Which of the following is the study of drugs, their actions, dosages, therapeutic effects, and side effects?

It is appropriate to report secondary codes for __________ conditions that were treated or medically managed or that influenced the treatment of the patient during the encounter

a. coexisting b. history (of) c. qualified d. uncertain

All modifiers consist of:

A. two letters. B. three numbers. C. three letters. D. two characters.