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H21.9

H21.9: Unspecified disorder of iris and ciliary body

Billable / specific codeICD-10-CM

H21.9 is a billable, specific ICD-10-CM code for unspecified disorder of iris and ciliary body. It is valid for submission on a claim.

Check H21.9 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above H21.9

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

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

H21.9 is named in 6 Medicare coverage policies: 6 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56453Billing and Coding: Cataract Extraction
  • A56544Billing and Coding: Cataract Extraction
  • A57068Billing and Coding: Ocular Photography - External
  • A57071Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)

Alphabetic index entries that lead here

  • Disease, diseased›aqueous(chamber)
  • Disease, diseased›ciliary body
  • Disease, diseased›iris
  • Disease, diseased›uveal tract(anterior)
  • Disorder›iris
  • Disease, diseased›anterior›chamber
  • Disease, diseased›eye›anterior chamber
  • Paralysis, paralytic›muscle, muscular NEC›iris sphincter

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under H21

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.