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K35.31

Billable

Acute appendicitis with localized peritonitis and gangrene, without perforation

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 localized abdominal infection and tissue death of the appendix, but without rupture.

Coding Tips

  • •Gangrene indicates tissue necrosis; ensure this is documented separately from perforation
  • •Confirm no perforation is present; if perforation exists with gangrene, use K35.32 or K35.33

Code Hierarchy

└K35Acute appendicitis└K35.3Acute appendicitis with localized peritonitis└K35.31Acute appendicitis with localized peritonitis and gangrene, without perforation
└K35.31Acute appendicitis with localized peritonitis and gangrene, without perforation

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