All of a sudden I am confused. My doctor removed a stone percutaneously via access performed by radiology, he did not perform lithotripsy. Does 50080 require lithotripsy? The definition in CPT says "percutaneous nephrostolithotomy with or without dilation, endoscopy, lithotripsy, stenting or basket extraction. Or do I use 50561, "endoscopy through established nephrostomy with removal of calculus." I can't seem to understand the difference between these codes. Thank you!