| C0 | Central Nervous System |
| C2 | Heart |
| C5 | Veins |
| C7 | Lymphatic and Hematologic System |
| C8 | Eye |
| C9 | Ear, Nose, Mouth and Throat |
| CB | Respiratory System |
| CD | Gastrointestinal System |
| CF | Hepatobiliary System and Pancreas |
| CG | Endocrine System |
| CH | Skin, Subcutaneous Tissue and Breast |
| CP | Musculoskeletal System |
| CT | Urinary System |
| CV | Male Reproductive System |
| CW | Anatomical Regions |
