ICD-10 Code H16.201 – Unspecified keratoconjunctivitis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.201 – Unspecified keratoconjunctivitis, right eye
What it is
This code identifies keratoconjunctivitis affecting the right eye when the provider does not specify the exact type. Use it for inflammation involving both the cornea and conjunctiva on the right side.
Clinical signs
Clinical features may include red eye, irritation, tearing, foreign-body sensation, photophobia, or blurred vision. Clinical features vary; refer to documentation.
When to use this code
Use H16.201 when the record clearly states keratoconjunctivitis and identifies the right eye, but does not name a specific subtype. It also fits when the documentation supports corneal and conjunctival inflammation without further detail. If the note names a specific cause or type, code that condition instead.
Do not use for
Do not use this code for conjunctivitis alone, keratitis alone, or bilateral disease. If the documentation specifies another keratoconjunctivitis type, check documentation and code that more specific diagnosis.
Coding tip
Always confirm laterality and whether the provider documented an unspecified type before assigning H16.201.