G30.9 ICD-10-CA code: Alzheimer's disease, unspecified
G30.9 is the ICD-10-CA code for “Alzheimer's disease, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
G30.9Alzheimer's disease, unspecified
Short description: Alzheimer's disease unspecified
ICD-10-CA · Canada · Also written G309
Index terms
Entries in CIHI’s alphabetical index that lead to G30.9. Searching the index by the condition the note names is how coders reach this code.
- Alzheimer's disease or sclerosis
- Sclerosis, sclerotic, Alzheimer's
Notes for G30.9
As CIHI prints them, with any note G30.9 takes from the headings above it.
Includes
- Senile and presenile formsFrom G30 Alzheimer's disease
Use additional code
Add a code for this detail when the note documents it.
- Use additional code (F00.-*) to identify any associated dementia.From G30 Alzheimer's disease
Excludes
Conditions classified elsewhere.
- Senile:• degeneration of brain NEC (G31.1)• dementia NOS (F03)senility NOS (R54)From G30 Alzheimer's disease
- 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 G30.9 sits
- 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
- 2Block G30-G32Other degenerative diseases of the nervous system
- 3Category G30Alzheimer's disease
- 4Valid code G30.9Alzheimer's disease, unspecified
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 G30.9 mean?
G30.9 is the ICD-10-CA code for “Alzheimer's disease, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is G30.9 in ICD-10-CA?
G30.9 sits under G30 Alzheimer's disease, within G30-G32 Other degenerative diseases of the nervous system, within Chapter 6: Diseases of the nervous system (G00-G99).
What coding notes apply to G30.9?
ICD-10-CA lists Includes, Use additional code, Excludes notes for G30.9, 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.