K35.31
K35.31: Acute appendicitis with localized peritonitis and gangrene, without perforation
Billable / specific codeICD-10-CM
K35.31 is a billable, specific ICD-10-CM code for acute appendicitis with localized peritonitis and gangrene, without perforation. It is valid for submission on a claim.
Check K35.31 with the rest of the claim: free scrubberOther codes that can never be billed with K35.31
Their own Excludes1 notes name this code, so the conflict is not listed above.
- K65Peritonitis
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
K35.31 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A55336Billing and Coding: Retroperitoneal Ultrasound
- A56421Billing and Coding: CT of the Abdomen and Pelvis
Alphabetic index entries that lead here
- Appendicitis›with›gangrene›with localized peritonitis
- Gangrene, gangrenous›appendix›with›peritonitis, localized
- Appendicitis›acute›specified NEC›with gangrene›with localized peritonitis
- Appendicitis›with›peritonitis NEC›localized›with›gangrene
- Appendicitis›acute›with›peritonitis NEC›localized›with›gangrene
Code history
Unchanged in every release from FY2024 to FY2027.