ICD-10 Code H16.261 – Vernal keratoconjunctivitis, with limbar and corneal involvement, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.261 – Vernal keratoconjunctivitis, with limbar and corneal involvement, right eye
What it is
This code identifies vernal keratoconjunctivitis affecting the right eye, with inflammation involving both the limbus and cornea. It is a chronic allergic eye condition that can cause significant ocular irritation.
Clinical signs
Typical findings include itching, redness, tearing, photophobia, and thick mucus discharge. Clinical features vary; refer to documentation for limbal and corneal involvement in the right eye.
When to use this code
Use H16.261 when the provider documents vernal keratoconjunctivitis in the right eye and specifically notes limbal and corneal involvement. Apply it when the record supports a unilateral diagnosis rather than bilateral or unspecified disease.
If the note only states “vernal conjunctivitis” or does not identify corneal or limbal involvement, check documentation before coding. Confirm the laterality and the exact anatomic extent.
Do not use for
Do not use this code for simple allergic conjunctivitis, unspecified conjunctivitis, or vernal keratoconjunctivitis without corneal and limbal involvement. Check documentation if the eye or laterality is not clearly stated.
Coding tip
Code only when the chart explicitly supports right-eye limbal and corneal involvement; otherwise, query for clarification.