ICD-10 Code H21.251 – Iridoschisis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.251 – Iridoschisis, right eye
What it is
Iridoschisis is a rare condition in which the iris stroma splits into layers. This code identifies the disorder in the right eye.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include a split or frayed iris appearance on examination, sometimes with loose anterior iris fibers.
When to use this code
Use H21.251 when the provider documents iridoschisis specifically in the right eye. Apply it for confirmed diagnoses from ophthalmic examination, consultation notes, or problem lists. If the record only says “iris abnormality” or does not specify laterality, check documentation.
Do not use for
Do not use this code for nonspecific iris lesions, trauma-related iris injury, or iridoschisis documented in the left eye or both eyes. Check documentation when laterality is unclear.
Coding tip
Code only when the provider names iridoschisis and confirms the right eye; laterality matters for accurate ICD-10-CM reporting.