Gastrointestinal<unk>  may be classified based upon the etiology into instrumental<unk> ,<unk>  due to systemic diseases,<unk>  due to inflammatory causes, medications and neoplasms. Gastrointestinal<unk>  may also be divided based on age of the patient into adult type and neonatal type<unk> .
Gastrointestinal perforation classification
Bowel obstruction classification
Mesenteric ischemia classification
Lower gastrointestinal bleeding classification
Diverticulitis classification
Secondary peritonitis classification
Ischemic colitis classification
Spontaneous bacterial peritonitis classification