| Y38.4X | Terrorism involving firearms | NON-BILLABLE CODE |
| Y38.4X1 | Terrorism involving firearms, public safety official injured | NON-BILLABLE CODE |
| Y38.4X1A | Terrorism involving firearms, public safety official injured, initial encounter | BILLABLE CODE |
| Y38.4X1D | Terrorism involving firearms, public safety official injured, subsequent encounter | BILLABLE CODE |
| Y38.4X1S | Terrorism involving firearms, public safety official injured, sequela | BILLABLE CODE |
| Y38.4X2 | Terrorism involving firearms, civilian injured | NON-BILLABLE CODE |
| Y38.4X2A | Terrorism involving firearms, civilian injured, initial encounter | BILLABLE CODE |
| Y38.4X2D | Terrorism involving firearms, civilian injured, subsequent encounter | BILLABLE CODE |
| Y38.4X2S | Terrorism involving firearms, civilian injured, sequela | BILLABLE CODE |
| Y38.4X3 | Terrorism involving firearms, terrorist injured | NON-BILLABLE CODE |
| Y38.4X3A | Terrorism involving firearms, terrorist injured, initial encounter | BILLABLE CODE |
| Y38.4X3D | Terrorism involving firearms, terrorist injured, subsequent encounter | BILLABLE CODE |
| Y38.4X3S | Terrorism involving firearms, terrorist injured, sequela | BILLABLE CODE |
