H21.261 Iris atrophy (essential) (progressive), right eye

Billable ICD-10-CM code, FY2026.

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)

• 364.51 Essential or progressive iris atrophy (approximate)

Nearby codes

• H21.251 Iridoschisis, right eye
• H21.252 Iridoschisis, left eye
• H21.253 Iridoschisis, bilateral
• H21.259 Iridoschisis, unspecified eye
• H21.26 Iris atrophy (essential) (progressive)
• H21.261 Iris atrophy (essential) (progressive), right eye (this code)
• H21.262 Iris atrophy (essential) (progressive), left eye
• H21.263 Iris atrophy (essential) (progressive), bilateral
• H21.269 Iris atrophy (essential) (progressive), unspecified eye
• H21.27 Miotic pupillary cyst
• H21.271 Miotic pupillary cyst, right eye