needed for hearing. Use it when documentation specifically names cochlear otosclerosis or indicates sensorineural involvement linked to otosclerosis.
Clinical signs
Clinical features may include progressive hearing loss and findings consistent with otosclerosis affecting the inner ear. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents cochlear otosclerosis, especially in records describing otosclerotic disease with cochlear involvement. It may also apply when the diagnosis is stated as otosclerosis with sensorineural hearing loss due to cochlear disease. Check documentation if the note only says otosclerosis without site detail.
Do not use for
Do not use H80.2 for conductive otosclerosis limited to the stapes or for nonspecific hearing loss without documented cochlear involvement. If the record is unclear, check documentation.
Coding tip
Code only when the chart clearly supports cochlear involvement; otherwise, query for the specific otosclerosis site.