ICD-10 Code H80.23 – Cochlear Otosclerosis, Bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H80.23 – Cochlear otosclerosis, bilateral
What it is
H80.23 identifies bilateral otosclerosis affecting the cochlea, the inner ear structure involved in hearing. Use it when documentation specifically states cochlear otosclerosis in both ears.
Clinical signs
Common findings include progressive hearing loss, often sensorineural or mixed, with bilateral involvement. Clinical features vary; refer to documentation for the exact hearing pattern and laterality.
When to use this code
Use this code when the record clearly documents cochlear otosclerosis in both ears. It may appear in audiology, otology, or ENT notes describing bilateral inner-ear otosclerotic disease. If the note only says otosclerosis without cochlear detail, check documentation.
Do not use for
Do not use H80.23 for unilateral cochlear otosclerosis or for other forms of otosclerosis without cochlear involvement. Do not assign it when the diagnosis is uncertain or not documented.
Coding tip
Confirm both the cochlear subtype and bilateral laterality in the provider’s wording before selecting H80.23.