T45 ICD-10-CM Code: Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
T45Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified
ICD-10-CM diagnosis code · United States clinical modification
Where T45 sits
- 1
Chapter 19
Injury, poisoning and certain other consequences of external causes (S00-T88)
- 2
Section
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
- 3
Category T45
Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified
- 4
Code T45
Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified
Codes under T45
T45 is a non-billable category. Choose the child code that best matches the documented diagnosis.
T45.0Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugsT45.1Poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drugsT45.2Poisoning by, adverse effect of and underdosing of vitaminsT45.3Poisoning by, adverse effect of and underdosing of enzymesT45.4Poisoning by, adverse effect of and underdosing of iron and its compoundsT45.5Poisoning by, adverse effect of and underdosing of anticoagulants and antithrombotic drugsT45.6Poisoning by, adverse effect of and underdosing of fibrinolysis-affecting drugsT45.7Poisoning by, adverse effect of and underdosing of anticoagulant antagonists, vitamin K and other coagulantsT45.8Poisoning by, adverse effect of and underdosing of other primarily systemic and hematological agentsT45.9Poisoning by, adverse effect of and underdosing of unspecified primarily systemic and hematological agentT45.APoisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugsNotes for this code
Inclusion terms
No inclusion terms are listed for T45.
Code first
No “code first” instruction is listed for T45.
Use additional code
No “use additional code” instruction is listed for T45.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for T45.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for T45.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code T45 mean?
T45 is the FY 2027 U.S. ICD-10-CM code for “Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified.”
Is T45 a billable or specific ICD-10-CM code?
No. T45 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is T45 located in ICD-10-CM?
T45 is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50) (T36–T50), under category T45, Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified.
What coding notes are listed for T45?
No inclusion terms are listed for T45 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.