ICD-10 Code H21.239 – Degeneration of iris (pigmentary), unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.239 – Degeneration of iris (pigmentary), unspecified eye
What it is
This code identifies pigmentary degeneration of the iris when the affected eye is not specified. It indicates a documented iris pigment change or degeneration without laterality detail.
Clinical signs
Clinical features vary; refer to documentation. Findings may include visible iris pigment changes noted on eye examination, but the record should support the diagnosis rather than appearance alone.
When to use this code
Use H21.239 when the provider documents pigmentary degeneration of the iris and does not specify right or left eye. It is appropriate for outpatient, specialty, or consult notes where laterality is missing. If the record names another iris disorder, code that condition instead.
Do not use for
Do not use this code for unspecified pigment changes without a documented diagnosis of iris degeneration. If the note identifies the eye as right or left, choose the laterality-specific code instead.
Coding tip
Check the ophthalmology note for laterality and exact terminology before assigning H21.239.