| Crocq's disease (acrocyanosis) 443.89 | 
  | Crohn's disease (see also Enteritis, regional) 555.9 | 
  | Cronkhite-Canada syndrome 211.3 | 
  | Crooked septum, nasal 470 | 
  | Cross | 
  |  | 
  | Crossed ectopia of kidney 753.3 | 
  |  | 
  | Croup, croupous (acute) (angina) (catarrhal) (infective) (inflammatory) (laryngeal) (membranous) (nondiphtheritic) (pseudomembranous) 464.4 | 
  |  | 
  | Crouzon's disease (craniofacial dysostosis) 756.0 | 
  |  | 
  | CRST syndrome (cutaneous systemic sclerosis) 710.1 | 
  | Cruchet's disease (encephalitis lethargica) 049.8 | 
  | Cruelty in children (see also Disturbance, conduct) 312.9 | 
  | Crural ulcer (see also Ulcer, lower extremity) 707.10 | 
  | Crush, crushed, crushing (injury) 929.9 | 
  |  | 
  |  | 
  |  | 
  |  | 
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  | Cruveilhier-Baumgarten cirrhosis, disease, or syndrome 571.5 | 
  | Cruz-Chagas disease (see also Trypanosomiasis) 086.2 | 
  | Crying | 
  |  | 
  |  | 
  | Cryoglobulinemia (mixed) 273.2 | 
  |  | 
  | Cryptitis (anal) (rectal) 569.49 | 
  | Cryptococcosis (European) (pulmonary) (systemic) 117.5 | 
  |  | 
  |  | 
  | Cryptopapillitis (anus) 569.49 | 
  | Cryptophthalmos (eyelid) 743.06 | 
  | Cryptorchid, cryptorchism, cryptorchidism 752.51 | 
  |  | 
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  | Crystallopathy | 
  |  | 
  |  | 
  | Csillag's disease (lichen sclerosus et atrophicus) 701.0 | 
  |  | 
  | Cubitus | 
  |  | 
  | Cultural deprivation V62.4 | 
  |  | 
  | Curling's ulcer - see Ulcer, duodenum | 
  |  | 
  | Curschmann (-Batten) (-Steinert) disease or syndrome 359.21 | 
  | Curvature | 
  |  | 
  | Cushing's | 
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  | Cushingoid due to steroid therapy | 
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  | Cut (external) - see Wound, open, by site | 
  | Cutaneous - see also condition | 
  |  | 
  | Cutis - see also condition | 
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