Division of the Current Procedural Terminology (CPT) code book that contains information about injections, psychiatric procedures, dialysis services, gastroenterology procedures, ophthalmology services, otorhinolaryngologic services, cardiovascular therapeutic services, noninvasive vascular diagnostic studies, allergy and immunology tests, neurology and neuromuscular procedures, chemotherapy administration, physical medicine, acupuncture, chiropractic treatment, and other special services and procedures.