ICD-10-CM > H00-H59 > H15-H22 > H21 > H21.4 H21.4 Pupillary membranes Non-Billable/Non-Specific Applicable To Iris bombéPupillary occlusionPupillary seclusion Type 1 Excludes congenital pupillary membranes (Q13.8) Codes H21.40Pupillary membranes, unspecified eyeH21.41Pupillary membranes, right eyeH21.42Pupillary membranes, left eyeH21.43Pupillary membranes, bilateral