XVIII: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
R40-R46: Symptoms and signs involving cognition, perception, emotional state and behaviour
The range of conditions coded from R40-R46 in the ICD-10 WHO 2016 classification, titled "Symptoms and signs involving cognition, perception, emotional state and behaviour," refers to a group of conditions that impact cognitive function, perception, emotional well-being, and behavior. These conditions can present as awareness disturbances, sleeping abnormalities, hallucinations, mood changes, and personality shifts. Common triggers can include stress, trauma, existing mental or physical health conditions, or certain medications. The progression of these conditions can depend largely on the underlying cause and may become chronic if left untreated. These conditions can disrupt everyday activities and interactions as they tend to impair an individual's ability to think, perceive their surroundings, regulate their emotions, or control their behaviors in a manner often regarded as standard.
Subcodes of R40-R46:
- R40: Somnolence, stupor and coma
- R41: Other symptoms and signs involving cognitive functions and awareness
- R42: Dizziness and giddiness
- R43: Disturbances of smell and taste
- R44: Other symptoms and signs involving general sensations and perceptions
- R45: Symptoms and signs involving emotional state
- R46: Symptoms and signs involving appearance and behaviour
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.