ICD-10 Code B00.5 – Herpesviral Ocular Disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B00.5 – Herpesviral ocular disease
What it is
B00.5 identifies herpesvirus infection affecting the eye. Use it when documentation states ocular herpes, including herpetic involvement of the conjunctiva, cornea, or other eye structures.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include eye pain, redness, tearing, photophobia, blurred vision, or corneal lesions consistent with herpesviral eye disease.
When to use this code
Use B00.5 when the provider documents herpesviral disease of the eye or a herpes infection with ocular involvement. It may apply to keratitis, conjunctivitis, or other eye manifestations if the record clearly links them to herpesvirus. Check documentation if the site or virus type is unclear.
Do not use for
Do not use this code for non-herpetic eye infections or for a history of herpes without active ocular disease. If the note only says “eye irritation” or “viral conjunctivitis,” verify the diagnosis first.
Coding tip
Confirm that the provider documents herpesviral eye involvement, not just a general herpes diagnosis.