ICD-10 Code H21.82 – Plateau iris syndrome (post-iridectomy) (postprocedural) (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.82 – Plateau iris syndrome (post-iridectomy) (postprocedural)
What it is
H21.82 identifies plateau iris syndrome after iridectomy or another procedure. It refers to persistent angle-closure risk caused by an anatomic iris configuration, even when the pupil block has been relieved.
Clinical signs
Findings may include a narrow or closed anterior chamber angle despite a patent iridectomy. Clinical features vary; refer to documentation for gonioscopic confirmation and any noted angle crowding or recurrent closure.
When to use this code
Use this code when the record specifically documents plateau iris syndrome in the post-iridectomy or postprocedural setting. It fits follow-up visits where the ophthalmologist identifies persistent angle-closure anatomy after prior intervention.
Do not assume it from glaucoma history alone. You need documentation linking the condition to the postprocedural plateau iris syndrome diagnosis.
Do not use for
Do not use H21.82 for routine glaucoma, generic narrow angles, or iridectomy status without plateau iris syndrome. Check documentation if the chart only mentions angle-closure concern.
Coding tip
Code this only when the provider states plateau iris syndrome and the postprocedural context; otherwise, query or use the documented eye condition.