G31 – Other degenerative diseases of nervous system, not elsewhere classified
Coding Notes
Active
Non-billable / Non-specific, not valid for HIPAA-covered transactions
Additional
For codes G31.0-G31.83, G31.85-G31.9, use additional code to identify:
dementia with behavioral disturbance (F02.81)
dementia without behavioral disturbance (F02.80)
Tyoe 2 Excludes
Reye's syndrome (G93.7)
Child Codes
Sibling Codes
View in Tabular
| Code | Title |
|---|---|
| G00-G99 | Diseases of the nervous system (G00-G99) |
| G30-G32 | Other degenerative diseases of the nervous system (G30-G32) |
| G31 |
Other degenerative diseases of nervous system, not elsewhere classified
Use Additional
For codes G31.0-G31.83, G31.85-G31.9, use additional code to identify:
dementia with behavioral disturbance (F02.81)
dementia without behavioral disturbance (F02.80)
Type 2 Excludes
Reye's syndrome (G93.7)
|
| G31.0 | Frontotemporal dementia |
| G31.01 | Pick's disease |
| G31.09 | Other frontotemporal dementia |
| G31.1 | Senile degeneration of brain, not elsewhere classified |
| G31.2 | Degeneration of nervous system due to alcohol |
| G31.8 | Other specified degenerative diseases of nervous system |
| G31.81 | Alpers disease |
| G31.82 | Leigh's disease |
| G31.83 | Dementia with Lewy bodies |
| G31.84 | Mild cognitive impairment, so stated |
| G31.85 | Corticobasal degeneration |
| G31.89 | Other specified degenerative diseases of nervous system |
| G31.9 | Degenerative disease of nervous system, unspecified |