ICD-10 Code H16.001 – Unspecified corneal ulcer, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.001 – Unspecified corneal ulcer, right eye
What it is
This code identifies a corneal ulcer in the right eye when the chart does not specify the cause or deeper details. It indicates a corneal epithelial defect with stromal involvement, but the documentation is nonspecific.
Clinical signs
Typical findings include eye pain, redness, tearing, photophobia, and decreased vision. Clinical features vary; refer to documentation for the exact appearance, location, and cause.
When to use this code
Use H16.001 when the provider documents a corneal ulcer of the right eye and does not identify whether it is infectious, traumatic, or otherwise specified. It is also appropriate when records confirm a corneal ulcer but do not provide enough detail for a more specific code. Check documentation for laterality and etiology.
Do not use for
Do not use this code if the ulcer is documented as left eye, bilateral, or due to a specific cause with a more precise code available. Do not use for superficial corneal abrasion or keratitis without an ulcer.
Coding tip
Verify laterality and look for a documented cause before assigning the unspecified code.