| ICD-10 Code | Description |
| T42.3X1A | Poisoning by barbiturates, accidental (unintentional), initial encounter |
| T42.3X1D | Poisoning by barbiturates, accidental (unintentional), subsequent encounter |
| T42.3X1S | Poisoning by barbiturates, accidental (unintentional), sequela |
| T42.3X2A | Poisoning by barbiturates, intentional self-harm, initial encounter |
| T42.3X2D | Poisoning by barbiturates, intentional self-harm, subsequent encounter |
| T42.3X2S | Poisoning by barbiturates, intentional self-harm, sequela |
| T42.3X3A | Poisoning by barbiturates, assault, initial encounter |
| T42.3X3D | Poisoning by barbiturates, assault, subsequent encounter |
| T42.3X3S | Poisoning by barbiturates, assault, sequela |
| T42.3X4A | Poisoning by barbiturates, undetermined, initial encounter |
| T42.3X4D | Poisoning by barbiturates, undetermined, subsequent encounter |
| T42.3X4S | Poisoning by barbiturates, undetermined, sequela |
| T42.3X5A | Adverse effect of barbiturates, initial encounter |
| T42.3X5D | Adverse effect of barbiturates, subsequent encounter |
| T42.3X5S | Adverse effect of barbiturates, sequela |
| T42.3X6A | Underdosing of barbiturates, initial encounter |
| T42.3X6D | Underdosing of barbiturates, subsequent encounter |
| T42.3X6S | Underdosing of barbiturates, sequela |
