Imaging
- B0 - Central Nervous System
- B2 - Heart
- B3 - Upper Arteries
- B4 - Lower Arteries
- B5 - Veins
- B7 - Lymphatic System
- B8 - Eye
- B9 - Ear, Nose, Mouth and Throat
- BB - Respiratory System
- BD - Gastrointestinal System
- BF - Hepatobiliary System and Pancreas
- BG - Endocrine System
- BH - Skin, Subcutaneous Tissue and Breast
- BL - Connective Tissue
- BN - Skull and Facial Bones
- BP - Non-Axial Upper Bones
- BQ - Non-Axial Lower Bones
- BR - Axial Skeleton, Except Skull and Facial Bones
- BT - Urinary System
- BU - Female Reproductive System
- BV - Male Reproductive System
- BW - Anatomical Regions
- BY - Fetus and Obstetrical