ICD-10 Code H16.023 – Ring corneal ulcer, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.023 – Ring corneal ulcer, bilateral
What it is
This code identifies a ring-shaped corneal ulcer affecting both eyes. Use it when documentation clearly states bilateral corneal ulceration with a ring pattern.
Clinical signs
Findings may include corneal pain, redness, tearing, photophobia, and a visible ring-shaped ulcer or infiltrate. Clinical features vary; refer to documentation.
When to use this code
Use H16.023 when the provider documents ring corneal ulcer in both eyes, or when the record clearly supports bilateral involvement. Apply it for confirmed corneal ulceration with ring morphology, not for nonspecific keratitis alone.
Do not use for
Do not use this code for unilateral ring corneal ulcer, unspecified corneal ulcer, or corneal abrasion. Check documentation if the eye laterality or ulcer type is not clearly stated.
Coding tip
Verify both laterality and the “ring” descriptor before assigning H16.023.