Other acute appendicitis without perforation or gangrene

This code signifies an acute inflammation of the appendix that does not involve rupture (perforation) or tissue death (gangrene). It encompasses various forms of acute appendicitis that don't meet the criteria for specific subtypes like acute appendicitis with generalized peritonitis.

Use this code when documentation clearly indicates acute appendicitis without mention of perforation, rupture, or gangrenous changes. This often applies to early-stage appendicitis or cases where surgical findings confirm inflammation without these severe complications. Supporting documentation includes operative reports, pathology reports, and physician notes detailing the absence of perforation or gangrene.

• Differentiate carefully from codes indicating perforation (K35.2-) or gangrene (K35.3-).
• Ensure documentation explicitly rules out perforation or gangrene; if ambiguous, query the provider.
• This code is often used for uncomplicated acute appendicitis identified during surgery.