| Pelger-Huët anomaly or syndrome (hereditary hyposegmentation) 288.2 | 
  | Peliosis (rheumatica) 287.0 | 
  | Pelizaeus-Merzbacher | 
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  | Pellagra (alcoholic or with alcoholism) 265.2 | 
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  | Pellagra-cerebellar-ataxia-renal aminoaciduria syndrome 270.0 | 
  | Pellegrini's disease (calcification, knee joint) 726.62 | 
  | Pellegrini (-Stieda) disease or syndrome (calcification, knee joint) 726.62 | 
  | Pellizzi's syndrome (pineal) 259.8 | 
  | Pelvic - see also condition | 
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  | Pelviperitonitis | 
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  | Pelvis, pelvic - see also condition or type | 
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  | Pendred's syndrome (familial goiter with deaf-mutism) 243 | 
  | Pendulous | 
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  | Penetrating wound - see also Wound, open, by site | 
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  | Penetration, pregnant uterus by instrument | 
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  | Penfield's syndrome (see also Epilepsy) 345.5 | 
  | Penicilliosis of lung 117.3 | 
  | Penis - see condition | 
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  | Pentalogy (of Fallot) 745.2 | 
  | Pentosuria (benign) (essential) 271.8 | 
  | Peptic acid disease 536.8 | 
  | Peregrinating patient V65.2 | 
  | Perforated - see Perforation | 
  | Perforation, perforative (nontraumatic) | 
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  | Periadenitis mucosa necrotica recurrens 528.2 | 
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  | Periappendicitis (acute) (see also Appendicitis) 541 | 
  | Periarteritis (disseminated) (infectious) (necrotizing) (nodosa) 446.0 | 
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  | Periarthrosis (angioneural) - see Periarthritis | 
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  | Pericapsulitis, adhesive (shoulder) 726.0 | 
  | Pericarditis (granular) (with decompensation) (with effusion) 423.9 | 
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  | Pericardium, pericardial - see condition | 
  | Pericellulitis (see also Cellulitis) 682.9 | 
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  | Pericholecystitis (see also Cholecystitis) 575.10 | 
  | Perichondritis | 
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  | Pericoronitis (chronic) 523.40 | 
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  | Pericystitis (see also Cystitis) 595.9 | 
  | Pericytoma (M9150/1) - see also Neoplasm, connective tissue, uncertain behavior | 
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