ICD-10 Code H16.102 – Unspecified superficial keratitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.102 – Unspecified superficial keratitis, left eye
What it is
This code identifies superficial inflammation or irritation of the cornea in the left eye when the specific cause is not documented. Use it when the record says superficial keratitis but does not name a more specific type.
Clinical signs
Typical findings may include eye redness, pain or foreign-body sensation, tearing, and light sensitivity. Clinical features vary; refer to documentation, especially when laterality and cause are not clearly stated.
When to use this code
Use H16.102 when the provider documents unspecified superficial keratitis affecting the left eye and no more specific diagnosis is available. It is appropriate for corneal surface inflammation recorded without an identified organism, exposure, or other defined cause. Check documentation if the note is vague.
Do not use for
Do not use this code if the chart identifies a different keratitis type, corneal ulcer, or a more specific cause of corneal disease. Do not assign it for right eye or bilateral disease unless the documentation supports left eye only.
Coding tip
Verify laterality and whether the provider documented a specific corneal cause before selecting this unspecified code.