ICD-10 Code H16.213 – Exposure keratoconjunctivitis, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.213 – Exposure keratoconjunctivitis, bilateral
What it is
H16.213 identifies exposure keratoconjunctivitis affecting both eyes. It means the cornea and conjunctiva are irritated or damaged because the eyes do not close or stay protected well enough.
Clinical signs
Typical findings include redness, eye irritation, tearing, foreign-body sensation, and surface dryness. Clinical features vary; refer to documentation for bilateral corneal exposure or incomplete eyelid closure.
When to use this code
Use this code when the record clearly documents exposure keratoconjunctivitis in both eyes. It is appropriate when the condition results from lagophthalmos, facial nerve palsy, proptosis, or another cause of inadequate eye protection.
Code it when the provider links the bilateral corneal and conjunctival irritation to exposure rather than to infection or an allergic process. Check documentation if the note only says “dry eyes” or “keratitis” without exposure.
Do not use for
Do not use H16.213 for unilateral exposure keratoconjunctivitis or for nonspecific conjunctivitis without corneal exposure. Do not assign it when the chart does not document both eyes or the exposure cause.
Coding tip
Confirm that the provider documents bilateral exposure and the underlying reason for poor eyelid closure before selecting H16.213.