2024 ICD-10-CM Diagnosis Code H21.331

Parasitic cyst of iris, ciliary body or anterior chamber, right eye

  • H21.331 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Parastc cyst of iris, ciliary body or ant chamber, right eye
  • The 2024 edition of ICD-10-CM H21.331 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of H21.331 – other international versions of ICD-10 H21.331 may differ.

The following code(s) above H21.331 contain annotation back-references

 that may be applicable to H21.331:

  • H00-H59  Diseases of the eye and adnexa
  • H21  Other disorders of iris and ciliary body
  • H21.3  Cyst of iris, ciliary body and anterior chamber

Approximate Synonyms

  • Right parasitic ciliary body cyst
  • Right parasitic cyst of iris
  • Right parasitic iris cyst
  • Right parasitic iris cyst (eye condition)

ICD-10-CM H21.331 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 121 Acute major eye infections with cc/mcc
  • 122 Acute major eye infections without cc/mcc

Convert H21.331 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
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