- Baastrup\’s disease
- Babesiosis, B60.00
- Babington\’s disease (familial hemorrhagic telangiectasia), I78.0
- Babinski\’s syndrome, A52.79
- Baby
- Bacillary
- Bacilluria, R82.71
- Bacillus
- Back
- Backache (postural), M54.9
- Backflow
- Backward reading (dyslexia), F81.0
- Bacteremia, R78.81
- Bactericholia
- Bacterid, bacteride (pustular), L40.3
- Bacterium, bacteria, bacterial
- Bacteriuria, bacteruria, R82.71
- Bacteroides
- Bad
- Baelz\’s disease (cheilitis glandularis apostematosa), K13.0
- Baerensprung\’s disease (eczema marginatum), B35.6
- Bagasse disease or pneumonitis, J67.1
- Bagassosis, J67.1
- Baker\’s cyst
- Bakwin-Krida syndrome (metaphyseal dysplasia), Q78.5
- Balancing side interference, M26.56
- Balanitis (circinata) (erosiva) (gangrenosa) (phagedenic) (vulgaris), N48.1
- Balanoposthitis, N47.6
- Balanorrhagia
- Balantidiasis, balantidiosis, A07.0
- Bald tongue, K14.4
- Baldness
- Balkan grippe, A78
- Balloon disease
- Balo\’s disease (concentric sclerosis), G37.5
- Bamberger-Marie disease
- Bancroft\’s filariasis, B74.0
- Band (s)
- Bandemia, D72.825
- Bandl\’s ring, complicating delivery (contraction), O62.4
- Bangkok hemorrhagic fever, A91
- Bang\’s disease (brucella abortus), A23.1
- Bankruptcy (anxiety concerning), Z59.86
- Bannister\’s disease, T78.3
- Banti\’s disease or syndrome (with cirrhosis) (with portal hypertension), K76.6
- Bar, median, prostate
- Barcoo disease or rot
- Barlow\’s disease, E54
- Barodontalgia, T70.29
- Baron Münchausen syndrome
- Barosinusitis, T70.1
- Barotitis, T70.0
- Barotrauma, T70.29
- Barraquer (-Simons) disease or syndrome (progressive lipodystrophy), E88.1
- Barré-Guillain disease or syndrome, G61.0
- Barré-Liéou syndrome (posterior cervical sympathetic), M53.0
- Barrel chest, M95.4
- Barrett\’s
- Barth syndrome, E78.71
- Bartholinitis (suppurating), N75.8
- Bartonellosis, A44.9
- Barton\’s fracture, S52.56-
- Bartter\’s syndrome, E26.81
- Basal
- Basan\’s ectodermal dysplasia (hidrotic), Q82.4
- Baseball finger
- Basedow\’s disease (exophthalmic goiter)
- Basic
- Basilar
- Bason\’s ectodermal dysplasia (hidrotic), Q82.4
- Basopenia
- Basophilia, D72.824
- Basophilism (cortico-adrenal) (Cushing\’s) (pituitary), E24.0
- Bassen-Kornzweig disease or syndrome, E78.6
- Bat ear, Q17.5
- Bateman\’s
- Bathing cramp, T75.1
- Bathophobia, F40.248
- Batten disease (-Mayou), E75.4
- Batten-Steinert syndrome, G71.11
- Battered
- Battey Mycobacterium infection, A31.0
- Battle exhaustion, F43.0
- Battledore placenta, O43.19-
- Baumgarten-Cruveilhier cirrhosis, disease or syndrome, K74.69
- Bauxite fibrosis (of lung), J63.1
- Bayle\’s disease (general paresis), A52.17
- Bazin\’s disease (primary) (tuberculous), A18.4
- Bársony (-Polgár) (-Teschendorf) syndrome (corkscrew esophagus), K22.4
- Béal conjunctivitis or syndrome, B30.2
- Bürger-Grütz disease or syndrome, E78.3
- Beach ear
- Beaded hair (congenital), Q84.1
