G30 Alzheimer disease

NCCS

Guidance

Incl.:

senile and presenile forms

Excl.:

senile:

• degeneration of brain NEC (G31.1)
• dementia NOS (F03)

senility NOS ( R54)

G30.0 Alzheimer disease with early onset

Note:

Onset usually before the age of 65

G30.1 Alzheimer disease with late onset

Note:

Onset usually after the age of 65

G30.8 Other Alzheimer disease

NCCS

DCS.V.2

G30.9 Alzheimer disease, unspecified

G31 Other degenerative diseases of nervous system, not elsewhere classified

Excl.:

Reye syndrome ( G93.7)

G31.0 Circumscribed brain atrophy

Incl.:

Frontotemporal dementia (FTD)

Pick disease

Progressive isolated aphasia

G31.1 Senile degeneration of brain, not elsewhere classified

Excl.:

Alzheimer disease ( G30.-)

senility NOS ( R54)

G31.2 Degeneration of nervous system due to alcohol

Incl.:

Alcoholic:

• cerebellar:
  • —  ataxia
  • —  degeneration
• cerebral degeneration
• encephalopathy

Dysfunction of autonomic nervous system due to alcohol

G31.8 Other specified degenerative diseases of nervous system

Incl.:

Grey-matter degeneration [Alpers]

Lewy body(ies)(dementia)(disease) ( F02.8*)

Subacute necrotizing encephalopathy [Leigh]

G31.9 Degenerative disease of nervous system, unspecified

G32* Other degenerative disorders of nervous system in diseases classified elsewhere

G32.0* Subacute combined degeneration of spinal cord in diseases classified elsewhere

Excl.:

Subacute combined degeneration of spinal cord in vitamin B ₁₂ deficiency ( E53.8†)

G32.8* Other specified degenerative disorders of nervous system in diseases classified elsewhere