H21.81
ICD-10-CMThis code represents a condition where the iris becomes flaccid and billows during intraocular surgery, particularly cataract extraction. This can lead to complications such as iris prolapse, miosis, and iris trauma. It is often associated with the use of alpha-1 adrenergic antagonists.
Assign this code when documentation explicitly states "floppy iris syndrome" or "intraoperative floppy iris syndrome (IFIS)." This diagnosis is typically made during or immediately following ophthalmic surgery, especially cataract surgery. Supporting documentation will often include operative reports detailing iris behavior.
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