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ICD-10-CM · FY 2026 APRIL UPDATE

T50.Z

Poisoning by, adverse effect of and underdosing of other vaccines and biological substances

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.Z1Poisoning by, adverse effect of and underdosing of immunoglobulinCategory
T50.Z11Poisoning by immunoglobulin, accidental (unintentional)Category
T50.Z11APoisoning by immunoglobulin, accidental (unintentional), initial encounterBillable
T50.Z11DPoisoning by immunoglobulin, accidental (unintentional), subsequent encounterBillable
T50.Z11SPoisoning by immunoglobulin, accidental (unintentional), sequelaBillable
T50.Z12Poisoning by immunoglobulin, intentional self-harmCategory
T50.Z12APoisoning by immunoglobulin, intentional self-harm, initial encounterBillable
T50.Z12DPoisoning by immunoglobulin, intentional self-harm, subsequent encounterBillable
T50.Z12SPoisoning by immunoglobulin, intentional self-harm, sequelaBillable
T50.Z13Poisoning by immunoglobulin, assaultCategory
T50.Z13APoisoning by immunoglobulin, assault, initial encounterBillable
T50.Z13DPoisoning by immunoglobulin, assault, subsequent encounterBillable
T50.Z13SPoisoning by immunoglobulin, assault, sequelaBillable
T50.Z14Poisoning by immunoglobulin, undeterminedCategory
T50.Z14APoisoning by immunoglobulin, undetermined, initial encounterBillable
T50.Z14DPoisoning by immunoglobulin, undetermined, subsequent encounterBillable
T50.Z14SPoisoning by immunoglobulin, undetermined, sequelaBillable
T50.Z15Adverse effect of immunoglobulinCategory
T50.Z15AAdverse effect of immunoglobulin, initial encounterBillable
T50.Z15DAdverse effect of immunoglobulin, subsequent encounterBillable
T50.Z15SAdverse effect of immunoglobulin, sequelaBillable
T50.Z16Underdosing of immunoglobulinCategory
T50.Z16AUnderdosing of immunoglobulin, initial encounterBillable
T50.Z16DUnderdosing of immunoglobulin, subsequent encounterBillable
T50.Z16SUnderdosing of immunoglobulin, sequelaBillable
T50.Z9Poisoning by, adverse effect of and underdosing of other vaccines and biological substancesCategory
T50.Z91Poisoning by other vaccines and biological substances, accidental (unintentional)Category
T50.Z91APoisoning by other vaccines and biological substances, accidental (unintentional), initial encounterBillable
T50.Z91DPoisoning by other vaccines and biological substances, accidental (unintentional), subsequent encounterBillable
T50.Z91SPoisoning by other vaccines and biological substances, accidental (unintentional), 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.