Profession

Career that involves specialized training and requires individuals to study extensively to master a complex body of knowledge and have the ability to apply the knowledge.
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The word implies professed attainment in special knowledge as distinguished from mere skill. A practical dealing with affairs as distinguished from mere study or investigation, and an application of such knowledge to uses for others as a vocation, as distinguished from its pursuit for its own purposes.

professional component (PC)

That portion of a test or procedure (containing both professional and technical components) for which the physician reads and interprets but does not perform the test (i.e., interpreting an electrocardiogram [ECG], reading an x-ray, or making an observation and determination using a microscope). In hospital billing, this component is billed separately from the inpatient hospital charges.