Is T45 a billable code?
No. T45 is a header code that groups 252 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T45: Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T45 groups related diagnoses under poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T45
- T45.0X1APoisoning by antiallergic and antiemetic drugs, accidental (unintentional), initial encounter
- T45.0X1DPoisoning by antiallergic and antiemetic drugs, accidental (unintentional), subsequent encounter
- T45.0X1SPoisoning by antiallergic and antiemetic drugs, accidental (unintentional), sequela
- T45.0X2APoisoning by antiallergic and antiemetic drugs, intentional self-harm, initial encounter
- T45.0X2DPoisoning by antiallergic and antiemetic drugs, intentional self-harm, subsequent encounter
- T45.0X2SPoisoning by antiallergic and antiemetic drugs, intentional self-harm, sequela
- T45.0X3APoisoning by antiallergic and antiemetic drugs, assault, initial encounter
- T45.0X3DPoisoning by antiallergic and antiemetic drugs, assault, subsequent encounter
- T45.0X3SPoisoning by antiallergic and antiemetic drugs, assault, sequela
- T45.0X4APoisoning by antiallergic and antiemetic drugs, undetermined, initial encounter
- T45.0X4DPoisoning by antiallergic and antiemetic drugs, undetermined, subsequent encounter
- T45.0X4SPoisoning by antiallergic and antiemetic drugs, undetermined, sequela
- T45.0X5AAdverse effect of antiallergic and antiemetic drugs, initial encounter
- T45.0X5DAdverse effect of antiallergic and antiemetic drugs, subsequent encounter
- T45.0X5SAdverse effect of antiallergic and antiemetic drugs, sequela
- T45.0X6AUnderdosing of antiallergic and antiemetic drugs, initial encounter
- T45.0X6DUnderdosing of antiallergic and antiemetic drugs, subsequent encounter
- T45.0X6SUnderdosing of antiallergic and antiemetic drugs, sequela
- T45.1X1APoisoning by antineoplastic and immunosuppressive drugs, accidental (unintentional), initial encounter
- T45.1X1DPoisoning by antineoplastic and immunosuppressive drugs, accidental (unintentional), subsequent encounter
- T45.1X1SPoisoning by antineoplastic and immunosuppressive drugs, accidental (unintentional), sequela
- T45.1X2APoisoning by antineoplastic and immunosuppressive drugs, intentional self-harm, initial encounter
- T45.1X2DPoisoning by antineoplastic and immunosuppressive drugs, intentional self-harm, subsequent encounter
- T45.1X2SPoisoning by antineoplastic and immunosuppressive drugs, intentional self-harm, sequela
- T45.1X3APoisoning by antineoplastic and immunosuppressive drugs, assault, initial encounter
- T45.1X3DPoisoning by antineoplastic and immunosuppressive drugs, assault, subsequent encounter
- T45.1X3SPoisoning by antineoplastic and immunosuppressive drugs, assault, sequela
- T45.1X4APoisoning by antineoplastic and immunosuppressive drugs, undetermined, initial encounter
- T45.1X4DPoisoning by antineoplastic and immunosuppressive drugs, undetermined, subsequent encounter
- T45.1X4SPoisoning by antineoplastic and immunosuppressive drugs, undetermined, sequela
- T45.1X5AAdverse effect of antineoplastic and immunosuppressive drugs, initial encounter
- T45.1X5DAdverse effect of antineoplastic and immunosuppressive drugs, subsequent encounter
- T45.1X5SAdverse effect of antineoplastic and immunosuppressive drugs, sequela
- T45.1X6AUnderdosing of antineoplastic and immunosuppressive drugs, initial encounter
- T45.1X6DUnderdosing of antineoplastic and immunosuppressive drugs, subsequent encounter
- T45.1X6SUnderdosing of antineoplastic and immunosuppressive drugs, sequela
- T45.2X1APoisoning by vitamins, accidental (unintentional), initial encounter
- T45.2X1DPoisoning by vitamins, accidental (unintentional), subsequent encounter
- T45.2X1SPoisoning by vitamins, accidental (unintentional), sequela
- T45.2X2APoisoning by vitamins, intentional self-harm, initial encounter
- T45.2X2DPoisoning by vitamins, intentional self-harm, subsequent encounter
- T45.2X2SPoisoning by vitamins, intentional self-harm, sequela
- T45.2X3APoisoning by vitamins, assault, initial encounter
- T45.2X3DPoisoning by vitamins, assault, subsequent encounter
- T45.2X3SPoisoning by vitamins, assault, sequela
- T45.2X4APoisoning by vitamins, undetermined, initial encounter
