ICD-10 Code H16.003 – Unspecified corneal ulcer, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.003 – Unspecified corneal ulcer, bilateral
What it is
H16.003 identifies a corneal ulcer affecting both eyes, but the chart does not specify the cause or type. Use it when documentation confirms bilateral corneal ulceration without further detail.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include corneal pain, redness, tearing, light sensitivity, and a visible corneal defect on examination.
When to use this code
Use this code when the provider documents bilateral corneal ulcer and does not identify whether it is infectious, traumatic, or another specific type. It also fits when both corneas are involved, but laterality-specific detail is limited. Check the note for any more specific diagnosis before assigning H16.003.
Do not use for
Do not use this code if the ulcer is documented in only one eye or if the cause is specified and a more precise code is available. Check documentation for corneal abrasion, keratitis, or other corneal disorders.
Coding tip
Always verify bilateral involvement and look for a more specific corneal ulcer code before defaulting to H16.003.