Reticulation, dust (occupational)  504 | 
   | 
  Reticuloendotheliosis  | 
   | 
  Reticulohistiocytoma (giant cell)  277.89 | 
  Reticulohistiocytosis, multicentric  272.8 | 
  Reticulolymphosarcoma (diffuse) (M9613/3)  200.8 | 
   | 
  Reticulosarcoma (M9640/3)  200.0 | 
   | 
  Reticulosis (skin)  | 
   | 
  Retina, retinal - see condition  | 
  Retinitis (see also Chorioretinitis)  363.20 | 
   | 
  Retinoblastoma (M9510/3)  190.5 | 
   | 
  Retinochoroiditis (see also Chorioretinitis)  363.20 | 
   | 
  Retinopathy (background)  362.10 | 
   | 
   | 
   | 
   | 
  Retraction  | 
   | 
  Retrobulbar - see condition  | 
   | 
  Retrocecal - see also condition  | 
   | 
  Retrocession - see Retroversion  | 
  Retrodisplacement - see Retroversion  | 
  Retroflection, retroflexion - see Retroversion  | 
  Retrognathia, retrognathism (mandibular) (maxillary)  524.10 | 
  Retrograde  | 
   | 
   | 
  Retroperineal - see condition  | 
  Retroperitoneal - see condition  | 
   | 
  Retropharyngeal - see condition  | 
  Retroplacental - see condition  | 
  Retroposition - see Retroversion  | 
  Retrosternal thyroid (congenital)  759.2 | 
  Retroversion, retroverted  | 
   | 
  Retrusion, premaxilla (developmental)  524.04 | 
   | 
  Reverse, reversed  | 
   | 
   | 
  Reye-Sheehan syndrome (postpartum pituitary necrosis)  253.2 | 
  Rh (factor)  | 
   | 
  Rhabdomyolysis (idiopathic)  728.88 | 
  Rhabdomyoma (M8900/0) - see also Neoplasm, connective tissue, benign  | 
   | 
  Rhabdomyosarcoma (M8900/3) - see also Neoplasm connective tissue, malignant  | 
   | 
  Rhabdosarcoma (M8900/3) - see Rhabdomyosarcoma  | 
  Rhesus (factor) (Rh) incompatibility - see Rh, incompatibility  | 
  Rheumaticosis - see Rheumatism  | 
  Rheumatism, rheumatic (acute NEC)  729.0 | 
   | 
  Rheumatoid - see also condition  | 
   | 
  Rhinitis (atrophic) (catarrhal) (chronic) (croupous) (fibrinous) (hyperplastic) (hypertrophic) (membranous) (purulent) (suppurative) (ulcerative)  472.0 | 
   | 
  Rhinoantritis (chronic)  473.0 | 
   | 
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