Coding for the ASC, pt came in for colonoscopy but due to the patients poor health the procedure was not done. The pt had an IV and received 4 units of sterile saline. Two finger sticks were performed and 2 units of insulin were administerd. The pt was admitted to the hospital after 4 hours in the ASC. The pt was never taken to the procedure room. I am unclear on the definition for modifier -73. To use modifier -73 does the pt have to be taken to the procedure room?