ICD-11

Hindrance of the passage of luminal contents in the small intestine. Obstruction of the small intestine can be partial or complete, and caused by intrinsic or extrinsic factors. Simple obstruction is associated with diminished or stopped flow of luminal contents. Strangulating obstruction is associated with impaired blood flow to the small intestine in addition to obstructed flow of luminal contents.

Small bowel obstruction may result when a substance such as gallstone or enterolith is too large to traverse the small intestine, especially at the ileocecal valve.