- B99Z -

Functional GI and motility disorders which affect the upper GI tract from the esophagus to the stomach. Functional GI and motility disorders which affect the lower GI tract from the small intestinebowel to the large intestinebowel or colon to the rectum. Many other disorders can affect the digestive tract with uniquely identifying features which differentiate them from functional GI or motility disorders. Motility is a term used to describe the contraction of the muscles that mix and propel contents in the gastrointestinal GI tract.