Thromboembolism is a vascular disorder characterised by obstruction of blood vessels (arteries or veins) due to the formation of an embolus (movement of blood clot from one place to another place), which originates from a blood clot (thrombus). Based on the location of blood clot formation, they are classified into venous thromboembolism (which occurs in veins) or arterial thromboembolism (which arises in arteries). Haematologists lead the healthcare team which diagnoses and treats thromboembolic disorders. While acute myocardial infarction (MI), atherothrombotic stroke and peripheral artery diseases (PAD) constitute thromboembolic arterial diseases, venous thromboembolism (VTE) includes deep venous thrombosis (DVT) and pulmonary embolism (PE).