Average National Charge - Pulmonary Embolism Enlarge This is the U.S. national average of total charges (stratified) for all patients that have a pulmonary embolism. A pulmonary embolism is when blood flow into the lungs is obstructed. Usually, the obstruction is a blood clot that originally formed in the lower extremity but broke free and floated in the blood to the lungs. A pulmonary embolism may also be caused by foreign materials such as air bubbles or fat. Reference: [2] [4]

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