ICD-10 Code H21.53 – Iridodialysis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.53 – Iridodialysis
What it is
Iridodialysis is a separation of the iris from its attachment at the ciliary body. Use this code when documentation identifies this traumatic or structural iris disinsertion.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include a visible iris defect, abnormal pupil shape, or symptoms such as glare and monocular diplopia after eye trauma.
When to use this code
Use H21.53 when the provider documents iridodialysis in the affected eye and no more specific code is given. It may appear after blunt ocular trauma, surgery, or exam findings confirming iris root separation. Check documentation for laterality if required by the record.
Do not use for
Do not use this code for simple iris tears, hyphema, or other anterior segment injuries without documented iridodialysis. If the record only says “eye trauma,” code the documented injury instead.
Coding tip
Confirm that the note specifically states iridodialysis, and capture any laterality or associated injury from the chart.