The purpose of the terminology is to provide a uniform language that will accurately describe medical, surgical, and diagnostic services, and will thereby provide an effective means for reliable nationwide communication among physicians and other qualified health care professionals, patients, and third parties. CPT 2019 is the most recent revision of a work that first appeared in 1966.
CPT descriptive terms and identifying codes currently serve a wide variety of important functions in the field of medical nomenclature. The CPT code set is useful for administrative management purposes such as claims processing and for the development of guidelines for medical care review.(CPT 2020/Current Procedural Terminology Professional Edition; American Medical Association; American Medical Association ; About CPT: Paragraph 1, Paragraph 2)