The modifier -25 is used to indicate:

A. prolonged evaluation and management (E/M) service.
B. unrelated E/M service by the same physician during a postoperative period.
C. significant, separately identifiable E/M service by the same physician on the same day of the procedure or other service.
D. reduced services.

Answer: significant, separately identifiable E/M service by the same physician on the same day of the procedure or other service.