ICD-10-CM > H00-H59 > H15-H22 > H21 > H21.2 > H21.23 H21.23 Degeneration of iris (pigmentary) Non-Billable/Non-Specific Applicable To Translucency of iris Codes H21.231Degeneration of iris (pigmentary), right eyeH21.232Degeneration of iris (pigmentary), left eyeH21.233Degeneration of iris (pigmentary), bilateralH21.239Degeneration of iris (pigmentary), unspecified eye