| T520X1S | Toxic effect of petroleum products, accidental (unintentional), sequela |
| T520X2 | Toxic effect of petroleum products, intentional self-harm |
| T520X2A | Toxic effect of petroleum products, intentional self-harm, initial encounter |
| T520X2D | Toxic effect of petroleum products, intentional self-harm, subsequent encounter |
| T520X2S | Toxic effect of petroleum products, intentional self-harm, sequela |
| T520X3 | Toxic effect of petroleum products, assault |
| T520X3A | Toxic effect of petroleum products, assault, initial encounter |
| T520X3D | Toxic effect of petroleum products, assault, subsequent encounter |
| T520X3S | Toxic effect of petroleum products, assault, sequela |
| T520X4 | Toxic effect of petroleum products, undetermined |
| T520X4A | Toxic effect of petroleum products, undetermined, initial encounter |
| T520X4D | Toxic effect of petroleum products, undetermined, subsequent encounter |
| T520X4S | Toxic effect of petroleum products, undetermined, sequela |
| T521 | Toxic effects of benzene |
| T521X | Toxic effects of benzene |
| T521X1 | Toxic effect of benzene, accidental (unintentional) |
| T521X1A | Toxic effect of benzene, accidental (unintentional), initial encounter |
| T521X1D | Toxic effect of benzene, accidental (unintentional), subsequent encounter |
| T521X1S | Toxic effect of benzene, accidental (unintentional), sequela Toxic effect of benzene, accidental (unintentional), sequela |
| T521X2 | Toxic effect of benzene, intentional self-harm |
| T521X2A | Toxic effect of benzene, intentional self-harm, initial encounter |
| T521X2D | Toxic effect of benzene, intentional self-harm, subsequent encounter |
| T521X2S | Toxic effect of benzene, intentional self-harm, sequela |
| T521X3 | Toxic effect of benzene, assault |
| T521X3A | Toxic effect of benzene, assault, initial encounter |
| T521X3D | Toxic effect of benzene, assault, subsequent encounter |
| T521X3S | Toxic effect of benzene, assault, sequela |
| T521X4 | Toxic effect of benzene, undetermined |
| T521X4A | Toxic effect of benzene, undetermined, initial encounter |
| T521X4D | Toxic effect of benzene, undetermined, subsequent encounter |
| T521X4S | Toxic effect of benzene, undetermined, sequela |
| T522 | Toxic effects of homologues of benzene |
| T522X | Toxic effects of homologues of benzene |
| T522X1 | Toxic effect of homologues of benzene, accidental (unintentional) |
| T522X1A | Toxic effect of homologues of benzene, accidental (unintentional), initial encounter |
| T522X1D | Toxic effect of homologues of benzene, accidental (unintentional), subsequent encounter |
| T522X1S | Toxic effect of homologues of benzene, accidental (unintentional), sequela |
| T522X2 | Toxic effect of homologues of benzene, intentional self-harm Toxic effect of homologues of benzene, intentional self-harm |
| T522X2A | Toxic effect of homologues of benzene, intentional self-harm, initial encounter |
| T522X2D | Toxic effect of homologues of benzene, intentional self-harm, subsequent encounter |
| T522X2S | Toxic effect of homologues of benzene, intentional self-harm, sequela |
| T522X3 | Toxic effect of homologues of benzene, assault |
| T522X3A | Toxic effect of homologues of benzene, assault, initial encounter |
| T522X3D | Toxic effect of homologues of benzene, assault, subsequent encounter |
| T522X3S | Toxic effect of homologues of benzene, assault, sequela |
| T522X4 | Toxic effect of homologues of benzene, undetermined |
| T522X4A | Toxic effect of homologues of benzene, undetermined, initial encounter |
| T522X4D | Toxic effect of homologues of benzene, undetermined, subsequent encounter |
| T522X4S | Toxic effect of homologues of benzene, undetermined, sequela Toxic effect of homologues of benzene, undetermined, sequela |
| T523 | Toxic effects of glycols |