• Retroplacental - see condition
  • Retroposition - see Retroversion
  • Retrosternal thyroid (congenital) 759.2
  • Retroversion, retroverted
  • Retrusion, premaxilla (developmental) 524.04
  • Rett's syndrome 330.8
  • Reverse, reversed
  • Reye's syndrome 331.81
  • 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
  • Rhinodacryolith 375.57
  • Rhinolalia (aperta) (clausa) (open) 784.43