G10 ICD-10-CA code: Huntington's disease
G10 is the ICD-10-CA code for “Huntington's disease” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
G10Huntington's disease
ICD-10-CA · Canada
Index terms
Entries in CIHI’s alphabetical index that lead to G10. Searching the index by the condition the note names is how coders reach this code.
- Huntington's disease or chorea
- Chorea (gravis) (spasmodic), hereditary
- Chorea (gravis) (spasmodic), Huntington's
- Chorea (gravis) (spasmodic), progressive, hereditary
Notes for G10
As CIHI prints them, with any note G10 takes from the headings above it.
Includes
- Huntington's chorea
Excludes
Conditions classified elsewhere.
- With Alzheimer's disease (G30.80)
- 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 G10 sits
- 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
- 2Block G10-G14Systemic atrophies primarily affecting the central nervous system
- 3Valid code G10Huntington's 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 G10 mean?
G10 is the ICD-10-CA code for “Huntington's disease” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is G10 in ICD-10-CA?
G10 sits under G10-G14 Systemic atrophies primarily affecting the central nervous system, within Chapter 6: Diseases of the nervous system (G00-G99).
What coding notes apply to G10?
ICD-10-CA lists Includes, Excludes notes for G10, 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.