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ICD-10-CM · FY 2026 APRIL UPDATE

T46.5X

Poisoning by, adverse effect of and underdosing of other antihypertensive drugs

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
T46.5X1Poisoning by other antihypertensive drugs, accidental (unintentional)Category
T46.5X1APoisoning by other antihypertensive drugs, accidental (unintentional), initial encounterBillable
T46.5X1DPoisoning by other antihypertensive drugs, accidental (unintentional), subsequent encounterBillable
T46.5X1SPoisoning by other antihypertensive drugs, accidental (unintentional), sequelaBillable
T46.5X2Poisoning by other antihypertensive drugs, intentional self-harmCategory
T46.5X2APoisoning by other antihypertensive drugs, intentional self-harm, initial encounterBillable
T46.5X2DPoisoning by other antihypertensive drugs, intentional self-harm, subsequent encounterBillable
T46.5X2SPoisoning by other antihypertensive drugs, intentional self-harm, sequelaBillable
T46.5X3Poisoning by other antihypertensive drugs, assaultCategory
T46.5X3APoisoning by other antihypertensive drugs, assault, initial encounterBillable
T46.5X3DPoisoning by other antihypertensive drugs, assault, subsequent encounterBillable
T46.5X3SPoisoning by other antihypertensive drugs, assault, sequelaBillable
T46.5X4Poisoning by other antihypertensive drugs, undeterminedCategory
T46.5X4APoisoning by other antihypertensive drugs, undetermined, initial encounterBillable
T46.5X4DPoisoning by other antihypertensive drugs, undetermined, subsequent encounterBillable
T46.5X4SPoisoning by other antihypertensive drugs, undetermined, sequelaBillable
T46.5X5Adverse effect of other antihypertensive drugsCategory
T46.5X5AAdverse effect of other antihypertensive drugs, initial encounterBillable
T46.5X5DAdverse effect of other antihypertensive drugs, subsequent encounterBillable
T46.5X5SAdverse effect of other antihypertensive drugs, sequelaBillable
T46.5X6Underdosing of other antihypertensive drugsCategory
T46.5X6AUnderdosing of other antihypertensive drugs, initial encounterBillable
T46.5X6DUnderdosing of other antihypertensive drugs, subsequent encounterBillable
T46.5X6SUnderdosing of other antihypertensive drugs, 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.