subcostal plane subcostal plane the subcostal plane is a transverse plane which bisects the body at the level of the 10th costal margin and the vertebra body l3. subcostal planefront of abdomen, showing surface markings for duodenum, pancreas, and kidneys. (subcostal plane is approximately at level of "c")front view of the thoracic and abdominal viscera. a. median plane. b. lateral planes. c. trans tubercular plane. d. subcostal plane. e. transpyloric plane.detailsidentifierslatinplanum subcostaleta98a01.2.00.008ta254fma14610anatomical terminology