ICD-10-CM > H00-H59 > H15-H22 > H21 > H21.8 H21.8 Other specified disorders of iris and ciliary body Non-Billable/Non-Specific Codes H21.81Floppy iris syndromeH21.82Plateau iris syndrome (post-iridectomy) (postprocedural)H21.89Other specified disorders of iris and ciliary body