This has to be one of the most basic radiology coding questions, but if a physician sends a patient from the office to the hospital (outpatient) for an x-ray and then back to the office where the doctor interprets the film, how is the professional component billed with regard to place of service? Of course, the CPT would need the 26 modifier. Additionally, if the doctor did not actually look at the film until a later date, what would be the date of service?