K35.3
K35.3: Acute appendicitis with localized peritonitis
Non-billable headerICD-10-CM
K35.3 is a non-billable header ICD-10-CM code for acute appendicitis with localized peritonitis. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with K35.3
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead K35.3
4 child codes. Green means billable.
- K35.30Acute appendicitis with localized peritonitis, without perforation or gangrene
- K35.31Acute appendicitis with localized peritonitis and gangrene, without perforation
- K35.32Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess
- K35.33Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess