ICD-10 Code H16.002 – Unspecified corneal ulcer, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.002 – Unspecified corneal ulcer, left eye
What it is
This code identifies a corneal ulcer in the left eye when the chart does not specify the cause or type. It indicates a defect or open lesion of the cornea needing clinical attention.
Clinical signs
Typical findings may include eye pain, redness, tearing, light sensitivity, and blurred vision. Clinical features vary; refer to documentation.
When to use this code
Use H16.002 when the provider documents a corneal ulcer of the left eye without further detail. It also fits when laterality is clear, but the etiology, depth, or infectious status is not stated. Check documentation if the record mentions a more specific corneal disorder.
Do not use for
Do not use this code for corneal abrasion, keratitis, or a corneal ulcer documented in another eye. If the cause or type is specified, code the more precise diagnosis instead.
Coding tip
Confirm left-eye laterality and avoid unspecified coding when the note gives a specific ulcer cause or corneal condition.