Nuclear Medicine
- 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