Patients with diabetes and clinical personnel use which of the following to monitor blood glucose levels?

When a bag-valve ventilation device is used with supplemental oxygen, it delivers an oxygen concentration of ________ percent

A) 40 B) 90 C) 60 D) 21

In CPT, what do facing triangles that appear in front of a code indicate?

A. revised code B. add-on code C. new/revised text other than a code descriptor D. new code