Which of the following is an unexpected illness or condition that develops as the result of a procedure?

A) Complication
B) Co-morbidity
C) Major complication or co-morbidity
D) Infection

Complication is an unexpected illness or condition that develops as the result of a procedure. Co-morbidity is a pre-existing condition that is unrelated to the procedure. Major complication or co-morbidity may refer to a serious pre-existing condition or a complication that has significant impact. Infection is a specific type of complication caused by the introduction of foreign pathogens during a procedure.