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H21.359

H21.359: Exudative cyst of pars plana, unspecified eye

Billable / specific codeICD-10-CMunspecified

H21.359 is a billable, specific ICD-10-CM code for exudative cyst of pars plana, unspecified eye. It is valid for submission on a claim.

Check H21.359 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above H21.359

Not part of this code, but both may be coded when both are present.

Written on H21.3: Cyst of iris, ciliary body and anterior chamber

  • miotic pupillary cyst (H21.27-)

Written on H21: Other disorders of iris and ciliary body

  • sympathetic uveitis (H44.1-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

H21.359 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
  • A57637Billing and Coding: Visual Field Examination

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under H21.35

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.