Pulmonary embolism (PE) is one of the most three cardiovascular death beside stroke and myocardial infarction. PE is an emergency condition where pulmonary artery was clogged by certain thrombus. Wide varying clinical presentation of PE, from asymptomatic incidental finding to circulatory failure even sudden death, makes the diagnosis remains challenging. Risk stratification is one of diagnostic and therapeutic strategies. Identification of any circulatory failure in PE patients classified them as high risk patients, with greater mortality, which immediately need prompt reperfusion. The remaining group classified as intermediate risk and low risk. Low-risk group without ventricular dysfunction can be managed out patiently. Patients which are hemodynamically stable but in the risk for adverse complication, termed as intermediate-risk need hospital admission. Efforts have been made for estimating 30 days-mortalities between each group based on clinical or biomarker parameters by using scoring system such pulmonary emboly severity index (PESI), simplified pulmonary emboly severity index (sPESI) also Hestia criteria.