1. K65 Peritonitis

    Use Additional code (B95-B97), to identify infectious agent, if known

    Excludes1

    • acute appendicitis with generalized peritonitis (K35.2-)
    • aseptic peritonitis (T81.6)
    • benign paroxysmal peritonitis (E85.0)
    • chemical peritonitis (T81.6)
    • gonococcal peritonitis (A54.85)
    • neonatal peritonitis (P78.0-P78.1)
    • pelvic peritonitis, female (N73.3-N73.5)
    • periodic familial peritonitis (E85.0)
    • peritonitis due to talc or other foreign substance (T81.6)
    • peritonitis in chlamydia (A74.81)
    • peritonitis in diphtheria (A36.89)
    • peritonitis in syphilis (late) (A52.74)
    • peritonitis in tuberculosis (A18.31)
    • peritonitis with or following abortion or ectopic or molar pregnancy (O00-O07, O08.0)
    • peritonitis with or following appendicitis (K35.-)
    • puerperal peritonitis (O85)
    • retroperitoneal infections (K68.-)
    1. K65.0 Generalized (acute) peritonitis

      Inclusion term(s):

      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    2. K65.1 Peritoneal abscess

      Inclusion term(s):

      • Abdominopelvic abscess
      • Abscess (of) omentum
      • Abscess (of) peritoneum
      • Mesenteric abscess
      • Retrocecal abscess
      • Subdiaphragmatic abscess
      • Subhepatic abscess
      • Subphrenic abscess
    3. K65.2 Spontaneous bacterial peritonitis

    4. K65.3 Choleperitonitis

      Inclusion term(s):

      • Peritonitis due to bile
    5. K65.4 Sclerosing mesenteritis

      Inclusion term(s):

      • Fat necrosis of peritoneum
      • (Idiopathic) sclerosing mesenteric fibrosis
      • Mesenteric lipodystrophy
      • Mesenteric panniculitis
      • Retractile mesenteritis
    6. K65.8 Other peritonitis

      Inclusion term(s):

      • Chronic proliferative peritonitis
      • Peritonitis due to urine
    7. K65.9 Peritonitis, unspecified

      Inclusion term(s):

      • Bacterial peritonitis NOS
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.