ICD-10 Code H16.113 – Macular keratitis, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.113 – Macular keratitis, bilateral
What it is
H16.113 identifies macular keratitis affecting both eyes. Use it when the record documents bilateral corneal inflammation with macular involvement, and the diagnosis is specifically stated.
Clinical signs
Clinical features vary; refer to documentation. Standard findings may include corneal inflammation, eye redness, pain, tearing, photophobia, and reduced visual clarity when the cornea is involved.
When to use this code
Use this code when the clinician documents macular keratitis in both eyes, or clearly states bilateral corneal involvement matching this diagnosis. It is appropriate for confirmed encounters, follow-up visits, or problem-list documentation when the condition remains active.
Do not use for
Do not use it for unilateral keratitis or for nonspecific corneal irritation without a documented diagnosis. Check documentation if the note describes another corneal disorder or does not confirm bilateral disease.
Coding tip
Confirm both laterality and the exact keratitis type in the provider note before assigning H16.113.