| T40.1X1 | Poisoning by heroin, accidental (unintentional) | NON-BILLABLE CODE |
| T40.1X1A | Poisoning by heroin, accidental (unintentional), initial encounter | BILLABLE CODE |
| T40.1X1D | Poisoning by heroin, accidental (unintentional), subsequent encounter | BILLABLE CODE |
| T40.1X1S | Poisoning by heroin, accidental (unintentional), sequela | BILLABLE CODE |
| T40.1X2 | Poisoning by heroin, intentional self-harm | NON-BILLABLE CODE |
| T40.1X2A | Poisoning by heroin, intentional self-harm, initial encounter | BILLABLE CODE |
| T40.1X2D | Poisoning by heroin, intentional self-harm, subsequent encounter | BILLABLE CODE |
| T40.1X2S | Poisoning by heroin, intentional self-harm, sequela | BILLABLE CODE |
| T40.1X3 | Poisoning by heroin, assault | NON-BILLABLE CODE |
| T40.1X3A | Poisoning by heroin, assault, initial encounter | BILLABLE CODE |
| T40.1X3D | Poisoning by heroin, assault, subsequent encounter | BILLABLE CODE |
| T40.1X3S | Poisoning by heroin, assault, sequela | BILLABLE CODE |
| T40.1X4 | Poisoning by heroin, undetermined | NON-BILLABLE CODE |
| T40.1X4A | Poisoning by heroin, undetermined, initial encounter | BILLABLE CODE |
| T40.1X4D | Poisoning by heroin, undetermined, subsequent encounter | BILLABLE CODE |
| T40.1X4S | Poisoning by heroin, undetermined, sequela | BILLABLE CODE |
