A linear-beam smoke detection system measures _____________between a transmitter and a receiver

Group insurance is issued to an employer to provide coverage for:

A. employees only. B. employees and spouses only. C. employees and children only. D. employees and all their dependents.

What modifier is used to indicate that a surgery and a significant E/M service were both performed on the same day?

a. -51 b. -25 c. -33 d. No modifier is necessary.