I have a question regarding the usage of the 77 modifier. I work for a cardiologist office and we have both cardiologists and electrophysiologists in our office. In an instance that a patient may see both doctors on the same day would the modifier 77 be appropriate or is there another modifier that may be better suited? The situation in question is where the patient was scheduled to see the cardiologist and then he has suggested that he see the electrophysiologist. Please help....