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ICD-10-CM · FY 2026 APRIL UPDATE

T45.3X

Poisoning by, adverse effect of and underdosing of enzymes

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
T45.3X1Poisoning by enzymes, accidental (unintentional)Category
T45.3X1APoisoning by enzymes, accidental (unintentional), initial encounterBillable
T45.3X1DPoisoning by enzymes, accidental (unintentional), subsequent encounterBillable
T45.3X1SPoisoning by enzymes, accidental (unintentional), sequelaBillable
T45.3X2Poisoning by enzymes, intentional self-harmCategory
T45.3X2APoisoning by enzymes, intentional self-harm, initial encounterBillable
T45.3X2DPoisoning by enzymes, intentional self-harm, subsequent encounterBillable
T45.3X2SPoisoning by enzymes, intentional self-harm, sequelaBillable
T45.3X3Poisoning by enzymes, assaultCategory
T45.3X3APoisoning by enzymes, assault, initial encounterBillable
T45.3X3DPoisoning by enzymes, assault, subsequent encounterBillable
T45.3X3SPoisoning by enzymes, assault, sequelaBillable
T45.3X4Poisoning by enzymes, undeterminedCategory
T45.3X4APoisoning by enzymes, undetermined, initial encounterBillable
T45.3X4DPoisoning by enzymes, undetermined, subsequent encounterBillable
T45.3X4SPoisoning by enzymes, undetermined, sequelaBillable
T45.3X5Adverse effect of enzymesCategory
T45.3X5AAdverse effect of enzymes, initial encounterBillable
T45.3X5DAdverse effect of enzymes, subsequent encounterBillable
T45.3X5SAdverse effect of enzymes, sequelaBillable
T45.3X6Underdosing of enzymesCategory
T45.3X6AUnderdosing of enzymes, initial encounterBillable
T45.3X6DUnderdosing of enzymes, subsequent encounterBillable
T45.3X6SUnderdosing of enzymes, 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.