S36.420 Contusion of duodenumNon-billable ICD-10-CM code.
S38.1 Crushing injury of abdomen, lower back, and pelvis ("injury to intra-abdominal organs (S36.-)")S36.419 Primary blast injury of unspecified part of small intestineS36.419A Primary blast injury of unspecified part of small intestine, initial encounterS36.419D Primary blast injury of unspecified part of small intestine, subsequent encounterS36.419S Primary blast injury of unspecified part of small intestine, sequelaS36.42 Contusion of small intestineS36.420 Contusion of duodenum (this code)S36.420A Contusion of duodenum, initial encounterS36.420D Contusion of duodenum, subsequent encounterS36.420S Contusion of duodenum, sequelaS36.428 Contusion of other part of small intestineS36.428A Contusion of other part of small intestine, initial encounter