H21.309 Idiopathic cysts of iris, ciliary body or anterior chamber, unspecified 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-)

Applies from H21.3 Cyst of iris, ciliary body and anterior chamber

Excludes2 (not included here)

• miotic pupillary cyst (H21.27-)

Applies from H21.30 Idiopathic cysts of iris, ciliary body or anterior chamber

Applicable to

• Cyst of iris, ciliary body or anterior chamber NOS

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 364.60 Idiopathic cysts of iris, ciliary body, and anterior chamber (approximate)

Diagnosis Index entries for H21.309

• Cyst (colloid) (mucous) (simple) (retention) › iris

Nearby codes

• H21.3 Cyst of iris, ciliary body and anterior chamber
• H21.30 Idiopathic cysts of iris, ciliary body or anterior chamber
• H21.301 Idiopathic cysts of iris, ciliary body or anterior chamber, right eye
• H21.302 Idiopathic cysts of iris, ciliary body or anterior chamber, left eye
• H21.303 Idiopathic cysts of iris, ciliary body or anterior chamber, bilateral
• H21.309 Idiopathic cysts of iris, ciliary body or anterior chamber, unspecified eye (this code)
• H21.31 Exudative cysts of iris or anterior chamber
• H21.311 Exudative cysts of iris or anterior chamber, right eye
• H21.312 Exudative cysts of iris or anterior chamber, left eye
• H21.313 Exudative cysts of iris or anterior chamber, bilateral
• H21.319 Exudative cysts of iris or anterior chamber, unspecified eye