| T45.521 | Poisoning by antithrombotic drugs, accidental (unintentional) | NON-BILLABLE CODE |
| T45.521A | Poisoning by antithrombotic drugs, accidental (unintentional), initial encounter | BILLABLE CODE |
| T45.521D | Poisoning by antithrombotic drugs, accidental (unintentional), subsequent encounter | BILLABLE CODE |
| T45.521S | Poisoning by antithrombotic drugs, accidental (unintentional), sequela | BILLABLE CODE |
| T45.522 | Poisoning by antithrombotic drugs, intentional self-harm | NON-BILLABLE CODE |
| T45.522A | Poisoning by antithrombotic drugs, intentional self-harm, initial encounter | BILLABLE CODE |
| T45.522D | Poisoning by antithrombotic drugs, intentional self-harm, subsequent encounter | BILLABLE CODE |
| T45.522S | Poisoning by antithrombotic drugs, intentional self-harm, sequela | BILLABLE CODE |
| T45.523 | Poisoning by antithrombotic drugs, assault | NON-BILLABLE CODE |
| T45.523A | Poisoning by antithrombotic drugs, assault, initial encounter | BILLABLE CODE |
| T45.523D | Poisoning by antithrombotic drugs, assault, subsequent encounter | BILLABLE CODE |
| T45.523S | Poisoning by antithrombotic drugs, assault, sequela | BILLABLE CODE |
| T45.524 | Poisoning by antithrombotic drugs, undetermined | NON-BILLABLE CODE |
| T45.524A | Poisoning by antithrombotic drugs, undetermined, initial encounter | BILLABLE CODE |
| T45.524D | Poisoning by antithrombotic drugs, undetermined, subsequent encounter | BILLABLE CODE |
| T45.524S | Poisoning by antithrombotic drugs, undetermined, sequela | BILLABLE CODE |
| T45.525 | Adverse effect of antithrombotic drugs | NON-BILLABLE CODE |
| T45.525A | Adverse effect of antithrombotic drugs, initial encounter | BILLABLE CODE |
| T45.525D | Adverse effect of antithrombotic drugs, subsequent encounter | BILLABLE CODE |
| T45.525S | Adverse effect of antithrombotic drugs, sequela | BILLABLE CODE |
| T45.526 | Underdosing of antithrombotic drugs | NON-BILLABLE CODE |
| T45.526A | Underdosing of antithrombotic drugs, initial encounter | BILLABLE CODE |
| T45.526D | Underdosing of antithrombotic drugs, subsequent encounter | BILLABLE CODE |
| T45.526S | Underdosing of antithrombotic drugs, sequela | BILLABLE CODE |
