ICD-10 Code H16.01 – Central corneal ulcer (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.01 – Central corneal ulcer
What it is
This code identifies an ulcer located in the central cornea, the clear front surface of the eye. Use it when documentation specifies a central corneal ulcer rather than a more general corneal lesion.
Clinical signs
Typical findings include a corneal epithelial defect with stromal involvement, pain, redness, tearing, and light sensitivity. Clinical features vary; refer to documentation.
When to use this code
Use H16.01 when the provider documents a central corneal ulcer by location. It is appropriate for ophthalmology notes, emergency visits, or follow-up care when the diagnosis is clearly stated. Check documentation if the record only says corneal ulcer without location.
Do not use for
Do not use this code for corneal abrasion, keratitis without ulceration, or ulcers in another corneal location. If the site is not central, choose the more specific documented code.
Coding tip
Verify the chart for the ulcer’s exact corneal location before assigning H16.01.