Anesthesia coding

1.What add-on code should you report in addition to the code for the primary anesthesia procedure to describe anesthesia complicated by utilization of total body hypothermia?





2.What code should you report for anesthesia for open procedures involving the hip joint; total hip arthroplasty?





3.What physical status modifier should coders append to describe a patient with a severe systemic disease?





4.What code should you report for anesthesia for all closed procedures on the radius, ulna, wrist, or hand bones?





5.What code should you report for anesthesia for all open procedures on upper ends of the tibia, fibula, and/or patella?