| D0 | Central and Peripheral Nervous System |
| D2 | Heart and Great Vessels |
| D7 | Lymphatic and Hematologic System |
| D8 | Eye |
| D9 | Ear, Nose, Mouth and Throat |
| DB | Respiratory System |
| DD | Gastrointestinal System |
| DF | Hepatobiliary System and Pancreas |
| DG | Endocrine System |
| DH | Skin |
| DM | Breast |
| DP | Musculoskeletal System |
| DT | Urinary System |
| DU | Female Reproductive System |
| DV | Male Reproductive System |
| DW | Anatomical Regions |