H21.2 - Degeneration of iris and ciliary body
H21.26 - Iris atrophy (essential) (progressive)
H21.261 - Iris atrophy (essential) (progressive), right eye
H21.262 - Iris atrophy (essential) (progressive), left eye
H21.263 - Iris atrophy (essential) (progressive), bilateral
H21.269 - Iris atrophy (essential) (progressive), unspecified eye