Lawrence, a 41-year-old pregnant woman, is advised to undergo amniocentesis by her obstetrician. Jarret, an interventional radiologist, uses...

Mrs. Lawrence, a 41-year-old pregnant woman, is advised to undergo amniocentesis by her obstetrician. Dr. Jarret, an interventional radiologist, uses ultrasonic guidance for the amniocentesis. How many codes would be used to report this service? How would the answer differ if two doctors, a radiologist, and a surgeon performed the procedure together?