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K35.80

Billable

Unspecified acute appendicitis

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 where the specific complications (such as perforation, infection spread, or tissue death) are not specified.

Coding Tips

  • •This is a default code when acute appendicitis is documented but severity/complications are unclear
  • •Query the provider for additional details to assign a more specific K35.2x or K35.3x code if possible

Code Hierarchy

└K35Acute appendicitis└K35.8Other and unspecified acute appendicitis└K35.80Unspecified acute appendicitis
└K35.80Unspecified acute appendicitis

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