ICD-10 Code H80.22 – Cochlear otosclerosis, left ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H80.22 – Cochlear otosclerosis, left ear
What it is
This code identifies otosclerosis affecting the cochlea in the left ear. It is used when the condition is documented as involving the inner ear rather than only the stapes.
Clinical signs
Clinical features vary; refer to documentation. Patients may have hearing loss, often sensorineural or mixed, and audiology may support cochlear involvement.
When to use this code
Use H80.22 when the provider specifically documents cochlear otosclerosis in the left ear. It is appropriate when the record distinguishes left-sided cochlear disease from other forms of otosclerosis. Check documentation if laterality or site is unclear.
Do not use for
Do not use this code for otosclerosis without cochlear involvement, or when the right ear or bilateral disease is documented instead. If the chart only says “otosclerosis,” check documentation.
Coding tip
Match the code to both site and laterality; if either is missing, query the provider before coding.