| Y37.440 | Military operations involving unarmed hand to hand combat, military personnel | NON-BILLABLE CODE |
| Y37.440A | Military operations involving unarmed hand to hand combat, military personnel, initial encounter | BILLABLE CODE |
| Y37.440D | Military operations involving unarmed hand to hand combat, military personnel, subsequent encounter | BILLABLE CODE |
| Y37.440S | Military operations involving unarmed hand to hand combat, military personnel, sequela | BILLABLE CODE |
| Y37.441 | Military operations involving unarmed hand to hand combat, civilian | NON-BILLABLE CODE |
| Y37.441A | Military operations involving unarmed hand to hand combat, civilian, initial encounter | BILLABLE CODE |
| Y37.441D | Military operations involving unarmed hand to hand combat, civilian, subsequent encounter | BILLABLE CODE |
| Y37.441S | Military operations involving unarmed hand to hand combat, civilian, sequela | BILLABLE CODE |
