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  6. 2024 ICD-10-CM Code H21.3
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code H21.3

Cyst of iris, ciliary body and anterior chamber

ICD-10-CM Code:
H21.3
ICD-10 Code for:
Cyst of iris, ciliary body and anterior chamber
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the eye and adnexa
    (H00–H59)
    • Disorders of sclera, cornea, iris and ciliary body
      (H15-H22)
      • Other disorders of iris and ciliary body
        (H21)

H21.3 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of cyst of iris, ciliary body and anterior chamber. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Cyst of iris, ciliary body and anterior chamber

Non-specific codes like H21.3 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for cyst of iris, ciliary body and anterior chamber:

  • H21.30 for Idiopathic cysts of iris, ciliary body or anterior chamber - NON-BILLABLE CODE

  • Use H21.301 for Idiopathic cysts of iris, ciliary body or anterior chamber, right eye - BILLABLE CODE

  • Use H21.302 for Idiopathic cysts of iris, ciliary body or anterior chamber, left eye - BILLABLE CODE

  • Use H21.303 for Idiopathic cysts of iris, ciliary body or anterior chamber, bilateral - BILLABLE CODE

  • Use H21.309 for Idiopathic cysts of iris, ciliary body or anterior chamber, unspecified eye - BILLABLE CODE

  • H21.31 for Exudative cysts of iris or anterior chamber - NON-BILLABLE CODE

  • Use H21.311 for Exudative cysts of iris or anterior chamber, right eye - BILLABLE CODE

  • Use H21.312 for Exudative cysts of iris or anterior chamber, left eye - BILLABLE CODE

  • Use H21.313 for Exudative cysts of iris or anterior chamber, bilateral - BILLABLE CODE

  • Use H21.319 for Exudative cysts of iris or anterior chamber, unspecified eye - BILLABLE CODE

  • H21.32 for Implantation cysts of iris, ciliary body or anterior chamber - NON-BILLABLE CODE

  • Use H21.321 for Implantation cysts of iris, ciliary body or anterior chamber, right eye - BILLABLE CODE

  • Use H21.322 for Implantation cysts of iris, ciliary body or anterior chamber, left eye - BILLABLE CODE

  • Use H21.323 for Implantation cysts of iris, ciliary body or anterior chamber, bilateral - BILLABLE CODE

  • Use H21.329 for Implantation cysts of iris, ciliary body or anterior chamber, unspecified eye - BILLABLE CODE

  • H21.33 for Parasitic cyst of iris, ciliary body or anterior chamber - NON-BILLABLE CODE

  • Use H21.331 for Parasitic cyst of iris, ciliary body or anterior chamber, right eye - BILLABLE CODE

  • Use H21.332 for Parasitic cyst of iris, ciliary body or anterior chamber, left eye - BILLABLE CODE

  • Use H21.333 for Parasitic cyst of iris, ciliary body or anterior chamber, bilateral - BILLABLE CODE

  • Use H21.339 for Parasitic cyst of iris, ciliary body or anterior chamber, unspecified eye - BILLABLE CODE

  • H21.34 for Primary cyst of pars plana - NON-BILLABLE CODE

  • Use H21.341 for Primary cyst of pars plana, right eye - BILLABLE CODE

  • Use H21.342 for Primary cyst of pars plana, left eye - BILLABLE CODE

  • Use H21.343 for Primary cyst of pars plana, bilateral - BILLABLE CODE

  • Use H21.349 for Primary cyst of pars plana, unspecified eye - BILLABLE CODE

  • H21.35 for Exudative cyst of pars plana - NON-BILLABLE CODE

  • Use H21.351 for Exudative cyst of pars plana, right eye - BILLABLE CODE

  • Use H21.352 for Exudative cyst of pars plana, left eye - BILLABLE CODE

  • Use H21.353 for Exudative cyst of pars plana, bilateral - BILLABLE CODE

  • Use H21.359 for Exudative cyst of pars plana, unspecified eye - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • miotic pupillary cyst H21.27

Patient Education


Eye Diseases

Some eye problems are minor and don't last long. But some can lead to a permanent loss of vision.

Common eye problems include:

  • Refractive errors
  • Cataracts - clouded lenses
  • Optic nerve disorders, including glaucoma
  • Retinal disorders - problems with the nerve layer at the back of the eye
  • Macular degeneration - a disease that destroys sharp, central vision
  • Diabetic eye problems
  • Conjunctivitis - an infection also known as pink eye

Your best defense is to have regular checkups, because eye diseases do not always have symptoms. Early detection and treatment could prevent vision loss. See an eye care professional right away if you have a sudden change in vision, if everything looks dim, or if you see flashes of light. Other symptoms that need quick attention are pain, double vision, fluid coming from the eye, and inflammation.

NIH: National Eye Institute


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.