K35.33

K35.33

Billable

Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Acute inflammation of the appendix with rupture, localized abdominal infection, tissue death, and a pus collection.

Coding Tips

•This is the most severe localized peritonitis variant; requires documentation of perforation, gangrene, AND abscess
•Verify abscess is present on imaging or noted in operative findings to differentiate from K35.32

Code Hierarchy

└K35Acute appendicitis └K35.3Acute appendicitis with localized peritonitis └K35.33Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess

└K35.33Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess