K35.211
BillableAcute appendicitis with generalized peritonitis, with perforation and 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 the appendix rupturing, infection spreading throughout the abdominal lining, and a contained pocket of infection forming.
Coding Tips
- •This is the most severe appendicitis code; ensure documentation confirms both perforation and abscess are present
- •Review operative findings and imaging reports to confirm both complications before assigning this code
Code Hierarchy
└K35Acute appendicitis└K35.2Acute appendicitis with generalized peritonitis└K35.21Acute appendicitis with generalized peritonitis, with abscess└K35.211Acute appendicitis with generalized peritonitis, with perforation and abscess
└K35.211Acute appendicitis with generalized peritonitis, with perforation and abscess