H21.81 Floppy iris syndrome

Billable ICD-10-CM code, FY2026.

Applicable to

• Intraoperative floppy iris syndrome (IFIS)

Use additional code

• code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Applies from H21 Other disorders of iris and ciliary body

Excludes2 (not included here)

• sympathetic uveitis (H44.1-)

MS-DRG index

Defines the logic of DRG(s) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 364.81 Floppy iris syndrome

Code annotations containing back-references to H21.81

Back-references to H21.81

• Type 2 Excludes: T81 Complications of procedures, not elsewhere classified ("floppy iris syndrome (IFIS) (intraoperative) H21.81")

Diagnosis Index entries for H21.81

• Floppy › iris syndrome (intraoperative) (IFIS)
• Syndrome › floppy › iris (intraoeprative) (IFIS)

Nearby codes

• H21.561 Pupillary abnormality, right eye
• H21.562 Pupillary abnormality, left eye
• H21.563 Pupillary abnormality, bilateral
• H21.569 Pupillary abnormality, unspecified eye
• H21.8 Other specified disorders of iris and ciliary body
• H21.81 Floppy iris syndrome (this code)
• H21.82 Plateau iris syndrome (post-iridectomy) (postprocedural)
• H21.89 Other specified disorders of iris and ciliary body
• H21.9 Unspecified disorder of iris and ciliary body