| T56.811 | Toxic effect of thallium, accidental (unintentional) | NON-BILLABLE CODE |
| T56.811A | Toxic effect of thallium, accidental (unintentional), initial encounter | BILLABLE CODE |
| T56.811D | Toxic effect of thallium, accidental (unintentional), subsequent encounter | BILLABLE CODE |
| T56.811S | Toxic effect of thallium, accidental (unintentional), sequela | BILLABLE CODE |
| T56.812 | Toxic effect of thallium, intentional self-harm | NON-BILLABLE CODE |
| T56.812A | Toxic effect of thallium, intentional self-harm, initial encounter | BILLABLE CODE |
| T56.812D | Toxic effect of thallium, intentional self-harm, subsequent encounter | BILLABLE CODE |
| T56.812S | Toxic effect of thallium, intentional self-harm, sequela | BILLABLE CODE |
| T56.813 | Toxic effect of thallium, assault | NON-BILLABLE CODE |
| T56.813A | Toxic effect of thallium, assault, initial encounter | BILLABLE CODE |
| T56.813D | Toxic effect of thallium, assault, subsequent encounter | BILLABLE CODE |
| T56.813S | Toxic effect of thallium, assault, sequela | BILLABLE CODE |
| T56.814 | Toxic effect of thallium, undetermined | NON-BILLABLE CODE |
| T56.814A | Toxic effect of thallium, undetermined, initial encounter | BILLABLE CODE |
| T56.814D | Toxic effect of thallium, undetermined, subsequent encounter | BILLABLE CODE |
| T56.814S | Toxic effect of thallium, undetermined, sequela | BILLABLE CODE |
