| F00 – F09 | Mental disorders due to known physiological conditions (eg. Alzheimer’s, F00; Vascular dementia, F01) |
| F10 – F19 | Mental and behavioural disorders due to psychoactive substance use |
| F20 – F29 | Non-mood psychotic disorders (eg. Schizophrenia, F20) |
| F30 – F39 | Mood (affective) disorders |
| F40 – F48 | Anxiety and other non-psychotic mental disorders |
| F50 – F59 | Behavioural syndromes associated with physiological disturbances and physical factors (eg. Eating disorder, F50; Sleep disorder, F51) |
| F60 – F69 | Disorders of adult personality and behaviour |
| F70 – F79 | Intellectual disabilities |
| F80 – F89 | Pervasive and specific developmental disorders (eg. Specific developmental disorders of speech and language, F80) |
| F90 – F98 | Behavioural and emotional disorders with onset usually during childhood and adolescence (eg. Attention deficit hyperactivity disorder, F90; Conduct disorder, F91) |
| F99 | Unspecified mental disorder (disorder not otherwise specified) |
