| Y37.520 | Military operations involving indirect blast effect of nuclear weapon, military personnel | NON-BILLABLE CODE |
| Y37.520A | Military operations involving indirect blast effect of nuclear weapon, military personnel, initial encounter | BILLABLE CODE |
| Y37.520D | Military operations involving indirect blast effect of nuclear weapon, military personnel, subsequent encounter | BILLABLE CODE |
| Y37.520S | Military operations involving indirect blast effect of nuclear weapon, military personnel, sequela | BILLABLE CODE |
| Y37.521 | Military operations involving indirect blast effect of nuclear weapon, civilian | NON-BILLABLE CODE |
| Y37.521A | Military operations involving indirect blast effect of nuclear weapon, civilian, initial encounter | BILLABLE CODE |
| Y37.521D | Military operations involving indirect blast effect of nuclear weapon, civilian, subsequent encounter | BILLABLE CODE |
| Y37.521S | Military operations involving indirect blast effect of nuclear weapon, civilian, sequela | BILLABLE CODE |
