If we perform a HIDA scan using Ensure® instead of CCK (cholecystokinin) to stimulate the gallbladder to obtain an ejection fraction, can we still assign code 78227?
No, as indicated in the descriptor below, code 78227 requires pharmacologic intervention, and Ensure® is not considered a drug. You would assign code 78226 instead of 78227.
78226 Hepatobiliary system imaging, including gallbladder when present;
78227 Hepatobiliary system imaging, including gallbladder when present; with pharmacologic intervention, including quantitative measurement(s) when performed