- T45.2X4DPoisoning by vitamins, undetermined, subsequent encounter
- T45.2X4SPoisoning by vitamins, undetermined, sequela
- T45.2X5AAdverse effect of vitamins, initial encounter
- T45.2X5DAdverse effect of vitamins, subsequent encounter
- T45.2X5SAdverse effect of vitamins, sequela
- T45.2X6AUnderdosing of vitamins, initial encounter
- T45.2X6DUnderdosing of vitamins, subsequent encounter
- T45.2X6SUnderdosing of vitamins, sequela
- T45.3X1APoisoning by enzymes, accidental (unintentional), initial encounter
- T45.3X1DPoisoning by enzymes, accidental (unintentional), subsequent encounter
- T45.3X1SPoisoning by enzymes, accidental (unintentional), sequela
- T45.3X2APoisoning by enzymes, intentional self-harm, initial encounter
- T45.3X2DPoisoning by enzymes, intentional self-harm, subsequent encounter
- T45.3X2SPoisoning by enzymes, intentional self-harm, sequela
- T45.3X3APoisoning by enzymes, assault, initial encounter
- T45.3X3DPoisoning by enzymes, assault, subsequent encounter
- T45.3X3SPoisoning by enzymes, assault, sequela
- T45.3X4APoisoning by enzymes, undetermined, initial encounter
- T45.3X4DPoisoning by enzymes, undetermined, subsequent encounter
- T45.3X4SPoisoning by enzymes, undetermined, sequela
- T45.3X5AAdverse effect of enzymes, initial encounter
- T45.3X5DAdverse effect of enzymes, subsequent encounter
- T45.3X5SAdverse effect of enzymes, sequela
- T45.3X6AUnderdosing of enzymes, initial encounter
- T45.3X6DUnderdosing of enzymes, subsequent encounter
- T45.3X6SUnderdosing of enzymes, sequela
- T45.4X1APoisoning by iron and its compounds, accidental (unintentional), initial encounter
- T45.4X1DPoisoning by iron and its compounds, accidental (unintentional), subsequent encounter
- T45.4X1SPoisoning by iron and its compounds, accidental (unintentional), sequela
- T45.4X2APoisoning by iron and its compounds, intentional self-harm, initial encounter
- T45.4X2DPoisoning by iron and its compounds, intentional self-harm, subsequent encounter
- T45.4X2SPoisoning by iron and its compounds, intentional self-harm, sequela
- T45.4X3APoisoning by iron and its compounds, assault, initial encounter
- T45.4X3DPoisoning by iron and its compounds, assault, subsequent encounter
- T45.4X3SPoisoning by iron and its compounds, assault, sequela
- T45.4X4APoisoning by iron and its compounds, undetermined, initial encounter
- T45.4X4DPoisoning by iron and its compounds, undetermined, subsequent encounter
- T45.4X4SPoisoning by iron and its compounds, undetermined, sequela
- T45.4X5AAdverse effect of iron and its compounds, initial encounter
- T45.4X5DAdverse effect of iron and its compounds, subsequent encounter
- T45.4X5SAdverse effect of iron and its compounds, sequela
- T45.4X6AUnderdosing of iron and its compounds, initial encounter
- T45.4X6DUnderdosing of iron and its compounds, subsequent encounter
- T45.4X6SUnderdosing of iron and its compounds, sequela
- T45.511APoisoning by anticoagulants, accidental (unintentional), initial encounter
- T45.511DPoisoning by anticoagulants, accidental (unintentional), subsequent encounter
- T45.511SPoisoning by anticoagulants, accidental (unintentional), sequela
- T45.512APoisoning by anticoagulants, intentional self-harm, initial encounter
- T45.512DPoisoning by anticoagulants, intentional self-harm, subsequent encounter
- T45.512SPoisoning by anticoagulants, intentional self-harm, sequela
- T45.513APoisoning by anticoagulants, assault, initial encounter
- T45.513DPoisoning by anticoagulants, assault, subsequent encounter
- T45.513SPoisoning by anticoagulants, assault, sequela
- T45.514APoisoning by anticoagulants, undetermined, initial encounter
- T45.514DPoisoning by anticoagulants, undetermined, subsequent encounter
- T45.514SPoisoning by anticoagulants, undetermined, sequela
- T45.515AAdverse effect of anticoagulants, initial encounter
- T45.515DAdverse effect of anticoagulants, subsequent encounter
- T45.515SAdverse effect of anticoagulants, sequela
- T45.516AUnderdosing of anticoagulants, initial encounter
- T45.516DUnderdosing of anticoagulants, subsequent encounter
- T45.516SUnderdosing of anticoagulants, sequela
- T45.521APoisoning by antithrombotic drugs, accidental (unintentional), initial encounter
