- Bayle's disease (dementia paralytica) 094.1
- Bazin's disease (primary) (see also Tuberculosis) 017.1
- Beach ear 380.12
- Beaded hair (congenital) 757.4
- Beals syndrome 759.82
- Beard's disease (neurasthenia) 300.5
- Bearn-Kunkel (-Slater) syndrome (lupoid hepatitis) 571.49
- Beat
- Beats
- Beau's
- Bechterew's disease (ankylosing spondylitis) 720.0
- Bechterew-Strümpell-Marie syndrome (ankylosing spondylitis) 720.0
- Beck's syndrome (anterior spinal artery occlusion) 433.8
- Becker's
- Beckwith (-Wiedemann) syndrome 759.89
- Bed confinement status V49.84
- Bedbugs bite(s) - see Injury, superficial, by site
- Bedclothes, asphyxiation or suffocation by 994.7
- Bednar's aphthae 528.2
- Bedsore (see also Ulcer, pressure) 707.00
- Bedwetting (see also Enuresis) 788.36
- Bee sting (with allergic or anaphylactic shock) 989.5
