A Universal Electronic Health Record-based IMPROVE DD VTE Risk Assessment Model for the Prevention of Thromboembolism in Hospitalized Medically Ill Patients

Inclusion Criteria: • Patients with an acute medical illness and ONE of the following risk factors: * Age \> 60 years * Presence of known thrombophilia * Intensive care unit (ICU)/coronary care unit (CCU) stay * Lower extremity paralysis * Cancer * Immobilization * Previous VTE history * D-dimer (\>2X ULN) Exclusion Criteria: • Patients with the following factors: * Therapeutic anticoagulation * History of recent bleeding. * Active gastroduodenal ulcer * Thrombocytopenia (admission platelet count\< 75x 109 cells/L ) * Coagulopathy (baseline INR \> 1.5) * Severe renal insufficiency (baseline)CrCl \< 30ml/min) * Dual antiplatelet therapy * Bronchiectasis/pulmonary cavitation * Active cancer, and recent major surgery within 30 days of their index hospitalization bleeding.