K35.211

✓ Billable

Acute appendicitis with generalized peritonitis, with perforation and abscess

Diseases of the digestive system (K00-K95)

Also Known As

Appendicitis (acute) with generalized (diffuse) peritonitis following rupture or perforation of appendix, with abscess

✅ No additional coding notes for K35.211

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Code Information

CodeK35.211

BillableYes

CategoryDiseases of the digestive system (K00-K95)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)