What is the term for a code that cannot be used alone?

The WHO classification of subgroups of ALL uses which of these criteria to help define the categories?

a. Cytochemistry and immunophenotyping b. Cytochemistry and molecular analysis c. Morphology of the blasts d. Morphology, immunophenotyping, and molecular analysis

Which of the following findings in the patient with Raynaud disease would indicate a need for further teaching?

a. The patient eats bananas twice a day. b. The patient smokes cigarettes. c. The patient wears mittens outside. d. The patient takes calcium channel block-ers.