Using an ICD-9-CM code book, select the appropriate code(s) for the diagnostic statements given in the following questions

The convention ________ signifies that the medical record contains additional details about the condition, but there is no more specific code available for use

a. NOS b. NEC c. X d. :

________ are single-celled eukaryotes that play a vital role in controlling the number of bacteria

A) Rickettsia B) Viruses C) Protozoa D) Parasites