H18 ICD-10-CA category: Other disorders of cornea
H18 isn’t a code on its own. Choose one of the 10 codes beneath it, the one the documentation supports.
Official description
H18Other disorders of cornea
ICD-10-CA · Canada
Codes in H18
H18 isn’t a code on its own. Open the code that matches what the note documents.
H18.0Corneal pigmentations and depositsH18.1Bullous keratopathyH18.2Other corneal oedemaH18.3Changes in corneal membranesH18.4Corneal degenerationH18.5Hereditary corneal dystrophiesH18.6KeratoconusH18.7Other corneal deformitiesH18.8Other specified disorders of corneaH18.9Disorder of cornea, unspecifiedNotes for H18
As CIHI prints them, with any note H18 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- 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 H18 sits
- 1ChapterChapter 7: Diseases of the eye and adnexa (H00-H59)
- 2Block H15-H22Disorders of sclera, cornea, iris and ciliary body
- 3Category H18Other disorders of cornea
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 H18 a valid ICD-10-CA code?
No. H18 (Other disorders of cornea) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 10 codes; record the one the documentation supports.
Where is H18 in ICD-10-CA?
H18 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 H18?
ICD-10-CA lists Excludes notes for H18, 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.