- Beard\’s disease (neurasthenia), F48.8
- Beat (s)
- Beau\’s
- Bechterev\’s syndrome
- Becker\’s
- Beckwith-Wiedemann syndrome, Q87.3
- Beck\’s syndrome (anterior spinal artery occlusion), I65.8
- Bed confinement status, Z74.01
- Bed sore
- Bed-sharing, infant, Z72.823
- Bedbug bite (s)
- Bedclothes, asphyxiation or suffocation by
- Bednar\’s
- Bedridden, Z74.01
- Bedsore
- Bedwetting
- Bee sting (with allergic or anaphylactic shock)
- Beer drinker\’s heart (disease), I42.6
- Begbie\’s disease (exophthalmic goiter)
- Behavior
- Behçet\’s disease or syndrome, M35.2
- Behr\’s disease
- Beigel\’s disease or morbus (white piedra), B36.2
- Bejel, A65
- Bekhterev\’s syndrome
- Belching
- Bell\’s
- Bence Jones albuminuria or proteinuria NEC, R80.3
- Bends, T70.3
- Benedikt\’s paralysis or syndrome, G46.3
- Benign
- Bennett\’s fracture (displaced), S62.21-
- Benson\’s disease
- Bent
- Bereavement (uncomplicated), Z63.4
- Bergeron\’s disease (hysterical chorea), F44.4
- Berger\’s disease
- Beriberi (dry), E51.11
- Berlin\’s disease or edema (traumatic), S05.8X-
- Berlock dermatitis (berloque), L56.2
- Bernard-Horner syndrome, G90.2
- Bernard-Soulier disease or thrombopathia, D69.1
- Bernhardt disease (-Roth)
- Bernheim\’s syndrome
- Bertielliasis, B71.8
- Berylliosis (lung), J63.2
- Besnier-Boeck disease (-Schaumann)
- Besnier\’s
- Bestiality, F65.89
- Best\’s disease, H35.50
- Beta-mercaptolactate-cysteine disulfiduria, E72.09
- Betalipoproteinemia, broad or floating, E78.2
- Betting and gambling, Z72.6
- Bezoar, T18.9
- Bezold\’s abscess
- Bianchi\’s syndrome, R48.8
- Bicornate or bicornis uterus, Q51.3
- Bicuspid aortic valve, Q23.1
- Biedl-Bardet syndrome, Q87.89
- Bielschowsky disease (-Jansky), E75.4
- Biermer\’s anemia or disease (pernicious), D51.0
- Biett\’s disease, L93.0
- Bifid (congenital)
- Biforis uterus (suprasimplex), Q51.3
- Bifurcation (congenital)
- Big spleen syndrome, D73.1
- Bigeminal pulse, R00.8
- Bilateral
- Bile
- Bilharziasis
- Biliary
- Bilirubin metabolism disorder, E80.7
- Bilirubinemia, familial nonhemolytic, E80.4
- Bilirubinuria, R82.2
- Biliuria, R82.2
- Bilocular stomach, K31.2
- Binswanger\’s disease, I67.3
- Biparta, bipartite
- Bird
- Birt-Hogg-Dube syndrome, Q87.89
- Birth
- Birthmark, Q82.5
- Bisalbuminemia, E88.09
- Biskra\’s button, B55.1
- Bite (s) (animal) (human)
- Biting, cheek or lip, K13.1
- Biventricular failure (heart), I50.82
- Björck (-Thorson) syndrome (malignant carcinoid), E34.0
- Black
- Blackfan-Diamond anemia or syndrome (congenital hypoplastic anemia), D61.01
- Blackhead, L70.0
- Blackout, R55
- Bladder
- Blast (air) (hydraulic) (immersion) (underwater)
- Blastoma
- Blastomycosis, blastomycotic, B40.9
- Bleb (s), R23.8
- Blebitis, postprocedural, H59.40
- Bleeder (familial) (hereditary)
- Bleeding
- Blennorrhagia, blennorrhagic
- Blennorrhea (acute) (chronic)
- Blepharelosis
