intubation intubation intubation (sometimes entubation) is a medical procedure involving the insertion of a tube into the body. patients are generally anesthetized beforehand. examples include tracheal intubation, and the balloon tamponade with a sengstaken–blakemore tube (a tube into the gastrointestinal tract). this term often refers specifically to tracheal intubation. intubationicd-9-cm96.0meshd007440 examples catheterization nasogastric intubation tracheal intubation