ICD-10 Code H21.533 – Iridodialysis, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.533 – Iridodialysis, bilateral
What it is
Iridodialysis is a separation of the iris from its attachment at the ciliary body. This code specifies that the condition affects both eyes.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include a visible iris defect, pupil distortion, glare, or monocular diplopia after trauma.
When to use this code
Use this code when the record clearly states bilateral iridodialysis. It is appropriate after documented eye trauma, surgery, or examination findings showing iris root separation in both eyes. Check documentation if laterality is not explicit.
Do not use for
Do not use this code for unilateral iridodialysis or for nonspecific iris injury without documented detachment. If the note only says ocular trauma, check documentation.
Coding tip
Confirm bilateral involvement in the assessment, procedure note, or ophthalmology exam before assigning H21.533.