- T45.521DPoisoning by antithrombotic drugs, accidental (unintentional), subsequent encounter
- T45.521SPoisoning by antithrombotic drugs, accidental (unintentional), sequela
- T45.522APoisoning by antithrombotic drugs, intentional self-harm, initial encounter
- T45.522DPoisoning by antithrombotic drugs, intentional self-harm, subsequent encounter
- T45.522SPoisoning by antithrombotic drugs, intentional self-harm, sequela
- T45.523APoisoning by antithrombotic drugs, assault, initial encounter
- T45.523DPoisoning by antithrombotic drugs, assault, subsequent encounter
- T45.523SPoisoning by antithrombotic drugs, assault, sequela
- T45.524APoisoning by antithrombotic drugs, undetermined, initial encounter
- T45.524DPoisoning by antithrombotic drugs, undetermined, subsequent encounter
- T45.524SPoisoning by antithrombotic drugs, undetermined, sequela
- T45.525AAdverse effect of antithrombotic drugs, initial encounter
- T45.525DAdverse effect of antithrombotic drugs, subsequent encounter
- T45.525SAdverse effect of antithrombotic drugs, sequela
- T45.526AUnderdosing of antithrombotic drugs, initial encounter
- T45.526DUnderdosing of antithrombotic drugs, subsequent encounter
- T45.526SUnderdosing of antithrombotic drugs, sequela
- T45.601APoisoning by unspecified fibrinolysis-affecting drugs, accidental (unintentional), initial encounter
- T45.601DPoisoning by unspecified fibrinolysis-affecting drugs, accidental (unintentional), subsequent encounter
- T45.601SPoisoning by unspecified fibrinolysis-affecting drugs, accidental (unintentional), sequela
- T45.602APoisoning by unspecified fibrinolysis-affecting drugs, intentional self-harm, initial encounter
- T45.602DPoisoning by unspecified fibrinolysis-affecting drugs, intentional self-harm, subsequent encounter
- T45.602SPoisoning by unspecified fibrinolysis-affecting drugs, intentional self-harm, sequela
- T45.603APoisoning by unspecified fibrinolysis-affecting drugs, assault, initial encounter
- T45.603DPoisoning by unspecified fibrinolysis-affecting drugs, assault, subsequent encounter
- T45.603SPoisoning by unspecified fibrinolysis-affecting drugs, assault, sequela
- T45.604APoisoning by unspecified fibrinolysis-affecting drugs, undetermined, initial encounter
- T45.604DPoisoning by unspecified fibrinolysis-affecting drugs, undetermined, subsequent encounter
- T45.604SPoisoning by unspecified fibrinolysis-affecting drugs, undetermined, sequela
- T45.605AAdverse effect of unspecified fibrinolysis-affecting drugs, initial encounter
- T45.605DAdverse effect of unspecified fibrinolysis-affecting drugs, subsequent encounter
- T45.605SAdverse effect of unspecified fibrinolysis-affecting drugs, sequela
- T45.606AUnderdosing of unspecified fibrinolysis-affecting drugs, initial encounter
- T45.606DUnderdosing of unspecified fibrinolysis-affecting drugs, subsequent encounter
- T45.606SUnderdosing of unspecified fibrinolysis-affecting drugs, sequela
- T45.611APoisoning by thrombolytic drug, accidental (unintentional), initial encounter
- T45.611DPoisoning by thrombolytic drug, accidental (unintentional), subsequent encounter
- T45.611SPoisoning by thrombolytic drug, accidental (unintentional), sequela
- T45.612APoisoning by thrombolytic drug, intentional self-harm, initial encounter
- T45.612DPoisoning by thrombolytic drug, intentional self-harm, subsequent encounter
- T45.612SPoisoning by thrombolytic drug, intentional self-harm, sequela
- T45.613APoisoning by thrombolytic drug, assault, initial encounter
- T45.613DPoisoning by thrombolytic drug, assault, subsequent encounter
- T45.613SPoisoning by thrombolytic drug, assault, sequela
- T45.614APoisoning by thrombolytic drug, undetermined, initial encounter
- T45.614DPoisoning by thrombolytic drug, undetermined, subsequent encounter
- T45.614SPoisoning by thrombolytic drug, undetermined, sequela
- T45.615AAdverse effect of thrombolytic drugs, initial encounter
- T45.615DAdverse effect of thrombolytic drugs, subsequent encounter
- T45.615SAdverse effect of thrombolytic drugs, sequela
- T45.616AUnderdosing of thrombolytic drugs, initial encounter
- T45.616DUnderdosing of thrombolytic drugs, subsequent encounter
- T45.616SUnderdosing of thrombolytic drugs, sequela
- T45.621APoisoning by hemostatic drug, accidental (unintentional), initial encounter
