ICD-10 Code H91.02 – Ototoxic hearing loss, left ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H91.02 – Ototoxic hearing loss, left ear
What it is
This code identifies hearing loss in the left ear caused by exposure to an ototoxic substance. It is used when the record links the hearing loss to a medication, chemical, or other toxic exposure.
Clinical signs
Findings typically include decreased hearing in the left ear, often with a history of ototoxic exposure. Clinical features vary; refer to documentation for laterality and the causal agent.
When to use this code
Use H91.02 when the provider documents ototoxic hearing loss affecting the left ear and the cause is clearly identified as ototoxicity. This may follow medication use or another documented toxic exposure. Code the condition only when the left-sided hearing loss is specifically stated.
Do not use for
Do not use this code for unspecified hearing loss, right ear loss, or bilateral hearing loss. Check documentation if the record does not clearly connect the hearing loss to an ototoxic cause.
Coding tip
Verify both laterality and the ototoxic cause in the note before assigning H91.02.