ICD-10 Code H15.1 – Episcleritis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H15.1 – Episcleritis
What it is
Episcleritis is inflammation of the episclera, the thin tissue between the conjunctiva and sclera. Use this code for a superficial, usually localized eye inflammation documented as episcleritis.
Clinical signs
Typical findings include eye redness, mild discomfort, and localized tenderness. Clinical features vary; refer to documentation for whether the condition is simple, nodular, or recurrent.
When to use this code
Use H15.1 when the provider documents episcleritis as the diagnosis, even if the note is based on clinical examination alone. Code it for unilateral or bilateral disease when laterality is not separately specified in the record. If the note only says red eye or ocular irritation, check documentation before assigning this code.
Do not use for
Do not use this code for scleritis, conjunctivitis, or nonspecific eye redness without a documented diagnosis. If another inflammatory eye disorder is named, code that condition instead.
Coding tip
Look for the exact term “episcleritis” in the assessment or impression before coding H15.1.