After the patient found a lump in his scrotum, his doctor ordered an MRI of the scrotum with and without contrast. How would this be coded?

On the CMS-1500 claim form, the abbreviation EMG indicates that:

an employer identifier number must be entered. it must be noted if emergency services were provided. it must be noted if preauthorization was obtained. it must be noted if the service is considered emerging or experimental.

______________is used in both peripheral and coronary surgery to map the lumen of a vessel

A. Intravascular ultrasound B. Embolectomy catheter