All ICD10 Codes

T45

Non-Billable
ChapterS00–T88
Rankcategory
Official Description

Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified

Use a more specific code (0 billable, 11 non-billable)
T45.0Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugshas subcodesT45.1Poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drugshas subcodesT45.2Poisoning by, adverse effect of and underdosing of vitaminshas subcodesT45.3Poisoning by, adverse effect of and underdosing of enzymeshas subcodesT45.4Poisoning by, adverse effect of and underdosing of iron and its compoundshas subcodesT45.5Poisoning by, adverse effect of and underdosing of anticoagulants and antithrombotic drugshas subcodesT45.6Poisoning by, adverse effect of and underdosing of fibrinolysis-affecting drugshas subcodesT45.7Poisoning by, adverse effect of and underdosing of anticoagulant antagonists, vitamin K and other coagulantshas subcodesT45.8Poisoning by, adverse effect of and underdosing of other primarily systemic and hematological agentshas subcodesT45.9Poisoning by, adverse effect of and underdosing of unspecified primarily systemic and hematological agenthas subcodesT45.APoisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugshas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

CH19 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)

T36-T50 Parent Instructions

Includes
  • adverse effect of correct substance properly administered
  • poisoning by overdose of substance
  • poisoning by wrong substance given or taken in error
  • underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
Excludes1(Not coded here. Use a different code.)
  • toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes2(Not included here. Code separately if applicable.)
  • abuse and dependence of psychoactive substances (F10-F19)
  • abuse of non-dependence-producing substances (F55.-)
  • immunodeficiency due to drugs (D84.821)
  • drug reaction and poisoning affecting newborn (P00-P96)
  • pathological drug intoxication (inebriation) (F10-F19)
Code First
  • , for adverse effects, the nature of the adverse effect, such as:
  • adverse effect NOS (T88.7)
  • aspirin gastritis (K29.-)
  • blood disorders (D56-D76)
  • contact dermatitis (L23-L25)
  • dermatitis due to substances taken internally (L27.-)
  • nephropathy (N14.0-N14.2)
Use Additional Code
  • code(s) to specify:
  • manifestations of poisoning
  • underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
  • underdosing of medication regimen (Z91.12-, Z91.13-)

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
T36-T50Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
T45Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classifiedNot billable
T45.0Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugsSubcodes
T45.1Poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drugsSubcodes
T45.2Poisoning by, adverse effect of and underdosing of vitaminsSubcodes
T45.3Poisoning by, adverse effect of and underdosing of enzymesSubcodes
T45.4Poisoning by, adverse effect of and underdosing of iron and its compoundsSubcodes
T45.5Poisoning by, adverse effect of and underdosing of anticoagulants and antithrombotic drugsSubcodes
T45.6Poisoning by, adverse effect of and underdosing of fibrinolysis-affecting drugsSubcodes
T45.7Poisoning by, adverse effect of and underdosing of anticoagulant antagonists, vitamin K and other coagulantsSubcodes
T45.8Poisoning by, adverse effect of and underdosing of other primarily systemic and hematological agentsSubcodes
T45.9Poisoning by, adverse effect of and underdosing of unspecified primarily systemic and hematological agentSubcodes
T45.APoisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugsSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T45:

blockT36-T50
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified.

Search PCS Codes