H47.4 ICD-10-CA code: Disorders of optic chiasm
H47.4 is the ICD-10-CA code for “Disorders of optic chiasm” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
H47.4Disorders of optic chiasm
ICD-10-CA · Canada · Also written H474
Index terms
Entries in CIHI’s alphabetical index that lead to H47.4. Searching the index by the condition the note names is how coders reach this code.
- Disorder (of), optic, chiasm
- Lesion (nontraumatic), chiasmal
- Lesion (nontraumatic), prechiasmal (optic)
- Lesion (nontraumatic), intrachiasmal (optic)
- Cyst (colloid) (mucous) (retention) (simple), chiasmal optic NEC
Notes for H47.4
As CIHI prints them, with any note H47.4 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 H47.4 sits
- 1ChapterChapter 7: Diseases of the eye and adnexa (H00-H59)
- 2Block H46-H48Disorders of optic nerve and visual pathways
- 3Category H47Other disorders of optic [2nd] nerve and visual pathways
- 4Valid code H47.4Disorders of optic chiasm
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
What does ICD-10-CA code H47.4 mean?
H47.4 is the ICD-10-CA code for “Disorders of optic chiasm” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is H47.4 in ICD-10-CA?
H47.4 sits under H47 Other disorders of optic [2nd] nerve and visual pathways, within H46-H48 Disorders of optic nerve and visual pathways, within Chapter 7: Diseases of the eye and adnexa (H00-H59).
What coding notes apply to H47.4?
ICD-10-CA lists Excludes notes for H47.4, 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.