• Coccygodynia 724.79
  • Coccyx - see condition
  • Cochin-China
  • Cock's peculiar tumor 706.2
  • Cockayne's disease or syndrome (microcephaly and dwarfism) 759.89
  • Cockayne-Weber syndrome (epidermolysis bullosa) 757.39
  • Cocked-up toe 735.2
  • Codman's tumor (benign chondroblastoma) (M9230/0) - see Neoplasm, bone, benign
  • Coenurosis 123.8
  • Coffee workers' lung 495.8
  • Cogan's syndrome 370.52
  • Coiling, umbilical cord - see Complications, umbilical cord
  • Coitus, painful (female) 625.0
  • Cold 460
  • Coldsore (see also Herpes, simplex) 054.9
  • Colibacillosis 041.49
  • Colibacilluria 791.9
  • Colic (recurrent) 789.7
  • Colicystitis (see also Cystitis) 595.9
  • Colitis (acute) (catarrhal) (croupous) (cystica superficialis) (exudative) (hemorrhagic) (noninfectious) (phlegmonous) (presumed noninfectious) 558.9
  • Collagen disease NEC 710.9
  • Collagenosis (see also Collagen disease) 710.9