00000-09999: Anesthesia Services
10000-19999: Integumentary System
20000-29999: Musculoskeletal System
30000-39999: Respiratory, Cardiovascular, Hemic, and Lymphatic System
40000-49999: Digestive System
50000-59999: Urinary, Male Genital, Female Genital, Maternity Care, and Delivery System
60000-69999: Endocrine, Nervous, Eye and Ocular Adnexa, Auditory System
70000-79999: Radiology Services
80000-89999: Pathology and Laboratory Services
90000-99999: Evaluation & Management Services
Source:
American Medical Association, CPT 2010 Standard Edition. Retrieved from http://www.ama-assn.org/
