Ask Dr. Z

Our radiology department has been asked to perform a Gastrograffin Challenge study to evaluate the small bowel, but without any fluoro imaging. Contrast is injected on the floor by the ordering provider and timed portable kub’s are obtained on the floor. The increments are: 4, 8, 12, and 24 hours post injection. How do you advise we bill for this? Would it be appropriate to bill CPT 74250 (even though fluoro imaging was not performed and water soluable contrast was injected by ordering physician), or would each subsequent kub billed separate?