ICD-10-CM > K00-K95 > K35-K38 > K35 > K35.2 K35.2 Acute appendicitis with generalized peritonitis Non-Billable/Non-Specific Codes K35.20Acute appendicitis with generalized peritonitis, without abscessK35.200Acute appendicitis with generalized peritonitis, without perforation or abscessK35.201Acute appendicitis with generalized peritonitis, with perforation, without abscessK35.209Acute appendicitis with generalized peritonitis, without abscess, unspecified as to perforationK35.21Acute appendicitis with generalized peritonitis, with abscessK35.210Acute appendicitis with generalized peritonitis, without perforation, with abscessK35.211Acute appendicitis with generalized peritonitis, with perforation and abscessK35.219Acute appendicitis with generalized peritonitis, with abscess, unspecified as to perforation