Categorisation of mental/behavioral health diagnoses by ICD-9-CM codes
| Mental health diagnostic categories | Specific mental health disorders | ICD-9-CM code(s) |
| Mood disorders | Major depression | 296.2, 296.3 |
| Bipolar | 296.0, 296.4–296.7, 296.80, 296.89 | |
| Dysthymia | 300.4 | |
| Other depression | 311 | |
| Anxiety disorders | Non-PTSD anxiety disorder | 300.00, 300.02, 300.09, 300.10, 300.20, 300.22, 300.23, 300.29, 300.3, 308 |
| PTSD | 309.81 | |
| Additional mental health disorders | Adjustment disorder | 309 (except 309.81) |
| Personality disorder | 301 (except 301.13) | |
| Psychotic disorder | 295, 297, 298, 300.5 | |
| Substance related disorders | Alcohol-related disorder | 291, 303, 305.0 |
| Drug-related disorder | 292 (except 292.2), 304, 305 (except 305.0 and 305.1) |
ICD-9-CM, International Classification of Disease, version 9, clinical modification; PTSD, post-traumatic stress disorder.