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degenerative diseases of the nervous system (G30-G32) =
G30 Alzheimer's disease
- Includes Alzheimer's dementia senile and presenile forms
- Use additional code to identify:
- delirium, if applicable (F05)
- dementia with behavioral disturbance (F02.81)
- dementia without behavioral disturbance (F02.80)
- Excludes1: senile degeneration of brain NEC (G31.1)
- senile dementia NOS (F03)
- senility NOS (R41.81)
- G30.0 Alzheimer's disease with early onset
- G30.1 Alzheimer's disease with late onset
- G30.8 Other Alzheimer's disease
- G30.9 Alzheimer's disease, unspecified
G31 Other degenerative diseases of nervous system, not elsewhere classified
- Use additional code to identify:
- dementia with behavioral disturbance (F02.81)
- dementia without behavioral disturbance (F02.80)
- Excludes2: Reye's syndrome (G93.7)
- G31.0 Frontotemporal dementia
- G31.01 Pick's disease
- Circumscribed brain atrophy
- Progressive isolated aphasia
- G31.09 Other frontotemporal dementia
- Frontal dementia
- G31.01 Pick's disease
- G31.1 Senile degeneration of brain, not elsewhere classified
- Excludes1: Alzheimer's disease (G30.-)
- senility NOS (R41.81)
- Excludes1: Alzheimer's disease (G30.-)
- G31.2 Degeneration of nervous system due to alcohol
- Alcoholic cerebellar ataxia
- Alcoholic cerebellar degeneration
- Alcoholic cerebral degeneration
- Alcoholic encephalopathy
- Dysfunction of the autonomic nervous system due to alcohol
- Code also associated alcoholism (F10.-)
- G31.8 Other specified degenerative diseases of nervous system
- G31.81 Alpers disease
- Grey-matter degeneration
- G31.82 Leigh's disease
- Subacute necrotizing encephalopathy
- G31.83 Dementia with Lewy bodies
- Dementia
- G31.81 Alpers disease
