H21 ICD-10-CA category: Other disorders of iris and ciliary body
H21 isn’t a code on its own. Choose one of the 8 codes beneath it, the one the documentation supports.
Official description
H21Other disorders of iris and ciliary body
ICD-10-CA · Canada
Codes in H21
H21 isn’t a code on its own. Open the code that matches what the note documents.
H21.0HyphaemaH21.1Other vascular disorders of iris and ciliary bodyH21.2Degeneration of iris and ciliary bodyH21.3Cyst of iris, ciliary body and anterior chamberH21.4Pupillary membranesH21.5Other adhesions and disruptions of iris and ciliary bodyH21.8Other specified disorders of iris and ciliary bodyH21.9Disorder of iris and ciliary body, unspecifiedNotes for H21
As CIHI prints them, with any note H21 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Sympathetic uveitis (H44.1)
- 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 sits
- 1ChapterChapter 7: Diseases of the eye and adnexa (H00-H59)
- 2Block H15-H22Disorders of sclera, cornea, iris and ciliary body
- 3Category H21Other disorders of iris and ciliary body
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.
Frequently asked questions
Is H21 a valid ICD-10-CA code?
No. H21 (Other disorders of iris and ciliary body) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 8 codes; record the one the documentation supports.
Where is H21 in ICD-10-CA?
H21 sits under 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?
ICD-10-CA lists Excludes notes for H21, 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.