ICD-10-CM > K00-K95 > K35-K38 > K35 > K35.2 > K35.21 > K35.210 K35.210 Acute appendicitis with generalized peritonitis, without perforation, with abscess Billable/Specific Copy Code Copy Description Applicable To (Acute) appendicitis with generalized peritonitis without rupture or perforation of appendix, with abscess