- T45.621DPoisoning by hemostatic drug, accidental (unintentional), subsequent encounter
- T45.621SPoisoning by hemostatic drug, accidental (unintentional), sequela
- T45.622APoisoning by hemostatic drug, intentional self-harm, initial encounter
- T45.622DPoisoning by hemostatic drug, intentional self-harm, subsequent encounter
- T45.622SPoisoning by hemostatic drug, intentional self-harm, sequela
- T45.623APoisoning by hemostatic drug, assault, initial encounter
- T45.623DPoisoning by hemostatic drug, assault, subsequent encounter
- T45.623SPoisoning by hemostatic drug, assault, sequela
- T45.624APoisoning by hemostatic drug, undetermined, initial encounter
- T45.624DPoisoning by hemostatic drug, undetermined, subsequent encounter
- T45.624SPoisoning by hemostatic drug, undetermined, sequela
- T45.625AAdverse effect of hemostatic drug, initial encounter
- T45.625DAdverse effect of hemostatic drug, subsequent encounter
- T45.625SAdverse effect of hemostatic drug, sequela
- T45.626AUnderdosing of hemostatic drugs, initial encounter
- T45.626DUnderdosing of hemostatic drugs, subsequent encounter
- T45.626SUnderdosing of hemostatic drugs, sequela
- T45.691APoisoning by other fibrinolysis-affecting drugs, accidental (unintentional), initial encounter
- T45.691DPoisoning by other fibrinolysis-affecting drugs, accidental (unintentional), subsequent encounter
- T45.691SPoisoning by other fibrinolysis-affecting drugs, accidental (unintentional), sequela
- T45.692APoisoning by other fibrinolysis-affecting drugs, intentional self-harm, initial encounter
- T45.692DPoisoning by other fibrinolysis-affecting drugs, intentional self-harm, subsequent encounter
- T45.692SPoisoning by other fibrinolysis-affecting drugs, intentional self-harm, sequela
- T45.693APoisoning by other fibrinolysis-affecting drugs, assault, initial encounter
- T45.693DPoisoning by other fibrinolysis-affecting drugs, assault, subsequent encounter
- T45.693SPoisoning by other fibrinolysis-affecting drugs, assault, sequela
- T45.694APoisoning by other fibrinolysis-affecting drugs, undetermined, initial encounter
- T45.694DPoisoning by other fibrinolysis-affecting drugs, undetermined, subsequent encounter
- T45.694SPoisoning by other fibrinolysis-affecting drugs, undetermined, sequela
- T45.695AAdverse effect of other fibrinolysis-affecting drugs, initial encounter
- T45.695DAdverse effect of other fibrinolysis-affecting drugs, subsequent encounter
- T45.695SAdverse effect of other fibrinolysis-affecting drugs, sequela
- T45.696AUnderdosing of other fibrinolysis-affecting drugs, initial encounter
- T45.696DUnderdosing of other fibrinolysis-affecting drugs, subsequent encounter
- T45.696SUnderdosing of other fibrinolysis-affecting drugs, sequela
- T45.7X1APoisoning by anticoagulant antagonists, vitamin K and other coagulants, accidental (unintentional), initial encounter
- T45.7X1DPoisoning by anticoagulant antagonists, vitamin K and other coagulants, accidental (unintentional), subsequent encounter
- T45.7X1SPoisoning by anticoagulant antagonists, vitamin K and other coagulants, accidental (unintentional), sequela
- T45.7X2APoisoning by anticoagulant antagonists, vitamin K and other coagulants, intentional self-harm, initial encounter
- T45.7X2DPoisoning by anticoagulant antagonists, vitamin K and other coagulants, intentional self-harm, subsequent encounter
- T45.7X2SPoisoning by anticoagulant antagonists, vitamin K and other coagulants, intentional self-harm, sequela
- T45.7X3APoisoning by anticoagulant antagonists, vitamin K and other coagulants, assault, initial encounter
- T45.7X3DPoisoning by anticoagulant antagonists, vitamin K and other coagulants, assault, subsequent encounter
- T45.7X3SPoisoning by anticoagulant antagonists, vitamin K and other coagulants, assault, sequela
- T45.7X4APoisoning by anticoagulant antagonists, vitamin K and other coagulants, undetermined, initial encounter
- T45.7X4DPoisoning by anticoagulant antagonists, vitamin K and other coagulants, undetermined, subsequent encounter
- T45.7X4SPoisoning by anticoagulant antagonists, vitamin K and other coagulants, undetermined, sequela
- T45.7X5AAdverse effect of anticoagulant antagonists, vitamin K and other coagulants, initial encounter
