Intussusception may be classified into several subtypes based on location and etiology. According to location of intussusception it is classified into ileocolic, ileo-ileo-colic, jejuno-jejunal, jejuno-ileal, and colo-colic. According to etiology of intussusception it is classified into idiopathic or lead point (pathologic) types.

• Intussusception can be classified according to various parameters:-
  • Classification of intussusception based on its location:-
    • Ileocolic intussusception^[1]
      • 90% cases.
      • It involves the ileocecal junction.
    • Ileo-ileo-colic
    • Jejuno-jejunal
    • Jejuno-ileal
    • Colo-colic

• Classification based on etiology
  • Intussusception can be classified into 2 types based on etiology:
    • Idiopathic:
      • In the idiopathic type there is no clear trigger point.
      • Most commonly seen in children.
    • Lead point:
      • In the lead point type there is a clear pathologic trigger.
      • Most commonly seen in adults.