2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Other Diseases Of Intestines And Peritoneum 560-569 > 2006 ICD-9-CM Diagnosis 567 Peritonitis View the most recent version of ICD-9-CM 567 INFLAMMATION of the PERITONEUM lining the ABDOMINAL CAVITY as the result of infectious, autoimmune, or chemical processes. Primary peritonitis is due to infection of the PERITONEAL CAVITY via hematogenous or lymphatic spread and without intra-abdominal source. Secondary peritonitis arises from the ABDOMINAL CAVITY itself through RUPTURE or ABSCESS of intra-abdominal organs. 567 is a non-specific code that cannot be used to specify a diagnosis 567 Excludes peritonitis: benign paroxysmal (277.3) pelvic, female (614.5, 614.7) periodic familial (277.3) puerperal (670) with or following: abortion (634-638 with .0, 639.0) appendicitis (540.0-540.1) ectopic or molar pregnancy (639.0)