This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of disease causation, Subject name: Social & Preventive Medicine
ICD chapter 21 includes all except - 
Select and explain. 
A. Alcohol, B. Tobacco, C. Injury, D. Drugs
C: Injury
Answer: C: Injury 
Explanation: Ans. is 'c' i.e.. Injury o ICD -10 code in chaptor XXI (Factor influencing health status and contact with health sendees): -Problem relating to lifestyleAlcohol useTobacoo useDrug useLack of physical exerciseInappropriate diet and eating habitsHigh risk sexual behaviour