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K35.20

⚠ Non-billable (Header)

Acute appendicitis with generalized peritonitis, without abscess

Diseases of the digestive system (K00-K95)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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✅ No additional coding notes for K35.20

Child Codes (3)

K35.200Acute appendicitis with generalized peritonitis, without perforation or abscessK35.201Acute appendicitis with generalized peritonitis, with perforation, without abscessK35.209Acute appendicitis with generalized peritonitis, without abscess, unspecified as to perforation

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Code Information

CodeK35.20
BillableNo — Header code
ParentK35.2
CategoryDiseases of the digestive system (K00-K95)
Excludes10 rule(s)
Excludes20 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)