If a physician repeats a basic procedure performed by another physician, the modifier -77 should be used

To prevent microbial contamination, a(n) __________ may be added to oral liquid compounds

Fill in the blank(s) with correct word

Most departments purchase an instrument that is known as a three-, four-, or five-gas instrument, commonly referred to as a ____-gas detector,

A. many B. dosed C. multi D. common