G94.1 ICD-10-CA code: Hydrocephalus in neoplastic disease
G94.1 is the ICD-10-CA code for “Hydrocephalus in neoplastic disease” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
G94.1Hydrocephalus in neoplastic disease
ICD-10-CA · Canada · Also written G941
Notes for G94.1
As CIHI prints them, with any note G94.1 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 6: Diseases of the nervous system (G00-G99)
Where G94.1 sits
- 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
- 2Block G90-G99Other disorders of the nervous system
- 3Category G94Other disorders of brain in diseases classified elsewhere
- 4Valid code G94.1Hydrocephalus in neoplastic disease
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 G94.1 mean?
G94.1 is the ICD-10-CA code for “Hydrocephalus in neoplastic disease” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is G94.1 in ICD-10-CA?
G94.1 sits under G94 Other disorders of brain in diseases classified elsewhere, within G90-G99 Other disorders of the nervous system, within Chapter 6: Diseases of the nervous system (G00-G99).
What coding notes apply to G94.1?
ICD-10-CA lists Excludes notes for G94.1, 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.