• Ring(s)
  • Ringed hair (congenital) 757.4
  • Ringing in the ear (see also Tinnitus) 388.30
  • Ringworm 110.9
  • Rise, venous pressure 459.89
  • Risk
  • Ritter's disease (dermatitis exfoliativa neonatorum) 695.81
  • Rivalry, sibling 313.3
  • Rivalta's disease (cervicofacial actinomycosis) 039.3
  • River blindness 125.3 [360.13]
  • Robert's pelvis 755.69
  • Robin's syndrome 756.0
  • Robinson's (hidrotic) ectodermal dysplasia 757.31
  • Robles' disease (onchocerciasis) 125.3 [360.13]
  • Rochalimea- see Rickettsial disease
  • Rocky Mountain fever (spotted) 082.0
  • Rodent ulcer (M8090/3) - see also Neoplasm, skin, malignant
  • Roentgen ray, adverse effect - see Effect, adverse, x-ray
  • Roetheln 056.9
  • Roger's disease (congenital interventricular septal defect) 745.4
  • Rokitansky's
  • Rokitansky-Aschoff sinuses (mucosal outpouching of gallbladder) (see also Disease, gallbladder) 575.8