| T59.0X1 | Toxic effect of nitrogen oxides, accidental (unintentional) | NON-BILLABLE CODE |
| T59.0X1A | Toxic effect of nitrogen oxides, accidental (unintentional), initial encounter | BILLABLE CODE |
| T59.0X1D | Toxic effect of nitrogen oxides, accidental (unintentional), subsequent encounter | BILLABLE CODE |
| T59.0X1S | Toxic effect of nitrogen oxides, accidental (unintentional), sequela | BILLABLE CODE |
| T59.0X2 | Toxic effect of nitrogen oxides, intentional self-harm | NON-BILLABLE CODE |
| T59.0X2A | Toxic effect of nitrogen oxides, intentional self-harm, initial encounter | BILLABLE CODE |
| T59.0X2D | Toxic effect of nitrogen oxides, intentional self-harm, subsequent encounter | BILLABLE CODE |
| T59.0X2S | Toxic effect of nitrogen oxides, intentional self-harm, sequela | BILLABLE CODE |
| T59.0X3 | Toxic effect of nitrogen oxides, assault | NON-BILLABLE CODE |
| T59.0X3A | Toxic effect of nitrogen oxides, assault, initial encounter | BILLABLE CODE |
| T59.0X3D | Toxic effect of nitrogen oxides, assault, subsequent encounter | BILLABLE CODE |
| T59.0X3S | Toxic effect of nitrogen oxides, assault, sequela | BILLABLE CODE |
| T59.0X4 | Toxic effect of nitrogen oxides, undetermined | NON-BILLABLE CODE |
| T59.0X4A | Toxic effect of nitrogen oxides, undetermined, initial encounter | BILLABLE CODE |
| T59.0X4D | Toxic effect of nitrogen oxides, undetermined, subsequent encounter | BILLABLE CODE |
| T59.0X4S | Toxic effect of nitrogen oxides, undetermined, sequela | BILLABLE CODE |
