| T59.7X | Toxic effect of carbon dioxide | NON-BILLABLE CODE |
| T59.7X1 | Toxic effect of carbon dioxide, accidental (unintentional) | NON-BILLABLE CODE |
| T59.7X1A | Toxic effect of carbon dioxide, accidental (unintentional), initial encounter | BILLABLE CODE |
| T59.7X1D | Toxic effect of carbon dioxide, accidental (unintentional), subsequent encounter | BILLABLE CODE |
| T59.7X1S | Toxic effect of carbon dioxide, accidental (unintentional), sequela | BILLABLE CODE |
| T59.7X2 | Toxic effect of carbon dioxide, intentional self-harm | NON-BILLABLE CODE |
| T59.7X2A | Toxic effect of carbon dioxide, intentional self-harm, initial encounter | BILLABLE CODE |
| T59.7X2D | Toxic effect of carbon dioxide, intentional self-harm, subsequent encounter | BILLABLE CODE |
| T59.7X2S | Toxic effect of carbon dioxide, intentional self-harm, sequela | BILLABLE CODE |
| T59.7X3 | Toxic effect of carbon dioxide, assault | NON-BILLABLE CODE |
| T59.7X3A | Toxic effect of carbon dioxide, assault, initial encounter | BILLABLE CODE |
| T59.7X3D | Toxic effect of carbon dioxide, assault, subsequent encounter | BILLABLE CODE |
| T59.7X3S | Toxic effect of carbon dioxide, assault, sequela | BILLABLE CODE |
| T59.7X4 | Toxic effect of carbon dioxide, undetermined | NON-BILLABLE CODE |
| T59.7X4A | Toxic effect of carbon dioxide, undetermined, initial encounter | BILLABLE CODE |
| T59.7X4D | Toxic effect of carbon dioxide, undetermined, subsequent encounter | BILLABLE CODE |
| T59.7X4S | Toxic effect of carbon dioxide, undetermined, sequela | BILLABLE CODE |
