Inulin was infused into antecubital vein of a healthy human subject whose GFR is 125ml/min. The inulin was infused at a steady rate of 75mg/min and periodically blood was withdrawn from the determination of the plasma inulin concentration, Pin. Pin reached a steady state value of 0.6mg/ml after 120 min. Calculate the urinary excretion of inulin in mg/min at this time. Show the calculation procedure that you used and explain the validity of using inulin in this manner

This patient undergoes a gallbladder sonogram due to epigastric pain. the report indicates that the visualized portions of the liver are normal. no free fluid noted within morisons pouch. the gallbladder is identified and is empty no evidence of wall thickening or surrounding fluid is seen there is no ductal dilation. the common hepatic duct and common bile duct measure 0.4 and 0.8 cm respectively. the common bile ductmeasurement is at the upper limits of normal what cpt code in icd-10 cm code was used