ICD-10 Code H16.029 – Ring corneal ulcer, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.029 – Ring corneal ulcer, unspecified eye
What it is
This code identifies a ring-shaped corneal ulcer affecting an unspecified eye. It refers to a corneal lesion documented as a ring ulcer, without laterality specified.
Clinical signs
Typical findings include a circular corneal ulceration with pain, redness, tearing, photophobia, or blurred vision. Clinical features vary; refer to documentation.
When to use this code
Use H16.029 when the provider documents a ring corneal ulcer and does not specify right or left eye. It also fits cases where the eye is noted as unspecified in the record. If laterality is documented, code to the appropriate eye-specific option instead.
Do not use for
Do not use this code for other corneal ulcers without a ring pattern. Also avoid it when the record clearly identifies the right or left eye.
Coding tip
Check the ophthalmology note for laterality before assigning H16.029.