K35.3 Acute appendicitis with localized peritonitisNon-billable header with 4 child codes.
K35.30 Acute appendicitis with localized peritonitis, without perforation or gangreneK35.31 Acute appendicitis with localized peritonitis and gangrene, without perforationK35.32 Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscessK35.33 Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess540.1 Acute appendicitis with peritoneal abscess (approximate)K37 Unspecified appendicitis ("unspecified appendicitis with peritonitis (K35.2-, K35.3-)")K63.0 Abscess of intestine ("abscess of appendix (K35.3-)")K63.1 Perforation of intestine (nontraumatic) ("perforation (nontraumatic) of appendix (K35.2-, K35.3-)")K65 Peritonitis ("peritonitis with or following appendicitis (K35.-)")K35.209 Acute appendicitis with generalized peritonitis, without abscess, unspecified as to perforationK35.21 Acute appendicitis with generalized peritonitis, with abscessK35.210 Acute appendicitis with generalized peritonitis, without perforation, with abscessK35.211 Acute appendicitis with generalized peritonitis, with perforation and abscessK35.219 Acute appendicitis with generalized peritonitis, with abscess, unspecified as to perforationK35.3 Acute appendicitis with localized peritonitis (this code)K35.30 Acute appendicitis with localized peritonitis, without perforation or gangreneK35.31 Acute appendicitis with localized peritonitis and gangrene, without perforationK35.32 Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscessK35.33 Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscessK35.8 Other and unspecified acute appendicitis