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ICD-10-CM · FY 2026 APRIL UPDATE

T50.A2

Poisoning by, adverse effect of and underdosing of mixed bacterial vaccines without a pertussis component

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
T50.A21Poisoning by mixed bacterial vaccines without a pertussis component, accidental (unintentional)Category
T50.A21APoisoning by mixed bacterial vaccines without a pertussis component, accidental (unintentional), initial encounterBillable
T50.A21DPoisoning by mixed bacterial vaccines without a pertussis component, accidental (unintentional), subsequent encounterBillable
T50.A21SPoisoning by mixed bacterial vaccines without a pertussis component, accidental (unintentional), sequelaBillable
T50.A22Poisoning by mixed bacterial vaccines without a pertussis component, intentional self-harmCategory
T50.A22APoisoning by mixed bacterial vaccines without a pertussis component, intentional self-harm, initial encounterBillable
T50.A22DPoisoning by mixed bacterial vaccines without a pertussis component, intentional self-harm, subsequent encounterBillable
T50.A22SPoisoning by mixed bacterial vaccines without a pertussis component, intentional self-harm, sequelaBillable
T50.A23Poisoning by mixed bacterial vaccines without a pertussis component, assaultCategory
T50.A23APoisoning by mixed bacterial vaccines without a pertussis component, assault, initial encounterBillable
T50.A23DPoisoning by mixed bacterial vaccines without a pertussis component, assault, subsequent encounterBillable
T50.A23SPoisoning by mixed bacterial vaccines without a pertussis component, assault, sequelaBillable
T50.A24Poisoning by mixed bacterial vaccines without a pertussis component, undeterminedCategory
T50.A24APoisoning by mixed bacterial vaccines without a pertussis component, undetermined, initial encounterBillable
T50.A24DPoisoning by mixed bacterial vaccines without a pertussis component, undetermined, subsequent encounterBillable
T50.A24SPoisoning by mixed bacterial vaccines without a pertussis component, undetermined, sequelaBillable
T50.A25Adverse effect of mixed bacterial vaccines without a pertussis componentCategory
T50.A25AAdverse effect of mixed bacterial vaccines without a pertussis component, initial encounterBillable
T50.A25DAdverse effect of mixed bacterial vaccines without a pertussis component, subsequent encounterBillable
T50.A25SAdverse effect of mixed bacterial vaccines without a pertussis component, sequelaBillable
T50.A26Underdosing of mixed bacterial vaccines without a pertussis componentCategory
T50.A26AUnderdosing of mixed bacterial vaccines without a pertussis component, initial encounterBillable
T50.A26DUnderdosing of mixed bacterial vaccines without a pertussis component, subsequent encounterBillable
T50.A26SUnderdosing of mixed bacterial vaccines without a pertussis component, 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.

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