| T58.8X | Toxic effect of carbon monoxide from other source | NON-BILLABLE CODE |
| T58.8X1 | Toxic effect of carbon monoxide from other source, accidental (unintentional) | NON-BILLABLE CODE |
| T58.8X1A | Toxic effect of carbon monoxide from other source, accidental (unintentional), initial encounter | BILLABLE CODE |
| T58.8X1D | Toxic effect of carbon monoxide from other source, accidental (unintentional), subsequent encounter | BILLABLE CODE |
| T58.8X1S | Toxic effect of carbon monoxide from other source, accidental (unintentional), sequela | BILLABLE CODE |
| T58.8X2 | Toxic effect of carbon monoxide from other source, intentional self-harm | NON-BILLABLE CODE |
| T58.8X2A | Toxic effect of carbon monoxide from other source, intentional self-harm, initial encounter | BILLABLE CODE |
| T58.8X2D | Toxic effect of carbon monoxide from other source, intentional self-harm, subsequent encounter | BILLABLE CODE |
| T58.8X2S | Toxic effect of carbon monoxide from other source, intentional self-harm, sequela | BILLABLE CODE |
| T58.8X3 | Toxic effect of carbon monoxide from other source, assault | NON-BILLABLE CODE |
| T58.8X3A | Toxic effect of carbon monoxide from other source, assault, initial encounter | BILLABLE CODE |
| T58.8X3D | Toxic effect of carbon monoxide from other source, assault, subsequent encounter | BILLABLE CODE |
| T58.8X3S | Toxic effect of carbon monoxide from other source, assault, sequela | BILLABLE CODE |
| T58.8X4 | Toxic effect of carbon monoxide from other source, undetermined | NON-BILLABLE CODE |
| T58.8X4A | Toxic effect of carbon monoxide from other source, undetermined, initial encounter | BILLABLE CODE |
| T58.8X4D | Toxic effect of carbon monoxide from other source, undetermined, subsequent encounter | BILLABLE CODE |
| T58.8X4S | Toxic effect of carbon monoxide from other source, undetermined, sequela | BILLABLE CODE |
