| Rhabdomyosarcoma (M8900/3) - see also Neoplasm connective tissue, malignant | 
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  | Rhabdosarcoma (M8900/3) - see Rhabdomyosarcoma | 
  | Rhesus (factor) (Rh) incompatibility - see Rh, incompatibility | 
  | Rheumaticosis - see Rheumatism | 
  | Rheumatism, rheumatic (acute NEC) 729.0 | 
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  | Rheumatoid - see also condition | 
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  | Rhinitis (atrophic) (catarrhal) (chronic) (croupous) (fibrinous) (hyperplastic) (hypertrophic) (membranous) (purulent) (suppurative) (ulcerative) 472.0 | 
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  | Rhinoantritis (chronic) 473.0 | 
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  | 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 | 
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  | 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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