ICD-10 Code H21.241 – Degeneration of pupillary margin, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.241 – Degeneration of pupillary margin, right eye
What it is
H21.241 identifies degenerative change at the pupillary margin of the right iris. Use it when documentation specifically states degeneration affecting the right eye’s pupillary edge.
Clinical signs
Clinical features vary; refer to documentation. Findings may include visible iris margin change on exam or an ophthalmology note describing pupillary margin degeneration in the right eye.
When to use this code
Use this code when the provider documents degeneration of the pupillary margin in the right eye as the diagnosed condition. It may appear in ophthalmology assessments, follow-up visits, or problem lists when that specific right-eye finding is confirmed.
Do not use for
Do not use this code for nonspecific iris disorders, left-eye findings, or bilateral disease unless the record clearly supports the right eye. Check documentation if the note only says “iris abnormality” or “pupillary change.”
Coding tip
Always match laterality exactly; if the right eye is not stated, verify the documentation before assigning H21.241.