H21.349 Primary cyst of pars plana, 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-)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 364.63 Primary cyst of pars plana (approximate)

Nearby codes

• H21.339 Parasitic cyst of iris, ciliary body or anterior chamber, unspecified eye
• H21.34 Primary cyst of pars plana
• H21.341 Primary cyst of pars plana, right eye
• H21.342 Primary cyst of pars plana, left eye
• H21.343 Primary cyst of pars plana, bilateral
• H21.349 Primary cyst of pars plana, unspecified eye (this code)
• H21.35 Exudative cyst of pars plana
• H21.351 Exudative cyst of pars plana, right eye
• H21.352 Exudative cyst of pars plana, left eye
• H21.353 Exudative cyst of pars plana, bilateral
• H21.359 Exudative cyst of pars plana, unspecified eye