- T45.7X5DAdverse effect of anticoagulant antagonists, vitamin K and other coagulants, subsequent encounter
- T45.7X5SAdverse effect of anticoagulant antagonists, vitamin K and other coagulants, sequela
- T45.7X6AUnderdosing of anticoagulant antagonist, vitamin K and other coagulants, initial encounter
- T45.7X6DUnderdosing of anticoagulant antagonist, vitamin K and other coagulants, subsequent encounter
- T45.7X6SUnderdosing of anticoagulant antagonist, vitamin K and other coagulants, sequela
- T45.8X1APoisoning by other primarily systemic and hematological agents, accidental (unintentional), initial encounter
- T45.8X1DPoisoning by other primarily systemic and hematological agents, accidental (unintentional), subsequent encounter
- T45.8X1SPoisoning by other primarily systemic and hematological agents, accidental (unintentional), sequela
- T45.8X2APoisoning by other primarily systemic and hematological agents, intentional self-harm, initial encounter
- T45.8X2DPoisoning by other primarily systemic and hematological agents, intentional self-harm, subsequent encounter
- T45.8X2SPoisoning by other primarily systemic and hematological agents, intentional self-harm, sequela
- T45.8X3APoisoning by other primarily systemic and hematological agents, assault, initial encounter
- T45.8X3DPoisoning by other primarily systemic and hematological agents, assault, subsequent encounter
- T45.8X3SPoisoning by other primarily systemic and hematological agents, assault, sequela
- T45.8X4APoisoning by other primarily systemic and hematological agents, undetermined, initial encounter
- T45.8X4DPoisoning by other primarily systemic and hematological agents, undetermined, subsequent encounter
- T45.8X4SPoisoning by other primarily systemic and hematological agents, undetermined, sequela
- T45.8X5AAdverse effect of other primarily systemic and hematological agents, initial encounter
- T45.8X5DAdverse effect of other primarily systemic and hematological agents, subsequent encounter
- T45.8X5SAdverse effect of other primarily systemic and hematological agents, sequela
- T45.8X6AUnderdosing of other primarily systemic and hematological agents, initial encounter
- T45.8X6DUnderdosing of other primarily systemic and hematological agents, subsequent encounter
- T45.8X6SUnderdosing of other primarily systemic and hematological agents, sequela
- T45.AX1APoisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional), initial encounter
- T45.AX1DPoisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional), subsequent encounter
- T45.AX1SPoisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional), sequela
- T45.AX2APoisoning by immune checkpoint inhibitors and immunostimulant drugs, intentional self-harm, initial encounter
- T45.AX2DPoisoning by immune checkpoint inhibitors and immunostimulant drugs, intentional self-harm, subsequent encounter
- T45.AX2SPoisoning by immune checkpoint inhibitors and immunostimulant drugs, intentional self-harm, sequela
- T45.AX3APoisoning by immune checkpoint inhibitors and immunostimulant drugs, assault, initial encounter
- T45.AX3DPoisoning by immune checkpoint inhibitors and immunostimulant drugs, assault, subsequent encounter
- T45.AX3SPoisoning by immune checkpoint inhibitors and immunostimulant drugs, assault, sequela
- T45.AX4APoisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined, initial encounter
- T45.AX4DPoisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined, subsequent encounter
- T45.AX4SPoisoning by immune checkpoint inhibitors and immunostimulant drugs, undetermined, sequela
- T45.AX5AAdverse effect of immune checkpoint inhibitors and immunostimulant drugs, initial encounter
- T45.AX5DAdverse effect of immune checkpoint inhibitors and immunostimulant drugs, subsequent encounter
- T45.AX5SAdverse effect of immune checkpoint inhibitors and immunostimulant drugs, sequela
- T45.AX6AUnderdosing of immune checkpoint inhibitors and immunostimulant drugs, initial encounter
- T45.AX6DUnderdosing of immune checkpoint inhibitors and immunostimulant drugs, subsequent encounter
- T45.AX6SUnderdosing of immune checkpoint inhibitors and immunostimulant drugs, sequela
T45 questions
What does T45 mean?
T45 is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.