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ICD-10-CM · FY 2026 APRIL UPDATE

T46.99

Poisoning by, adverse effect of and underdosing of other agents primarily affecting the cardiovascular system

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
T46.991Poisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional)Category
T46.991APoisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional), initial encounterBillable
T46.991DPoisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional), subsequent encounterBillable
T46.991SPoisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional), sequelaBillable
T46.992Poisoning by other agents primarily affecting the cardiovascular system, intentional self-harmCategory
T46.992APoisoning by other agents primarily affecting the cardiovascular system, intentional self-harm, initial encounterBillable
T46.992DPoisoning by other agents primarily affecting the cardiovascular system, intentional self-harm, subsequent encounterBillable
T46.992SPoisoning by other agents primarily affecting the cardiovascular system, intentional self-harm, sequelaBillable
T46.993Poisoning by other agents primarily affecting the cardiovascular system, assaultCategory
T46.993APoisoning by other agents primarily affecting the cardiovascular system, assault, initial encounterBillable
T46.993DPoisoning by other agents primarily affecting the cardiovascular system, assault, subsequent encounterBillable
T46.993SPoisoning by other agents primarily affecting the cardiovascular system, assault, sequelaBillable
T46.994Poisoning by other agents primarily affecting the cardiovascular system, undeterminedCategory
T46.994APoisoning by other agents primarily affecting the cardiovascular system, undetermined, initial encounterBillable
T46.994DPoisoning by other agents primarily affecting the cardiovascular system, undetermined, subsequent encounterBillable
T46.994SPoisoning by other agents primarily affecting the cardiovascular system, undetermined, sequelaBillable
T46.995Adverse effect of other agents primarily affecting the cardiovascular systemCategory
T46.995AAdverse effect of other agents primarily affecting the cardiovascular system, initial encounterBillable
T46.995DAdverse effect of other agents primarily affecting the cardiovascular system, subsequent encounterBillable
T46.995SAdverse effect of other agents primarily affecting the cardiovascular system, sequelaBillable
T46.996Underdosing of other agents primarily affecting the cardiovascular systemCategory
T46.996AUnderdosing of other agents primarily affecting the cardiovascular system, initial encounterBillable
T46.996DUnderdosing of other agents primarily affecting the cardiovascular system, subsequent encounterBillable
T46.996SUnderdosing of other agents primarily affecting the cardiovascular system, 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.