To have a common factor, two or more numbers must be factored and the largest factor that occurs in each number is the greatest common factor.
74270
The CPT code to use for a sophagram or barium swallow is 74220. This test is administered when a patient has pain or difficulty when swallowing.
The specific code for a barium enema with or without a KUB (kidney, ureter, bladder X-ray) would depend on the specific details of the procedure. However, the most commonly assigned code for a barium enema is CPT code 74280. Additional codes may be used for the KUB X-ray if performed. It is important to consult the current version of the CPT code book for accurate and up-to-date coding information.