540.0
Acute appendicitis with generalized peritonitis
The ICD-9 code for acute appendicitis with generalized peritonitis is 540.0.
Legacy code — retired October 1, 2015ICD-10-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents.
View ICD-9 → ICD-10 crosswalk for 540.0 →