Z21 Is a Code Used for Patients with HIV Who

question 21

True/False

Z21 is a code used for patients with HIV who have no symptoms and who have never had an AIDS-defining illness.

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Definitions:

Unstable Oxygen Molecules

Often referred to as free radicals, these are molecules with unpaired electrons that can cause oxidative damage to cells and tissues.

Empiricism

Empiricism is a theory that states that knowledge comes only or primarily from sensory experience.

Developmental Psychology

The scientific study of how and why human beings change over the course of their life, from infancy through old age, including cognitive, emotional, and social changes.

Comparative Psychology

Area of psychology in which the psychologists study animals and their behavior for the purpose of comparing and contrasting it to human behavior.