ICD-10 Code H21.502 – Unspecified adhesions of iris, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.502 – Unspecified adhesions of iris, left eye
What it is
This code identifies adhesion of the iris in the left eye when the type is not further specified. It indicates abnormal sticking of the iris to nearby structures.
Clinical signs
Clinical features vary; refer to documentation. Findings may include an abnormal iris attachment noted on eye examination, often described by the ophthalmologist.
When to use this code
Use this code when the provider documents adhesions of the iris in the left eye but does not specify the exact form. It is appropriate for clear laterality-specific documentation without a more detailed diagnosis. If the record names a different iris disorder, code that condition instead.
Do not use for
Do not use it for adhesions of the right eye, bilateral disease, or a more specific iris adhesion diagnosis. Check documentation if the chart only mentions prior surgery or another eye finding.
Coding tip
Confirm left-eye laterality and unspecified wording before assigning H21.502.