ICD-10 Code B00.51 – Herpesviral iridocyclitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B00.51 – Herpesviral iridocyclitis
What it is
B00.51 identifies iridocyclitis caused by herpesvirus infection. Use it for inflammation of the iris and ciliary body when the record links the eye disease to herpes simplex or another herpesviral cause.
Clinical signs
Typical findings include a painful red eye, photophobia, blurred vision, and anterior chamber inflammation. Clinical features vary; refer to documentation for the specific herpesviral diagnosis and laterality if recorded.
When to use this code
Use this code when the provider documents herpesviral iridocyclitis, herpetic anterior uveitis, or similar wording with a clear viral cause. It also fits follow-up visits for the same documented condition if the diagnosis remains active. Check documentation if the note only says uveitis without a herpes link.
Do not use for
Do not use B00.51 for nonspecific iridocyclitis, other uveitis causes, or conjunctivitis alone. If the chart does not identify herpesvirus involvement, choose a different code or check documentation.
Coding tip
Verify that the provider explicitly connects the eye inflammation to herpesvirus before assigning B00.51.