2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Appendicitis 540-543 > Acute Appendicitis 540.* > 2006 ICD-9-CM Diagnosis 540.9 Acute appendicitis without peritonitis View the most recent version of ICD-9-CM 540.9 540.9 is a specific code that can be used to specify a diagnosis 540.9 contains 1 index entry View the ICD-9-CM Volume 1 540.* hierarchy Alternate Terminology Acute: appendicitis without mention of perforation, peritonitis, or rupture: fulminating gangrenous inflamed obstructive cecitis without mention of perforation, peritonitis, or rupture  Index entries containing 540.9: Appendicitis 541 acute (catarrhal) (fulminating) (gangrenous) (inflammatory) (obstructive) (retrocecal) (suppurative) 540.9 with perforation, peritonitis, or rupture 540.0 with peritoneal abscess 540.1 peritoneal abscess 540.1