________ are organisms that live within other organisms

__________ and __________ areas (those with the greatest potential sources of infection) are physically separated when possible

A. Clean and contaminated C. Clean and clean contaminated B. Clean and dirty D. None of the above

ICD-10-CM uses an "X" in the __________ character(s) location as a placeholder to allow for further expansion

a. fifth only b. fifth or sixth c. sixth only d. seventh