H21.26 Iris atrophy (essential) (progressive)Non-billable header with 4 child codes.
H21.261 Iris atrophy (essential) (progressive), right eyeH21.262 Iris atrophy (essential) (progressive), left eyeH21.263 Iris atrophy (essential) (progressive), bilateralH21.269 Iris atrophy (essential) (progressive), unspecified eyeH21.25 IridoschisisH21.251 Iridoschisis, right eyeH21.252 Iridoschisis, left eyeH21.253 Iridoschisis, bilateralH21.259 Iridoschisis, unspecified eyeH21.26 Iris atrophy (essential) (progressive) (this code)H21.261 Iris atrophy (essential) (progressive), right eyeH21.262 Iris atrophy (essential) (progressive), left eyeH21.263 Iris atrophy (essential) (progressive), bilateralH21.269 Iris atrophy (essential) (progressive), unspecified eyeH21.27 Miotic pupillary cyst