540.9
Acute appendicitis without mention of peritonitis
The ICD-9 code for acute appendicitis without mention of peritonitis is 540.9.
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 540.9 →