| T36.4X1 | Poisoning by tetracyclines, accidental (unintentional) | NON-BILLABLE CODE |
| T36.4X1A | Poisoning by tetracyclines, accidental (unintentional), initial encounter | BILLABLE CODE |
| T36.4X1D | Poisoning by tetracyclines, accidental (unintentional), subsequent encounter | BILLABLE CODE |
| T36.4X1S | Poisoning by tetracyclines, accidental (unintentional), sequela | BILLABLE CODE |
| T36.4X2 | Poisoning by tetracyclines, intentional self-harm | NON-BILLABLE CODE |
| T36.4X2A | Poisoning by tetracyclines, intentional self-harm, initial encounter | BILLABLE CODE |
| T36.4X2D | Poisoning by tetracyclines, intentional self-harm, subsequent encounter | BILLABLE CODE |
| T36.4X2S | Poisoning by tetracyclines, intentional self-harm, sequela | BILLABLE CODE |
| T36.4X3 | Poisoning by tetracyclines, assault | NON-BILLABLE CODE |
| T36.4X3A | Poisoning by tetracyclines, assault, initial encounter | BILLABLE CODE |
| T36.4X3D | Poisoning by tetracyclines, assault, subsequent encounter | BILLABLE CODE |
| T36.4X3S | Poisoning by tetracyclines, assault, sequela | BILLABLE CODE |
| T36.4X4 | Poisoning by tetracyclines, undetermined | NON-BILLABLE CODE |
| T36.4X4A | Poisoning by tetracyclines, undetermined, initial encounter | BILLABLE CODE |
| T36.4X4D | Poisoning by tetracyclines, undetermined, subsequent encounter | BILLABLE CODE |
| T36.4X4S | Poisoning by tetracyclines, undetermined, sequela | BILLABLE CODE |
| T36.4X5 | Adverse effect of tetracyclines | NON-BILLABLE CODE |
| T36.4X5A | Adverse effect of tetracyclines, initial encounter | BILLABLE CODE |
| T36.4X5D | Adverse effect of tetracyclines, subsequent encounter | BILLABLE CODE |
| T36.4X5S | Adverse effect of tetracyclines, sequela | BILLABLE CODE |
| T36.4X6 | Underdosing of tetracyclines | NON-BILLABLE CODE |
| T36.4X6A | Underdosing of tetracyclines, initial encounter | BILLABLE CODE |
| T36.4X6D | Underdosing of tetracyclines, subsequent encounter | BILLABLE CODE |
| T36.4X6S | Underdosing of tetracyclines, sequela | BILLABLE CODE |
