Perirectal - see condition  | 
  Perirenal - see condition  | 
  Perisalpingitis (see also Salpingo-oophoritis)  614.2 | 
   | 
  Perisplenitis (infectional)  289.59 | 
  Perispondylitis - see Spondylitis  | 
  Peristalsis reversed or visible  787.4 | 
  Peritendinitis (see also Tenosynovitis)  726.90 | 
   | 
  Perithelioma (M9150/1) - see Pericytoma  | 
  Peritoneum, peritoneal - see also condition  | 
   | 
  Peritonitis (acute) (adhesive) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion)  567.9 | 
   | 
  Peritonsillar - see condition  | 
   | 
  Perityphlitis (see also Appendicitis)  541 | 
   | 
  Periurethral - see condition  | 
  Periurethritis (gangrenous)  597.89 | 
  Periuterine - see condition  | 
  Perivaginitis (see also Vaginitis)  616.10 | 
  Perivasculitis, retinal  362.18 | 
  Perivasitis (chronic)  608.4 | 
  Periventricular leukomalacia  779.7 | 
  Perivesiculitis (seminal) (see also Vesiculitis)  608.0 | 
   | 
   | 
  Pernicious - see condition  | 
   | 
  Persecution  | 
   | 
   | 
  Persistence, persistent (congenital)  759.89 | 
   | 
  Person (with)  | 
   | 
  Personality  | 
   | 
  Perthes' disease (capital femoral osteochondrosis)  732.1 | 
  Pertussis (see also Whooping cough)  033.9 | 
   | 
   | 
  Perversion, perverted  | 
   | 
  Pervious, congenital - see also Imperfect, closure  | 
   | 
  Pes (congenital) (see also Talipes)  754.70 | 
   | 
  Pest (see also Plague)  020.9 | 
  Pestis (see also Plague)  020.9 | 
   | 
  Petechia, petechiae  782.7 | 
   | 
  Petechial  | 
   | 
  Petges-Cléjat or Petges-Clégat syndrome (poikilodermatomyositis)  710.3 | 
  Petit's  | 
   | 
  Petit mal (idiopathic) (see also Epilepsy)  345.0 | 
   | 
   | 
   | 
   | 
  Peutz-Jeghers disease or syndrome  759.6 | 
   | 
   | 
   | 
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