Try for free

H21.3 ICD-10-CA code: Cyst of iris, ciliary body and anterior chamber

H21.3 is the ICD-10-CA code for “Cyst of iris, ciliary body and anterior chamber” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

H21.3

Cyst of iris, ciliary body and anterior chamber

Short description: Cyst iris ciliary body anterior chamber

ICD-10-CA · Canada · Also written H213

Index terms

Entries in CIHI’s alphabetical index that lead to H21.3. Searching the index by the condition the note names is how coders reach this code.

  • Implantation, cyst, iris
  • Cyst (colloid) (mucous) (retention) (simple), dermoid, implantation, iris
  • Cyst (colloid) (mucous) (retention) (simple), implantation (dermoid), iris
  • Cyst (colloid) (mucous) (retention) (simple), iris (exudative) (implantation) (parasitic)
  • Cyst (colloid) (mucous) (retention) (simple), ciliary body (exudative) (implantation) (parasitic)
  • Cyst (colloid) (mucous) (retention) (simple), anterior chamber (eye) (exudative) (implantation) (parasitic)

Notes for H21.3

As CIHI prints them, with any note H21.3 takes from the headings above it.

Includes

  • Cyst of iris, ciliary body or anterior chamber:• NOS• exudative• implantation• parasitic

Excludes

Conditions classified elsewhere.

  • Miotic pupillary cyst (H21.2)
  • Sympathetic uveitis (H44.1)From H21 Other disorders of iris and ciliary body
  • Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 7: Diseases of the eye and adnexa (H00-H59)

Where H21.3 sits

  1. 1ChapterChapter 7: Diseases of the eye and adnexa (H00-H59)
  2. 2Block H15-H22Disorders of sclera, cornea, iris and ciliary body
  3. 3Category H21Other disorders of iris and ciliary body
  4. 4Valid code H21.3Cyst of iris, ciliary body and anterior chamber

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See H21.3 in the CIHI source

Frequently asked questions

What does ICD-10-CA code H21.3 mean?

H21.3 is the ICD-10-CA code for “Cyst of iris, ciliary body and anterior chamber” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is H21.3 in ICD-10-CA?

H21.3 sits under H21 Other disorders of iris and ciliary body, within H15-H22 Disorders of sclera, cornea, iris and ciliary body, within Chapter 7: Diseases of the eye and adnexa (H00-H59).

What coding notes apply to H21.3?

ICD-10-CA lists Includes, Excludes notes for H21.3, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside H21.3

H21.0HyphaemaH21.1Other vascular disorders of iris and ciliary bodyH21.2Degeneration of iris and ciliary bodyH21.4Pupillary membranesH21.5Other adhesions and disruptions of iris and ciliary bodyH21.8Other specified disorders of iris and ciliary bodyH21.9Disorder of iris and ciliary body, unspecified