| 
  Rhinolalia (aperta) (clausa) (open)  784.49 | 
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  Rhinopharyngitis (acute) (subacute) (see also Nasopharyngitis)  460 | 
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  Rhinovirus infection  079.3 | 
  Rhizomelic chrondrodysplasia punctata  277.86 | 
  Rhizomelique, pseudopolyarthritic  446.5 | 
  Rhoads and Bomford anemia (refractory)  238.72 | 
  Rhus  | 
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  Rhythm  | 
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  Rhytidosis facialis  701.8 | 
  Rib - see also condition  | 
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  Riboflavin deficiency  266.0 | 
  Rice bodies (see also Loose, body, joint)  718.1 | 
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  Richter's hernia - see Hernia, Richter's  | 
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  Rickets (active) (acute) (adolescent) (adult) (chest wall) (congenital) (current) (infantile) (intestinal)  268.0 | 
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  Rickettsial disease  083.9 | 
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  Riddoch's syndrome (visual disorientation)  368.16 | 
  Rider's  | 
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  Ridge, alveolus - see also condition  | 
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  Riedel's  | 
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  Rieger's anomaly or syndrome (mesodermal dysgenesis, anterior ocular segment)  743.44 | 
   | 
  Rietti-Greppi-Micheli anemia or syndrome  282.49 | 
  Rieux's hernia - see Hernia, Rieux's  | 
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  Riga's disease (cachectic aphthae)  529.0 | 
  Riga-Fede disease (cachectic aphthae)  529.0 | 
  Riggs' disease (compound periodontitis)  523.40 | 
  Right middle lobe syndrome  518.0 | 
  Rigid, rigidity - see also condition  | 
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  Riley-Day syndrome (familial dysautonomia)  742.8 | 
  RIND (reversible ischemic neurological deficit)  434.91 | 
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  Ring(s)  | 
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  Ringed hair (congenital)  757.4 | 
  Ringing in the ear (see also Tinnitus)  388.30 | 
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