V: Mental and behavioural disorders
Mental and behavioural disorders are a wide range of conditions that affect a person's thoughts, emotions, and actions. They can result from a variety of causes, such as genetic factors, chemical imbalances in the brain, physical injuries, and stressful life events. These disorders can disrupt a person's daily life, making it difficult for them to work, maintain relationships, and take care of their own health. Common symptoms can include changes in mood, thought patterns, or behaviour; difficulty concentrating or making decisions; feelings of fear or distress; and changes in eating or sleeping habits. Some disorders progress slowly over time, while others may show sudden onset of symptoms. They can affect anyone, regardless of age, gender, or background. The impact of these disorders can range from mild to severe, with some requiring long-term care.
F00-F09: Organic, including symptomatic, mental disorders
F10-F19: Mental and behavioural disorders due to psychoactive substance use
F20-F29: Schizophrenia, schizotypal and delusional disorders
F30-F39: Mood [affective] disorders
F40-F48: Neurotic, stress-related and somatoform disorders
F50-F59: Behavioural syndromes associated with physiological disturbances and physical factors
F60-F69: Disorders of adult personality and behaviour
F70-F79: Mental retardation
F80-F89: Disorders of psychological development
F90-F98: Behavioural and emotional disorders with onset usually occurring in childhood and adolescence
F99-F99: Unspecified mental disorder
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.