In what provider settings can services be billed on a UB-04?

A 15-year-old female was struck in the mouth with a baseball bat. She has lost her front teeth and is spitting blood. The EMT's priority concern when caring for this patient would be:

A) blood loss. B) jaw fracture. C) seizure activity. D) airway compromise.

Which type of laser uses gases that are toxic and potentially fatal, and therefore rarely used in the OR setting?

a. argon b. CO2 c. excimer d. krypton