- CodeDescription
- X0 Nervous System
- X2 Cardiovascular System
- XD Gastrointestinal System
- XF Hepatobiliary System and Pancreas
- XH Skin, Subcutaneous Tissue, Fascia and Breast
- XK Muscles, Tendons, Bursae and Ligaments
- XN Bones
- XR Joints
- XT Urinary System
- XV Male Reproductive System
- XW Anatomical Regions
- XX Physiological Systems
- XY Extracorporeal