ICD-9-CM

540 Acute appendicitis
540.0: With generalized peritonitis Appendicitis (acute) with: perforation, peritonitis (generalized), rupture: fulminating gangrenous obstructive Cecitis (acute) with: perforation, peritonitis (generalized), rupture Rupture of appendix Excludes: acute appendicitis with peritoneal abscess (540.1)
540.1: With peritoneal abscess Abscess of appendix With generalized peritonitis
540.9: Without mention of peritonitis Acute: appendicitis without mention of perforation, peritonitis, or rupture: fulminating gangrenous inflamed obstructive cecitis without mention of perforation, peritonitis, or rupture

540 Acute appendicitis

Appendicitis (acute) with: perforation, peritonitis (generalized), rupture:

fulminating

gangrenous

obstructive

Cecitis (acute) with: perforation, peritonitis (generalized), rupture

Rupture of appendix

Excludes:

acute appendicitis with peritoneal abscess (540.1)

Abscess of appendix

With generalized peritonitis

Acute:

appendicitis without mention of perforation, peritonitis, or rupture:

fulminating

gangrenous

inflamed

obstructive

cecitis without mention of perforation, peritonitis, or rupture

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