K35.31

✓ Billable

Acute appendicitis with localized peritonitis and gangrene, without perforation

Diseases of the digestive system (K00-K95)

✅ No additional coding notes for K35.31

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Code Information

CodeK35.31

BillableYes

ParentK35.3

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)