ICD-10-CM > H00-H59 > H15-H22 > H21 > H21.2 > H21.22 H21.22 Degeneration of ciliary body Non-Billable/Non-Specific Codes H21.221Degeneration of ciliary body, right eyeH21.222Degeneration of ciliary body, left eyeH21.223Degeneration of ciliary body, bilateralH21.229Degeneration of ciliary body, unspecified eye