We are going to begin giving a new drug (FDA approved) to our patients. One of the requirements is that when the patient takes the medication they are to be monitored for 6 hours for signs and symptoms of bradycardia. The only codes I can find to use is 99358 and 99359 (Prolonged physician service without direct (face to face) patient contact. My question is that since these are time codes do I use the same documentation as the time codes and is there a reference for these guidelines?