ICD-10-CM 2027
ICD-10 code for iris syndrome floppy
From the official ICD-10-CM alphabetic index entry “Floppy › iris syndrome (intraoperative) (IFIS)”. Page updated September 29, 2026.
About coding iris syndrome floppy
The ICD-10-CM code for iris syndrome floppy is H21.81 (Floppy iris syndrome).
Within H21.8 (other specified disorders of iris and ciliary body), H21.81 is specifically for Floppy iris syndrome. Related codes cover Plateau iris syndrome (post-iridectomy) (postprocedural) (H21.82) and other specified disorders of iris and ciliary body (H21.89).
Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about iris syndrome floppy ICD-10 codes
What is the ICD-10 code for iris syndrome floppy?
- H21.81 — Floppy iris syndrome.
Is H21.81 billable?
- Yes. H21.81 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H21.81 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H21.81 as a principal diagnosis.
Is H21.81 a CC or MCC?
- No. H21.81 is neither a CC nor an MCC under MS-DRG v44.0.