ICD-10 Code H15.042 – Scleritis with corneal involvement, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H15.042 – Scleritis with corneal involvement, left eye
What it is
This code identifies inflammation of the sclera in the left eye with extension to the cornea. Use it when the record specifically documents left-sided scleritis plus corneal involvement.
Clinical signs
Typical findings include a painful, red eye with scleral tenderness and evidence of corneal involvement. Clinical features vary; refer to documentation for the exact laterality and extent.
When to use this code
Use H15.042 when the clinician documents scleritis of the left eye and notes corneal involvement, such as keratitis or adjacent corneal inflammation. Code the diagnosis only when the record clearly supports both the scleral and corneal components.
Do not use for
Do not use this code for scleritis without corneal involvement, or for corneal disease alone. If laterality is not documented, or the note is unclear, check documentation.
Coding tip
Confirm both left eye laterality and corneal involvement in the same note before assigning H15.042.