ICD-10 Code H16.26 – Vernal keratoconjunctivitis, with limbar and corneal involvement (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.26 – Vernal keratoconjunctivitis, with limbar and corneal involvement
What it is
H16.26 identifies vernal keratoconjunctivitis when both the limbus and cornea are involved. Use it for this allergic eye condition when the record specifically documents limbal and corneal disease.
Clinical signs
Typical findings include itching, redness, tearing, and photophobia, with limbal inflammation and corneal involvement. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents vernal keratoconjunctivitis affecting the limbus and cornea. It is appropriate when the diagnosis names both areas or clearly describes corneal and limbal disease from vernal keratoconjunctivitis.
Check documentation if the note only says allergic conjunctivitis, keratitis, or vernal conjunctivitis without corneal and limbal involvement.
Do not use for
Do not use H16.26 for vernal keratoconjunctivitis limited to the conjunctiva or for other non-vernal eye inflammation. If the chart does not confirm limbal and corneal involvement, check documentation.
Coding tip
Code H16.26 only when both limbal and corneal involvement are clearly documented together with vernal keratoconjunctivitis.