- Blepharitis (angularis) (ciliaris) (eyelid) (marginal) (nonulcerative), H01.009
- Blepharochalasis, H02.30
- Blepharoclonus, H02.59
- Blepharoconjunctivitis, H10.50-
- Blepharophimosis (eyelid), H02.529
- Blepharoptosis, H02.40-
- Blepharopyorrhea, gonococcal, A54.39
- Blepharospasm, G24.5
- Blighted ovum, O02.0
- Blind
- Blindness (acquired) (congenital) (both eyes), H54.0X-
- Blister (nonthermal)
- Bloating, R14.0
- Bloch-Sulzberger disease or syndrome, Q82.3
- Block, blocked
- Blockage
- Blocq\’s disease, F44.4
- Blood
- Blood-forming organs, disease, D75.9
- Bloodgood\’s disease
- Bloom syndrome (-Machacek)(-Torre), Q82.8
- Blount disease or osteochondrosis, M92.51-
- Blue
- Blueness
- Blues, postpartal, O90.6
- Blurring, visual, H53.8
- Blushing (abnormal) (excessive), R23.2
- BMI
- Boarder, hospital NEC, Z76.4
- Bockhart\’s impetigo, L01.02
- Bodechtel-Guttman disease (subacute sclerosing panencephalitis), A81.1
- Boder-Sedgwick syndrome (ataxia-telangiectasia), G11.3
- Body, bodies
- Boeck\’s
- Boerhaave\’s syndrome (spontaneous esophageal rupture), K22.3
- Boggy
- Boil
- Bold hives
- Bombé, iris
- Bone
- Bonnevie-Ullrich syndrome, Q87.19
- Bonnier\’s syndrome
- Bonvale dam fever, T73.3
- Bony block of joint
- BOOP (bronchiolitis obliterans organized pneumonia), J84.89
- Borderline
- Borna disease, A83.9
- Bornholm disease, B33.0
- Boston exanthem, A88.0
- Botalli, ductus (patent) (persistent), Q25.0
- Bothriocephalus latus infestation, B70.0
- Botulism (foodborne intoxication), A05.1
- Bouba
- Bouchard\’s nodes (with arthropathy), M15.2
- Bouffée délirante, F23
- Bouillaud\’s disease or syndrome (rheumatic heart disease), I01.9
- Bourneville\’s disease, Q85.1
- Boutonniere deformity (finger)
- Bouveret (-Hoffmann) syndrome (paroxysmal tachycardia), I47.9
- Bovine heart
- Bowel
- Bowen\’s
- Bowing
- Bowleg (s) (acquired), M21.16-
- Boyd\’s dysentery, A03.2
- Brachial
- Brachycardia, R00.1
- Brachycephaly, Q75.0
- Bradley\’s disease, A08.19
- Bradyarrhythmia, cardiac, I49.8
- Bradycardia (sinoatrial) (sinus) (vagal), R00.1
- Bradykinesia, R25.8
- Bradypnea, R06.89
- Bradytachycardia, I49.5
- Brailsford\’s disease or osteochondrosis
- Brain
- Branched-chain amino-acid disorder, E71.2
- Branchial
- Branchiogenic remnant (in neck), Q18.0
- Brandt\’s syndrome (acrodermatitis enteropathica), E83.2
- Brash (water), R12
- Bravais-jacksonian epilepsy
- Braxton Hicks contractions
- Brazilian leishmaniasis, B55.2
- BRBPR, K62.5
- Break, retina (without detachment), H33.30-
- Breakdown
- Breast
- Breath
- Breathing
- Breathlessness, R06.81
- Breda\’s disease
- Breech presentation (mother), O32.1
- Breisky\’s disease, N90.4
- Brennemann\’s syndrome, I88.0
- Brenner
- Bretonneau\’s disease or angina, A36.0
- Breus\’ mole, O02.0
- Brevicollis, Q76.49
- Brickmakers\’ anemia, B76.9
- Bridge, myocardial, Q24.5
- Bright red blood per rectum (BRBPR), K62.5
- Bright\’s disease
