ICD-10 coding reflects both impaired-peristalsis senses and mechanical-obstruction senses of the term as modified by various adjectives. Some authors have argued for trying to reserve the term for the impaired-peristalsis senses, under which prescription certain older terms such as "gallstone<unk> " and "meconium<unk> ", although now technically misnomers, are still accepted as correct owing to their long-established usage.
Ileus
Gallstone ileus
Ileitis
Devon colic
Pancreatic fistula
Acute pancreatitis
Gallstone
Biliary colic