| S36.420 | Contusion of duodenum | NON-BILLABLE CODE |
| S36.420A | Contusion of duodenum, initial encounter | BILLABLE CODE |
| S36.420D | Contusion of duodenum, subsequent encounter | BILLABLE CODE |
| S36.420S | Contusion of duodenum, sequela | BILLABLE CODE |
| S36.428 | Contusion of other part of small intestine | NON-BILLABLE CODE |
| S36.428A | Contusion of other part of small intestine, initial encounter | BILLABLE CODE |
| S36.428D | Contusion of other part of small intestine, subsequent encounter | BILLABLE CODE |
| S36.428S | Contusion of other part of small intestine, sequela | BILLABLE CODE |
| S36.429 | Contusion of unspecified part of small intestine | NON-BILLABLE CODE |
| S36.429A | Contusion of unspecified part of small intestine, initial encounter | BILLABLE CODE |
| S36.429D | Contusion of unspecified part of small intestine, subsequent encounter | BILLABLE CODE |
| S36.429S | Contusion of unspecified part of small intestine, sequela | BILLABLE CODE |
