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ICD-10-CM · FY 2026 APRIL UPDATE

T45.8

Poisoning by, adverse effect of and underdosing of other primarily systemic and hematological agents

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
T45.8XPoisoning by, adverse effect of and underdosing of other primarily systemic and hematological agentsCategory
T45.8X1Poisoning by other primarily systemic and hematological agents, accidental (unintentional)Category
T45.8X1APoisoning by other primarily systemic and hematological agents, accidental (unintentional), initial encounterBillable
T45.8X1DPoisoning by other primarily systemic and hematological agents, accidental (unintentional), subsequent encounterBillable
T45.8X1SPoisoning by other primarily systemic and hematological agents, accidental (unintentional), sequelaBillable
T45.8X2Poisoning by other primarily systemic and hematological agents, intentional self-harmCategory
T45.8X2APoisoning by other primarily systemic and hematological agents, intentional self-harm, initial encounterBillable
T45.8X2DPoisoning by other primarily systemic and hematological agents, intentional self-harm, subsequent encounterBillable
T45.8X2SPoisoning by other primarily systemic and hematological agents, intentional self-harm, sequelaBillable
T45.8X3Poisoning by other primarily systemic and hematological agents, assaultCategory
T45.8X3APoisoning by other primarily systemic and hematological agents, assault, initial encounterBillable
T45.8X3DPoisoning by other primarily systemic and hematological agents, assault, subsequent encounterBillable
T45.8X3SPoisoning by other primarily systemic and hematological agents, assault, sequelaBillable
T45.8X4Poisoning by other primarily systemic and hematological agents, undeterminedCategory
T45.8X4APoisoning by other primarily systemic and hematological agents, undetermined, initial encounterBillable
T45.8X4DPoisoning by other primarily systemic and hematological agents, undetermined, subsequent encounterBillable
T45.8X4SPoisoning by other primarily systemic and hematological agents, undetermined, sequelaBillable
T45.8X5Adverse effect of other primarily systemic and hematological agentsCategory
T45.8X5AAdverse effect of other primarily systemic and hematological agents, initial encounterBillable
T45.8X5DAdverse effect of other primarily systemic and hematological agents, subsequent encounterBillable
T45.8X5SAdverse effect of other primarily systemic and hematological agents, sequelaBillable
T45.8X6Underdosing of other primarily systemic and hematological agentsCategory
T45.8X6AUnderdosing of other primarily systemic and hematological agents, initial encounterBillable
T45.8X6DUnderdosing of other primarily systemic and hematological agents, subsequent encounterBillable
T45.8X6SUnderdosing of other primarily systemic and hematological agents, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.