ICD-10 Code H16.013 – Central corneal ulcer, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.013 – Central corneal ulcer, bilateral
What it is
H16.013 identifies ulceration of the central cornea in both eyes. Use it when documentation states bilateral central corneal ulceration, not a peripheral lesion or a unilateral corneal ulcer.
Clinical signs
Typical findings include corneal epithelial defect with stromal involvement, eye pain, redness, tearing, photophobia, and blurred vision. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a central corneal ulcer affecting both eyes, or clearly states bilateral corneal ulceration with central location. It may also fit ophthalmology notes describing bilateral central corneal ulcer without another more specific diagnosis. Check documentation if the record does not specify laterality or location.
Do not use for
Do not use H16.013 for a unilateral corneal ulcer, peripheral corneal ulcer, or nonspecific keratitis. If the note describes a corneal abrasion or another corneal disorder, select the documented condition instead.
Coding tip
Confirm both laterality and central corneal location before assigning H16.013.