Code 12.21 is assigned when a(n) _________ from the anterior chamber occurs for diagnostic purposes

Percent strength represents how many grams of active ingredient are in:

A) 1 mL. B) 10 mL. C) 100 mL. D) 1,000 mL.

Which of the following choices best describes a "New problem?"

A. …an undiagnosed new presenting problem that requires specific laboratory, pathology, or other diagnostic tests to identify the differential diagnosis B. a patient's presenting problem that is new or unfamiliar to the performing physician C. any patient's presenting problem that has already been diagnosed by the performing physician D. documentation that reflects the physician's unfamiliarity with the patient's presenting problem