Problem: Assign and sequence diagnosis codes. The patient was admitted with an acute subdural hematoma that appeared to be related to the anticoagulant she had been on for some time. She underwent an CT scan of the brain, which confirmed the subdural hematoma. She had been on chronic Coumadin therapy and had also been taking aspirin as prescribed by her physician for a chronic left lower-extremity deep venous thrombosis. Her Coumadin and aspirin were held, and the prothrombin time was measured on a daily basis. The Coumadin was adjusted, and the aspirin was discontinued. The physician was queried and confirmed that the subdural hematoma was a result of the bleeding disorder caused by the Coumadin and aspirin. Her condition at discharge was good.