- Brill (-Zinsser) disease (recrudescent typhus), A75.1
- Brill-Symmers\’ disease, C82.90
- Brion-Kayser disease
- Briquet\’s disorder or syndrome, F45.0
- Brissaud\’s
- Brittle
- Broad
- Broad- or floating-betalipoproteinemia, E78.2
- Brock\’s syndrome (atelectasis due to enlarged lymph nodes), J98.19
- Brocq-Duhring disease (dermatitis herpetiformis), L13.0
- Brodie\’s abscess or disease, M86.8X-
- Broken
- Bromhidrosis, bromidrosis, L75.0
- Bromidism, bromism, G92.8
- Bromidrosiphobia, F40.298
- Bronchi, bronchial
- Bronchiectasis (cylindrical) (diffuse) (fusiform) (localized) (saccular), J47.9
- Bronchiolectasis
- Bronchiolitis (acute) (infective) (subacute), J21.9
- Bronchitis (diffuse) (fibrinous) (hypostatic) (infective) (membranous), J40
- Bronchoalveolitis, J18.0
- Bronchoaspergillosis, B44.1
- Bronchocele meaning goiter, E04.0
- Broncholithiasis, J98.09
- Bronchomalacia, J98.09
- Bronchomycosis NOS, B49
- Bronchopleuropneumonia
- Bronchopneumonia
- Bronchopneumonitis
- Bronchopulmonary
- Bronchopulmonitis
- Bronchorrhagia (see Hemoptysis)
- Bronchorrhea, J98.09
- Bronchospasm (acute), J98.01
- Bronchospirochetosis, A69.8
- Bronchostenosis, J98.09
- Bronchus
- Brontophobia, F40.220
- Bronze baby syndrome, P83.88
- Brooke\’s tumor
- Brown enamel of teeth (hereditary), K00.5
- Brown-Séquard disease, paralysis or syndrome, G83.81
- Brown\’s sheath syndrome, H50.61-
- Bruce sepsis, A23.0
- Brucellosis (infection), A23.9
- Bruck-de Lange disease, Q87.19
- Bruck\’s disease
- BRUE (brief resolved unexplained event), R68.13
- Brugsch\’s syndrome, Q82.8
- Bruise (skin surface intact)
- Bruit (arterial), R09.89
- Brush burn
- Bruton\’s X-linked agammaglobulinemia, D80.0
- Bruxism
- Bubbly lung syndrome, P27.0
- Bubo, I88.8
- Bubonic plague, A20.0
- Bubonocele
- Buccal
- Buchanan\’s disease or osteochondrosis, M91.0
- Buchem\’s syndrome (hyperostosis corticalis), M85.2
- Bucket-handle fracture or tear (semilunar cartilage)
- Budd-Chiari syndrome (hepatic vein thrombosis), I82.0
- Budgerigar fancier\’s disease or lung, J67.2
- Buds
- Buerger\’s disease (thromboangiitis obliterans), I73.1
- Bulbar
- Bulbus cordis (left ventricle) (persistent), Q21.8
- Bulimia (nervosa), F50.2
- Bulky
- Bulla (e), R23.8
- Bullet wound
- Bundle
- Bunion, M21.61-
- Bunionette, M21.62-
- Buphthalmia, buphthalmos (congenital), Q15.0
- Burdwan fever, B55.0
- Buried
- Burke\’s syndrome, K86.89
- Burkitt
- Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal), T30.0
- Burn-out (state), Z73.0
- Burnett\’s syndrome, E83.52
- Burning
- Burns\’ disease or osteochondrosis
- Bursa
- Bursitis, M71.9
- Bursopathy, M71.9
- Burst stitches or sutures (complication of surgery), T81.31
- Buruli ulcer, A31.1
- Bury\’s disease, L95.1
- Buschke\’s
- Busse-Buschke disease
- Buttock
- Button
- Buttonhole deformity (finger)
- Bwamba fever, A92.8
- Byssinosis, J66.0
- Bywaters\’ syndrome, T79.5