T46 Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system is T46 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
T36-T50: Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
Category T46
88 codes (66 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with T46.
  • poisoning by, adverse effect of and underdosing of metaraminol (T44.4)

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference T46 with the canonical source and edition:

T46 — Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/T46

Canonical URL: https://icd10codingpro.com/codes/T46

Related Codes

All Codes in T46

Every most-specific code under T46 Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system (66 codes):

Show the complete T46 code list
T46.0X1 Poisoning by cardiac-stimulant glycosides and drugs of similar action, accidental (unintentional) T46.0X2 Poisoning by cardiac-stimulant glycosides and drugs of similar action, intentional self-harm T46.0X3 Poisoning by cardiac-stimulant glycosides and drugs of similar action, assault T46.0X4 Poisoning by cardiac-stimulant glycosides and drugs of similar action, undetermined T46.0X5 Adverse effect of cardiac-stimulant glycosides and drugs of similar action T46.0X6 Underdosing of cardiac-stimulant glycosides and drugs of similar action T46.1X1 Poisoning by calcium-channel blockers, accidental (unintentional) T46.1X2 Poisoning by calcium-channel blockers, intentional self-harm T46.1X3 Poisoning by calcium-channel blockers, assault T46.1X4 Poisoning by calcium-channel blockers, undetermined T46.1X5 Adverse effect of calcium-channel blockers T46.1X6 Underdosing of calcium-channel blockers T46.2X1 Poisoning by other antidysrhythmic drugs, accidental (unintentional) T46.2X2 Poisoning by other antidysrhythmic drugs, intentional self-harm T46.2X3 Poisoning by other antidysrhythmic drugs, assault T46.2X4 Poisoning by other antidysrhythmic drugs, undetermined T46.2X5 Adverse effect of other antidysrhythmic drugs T46.2X6 Underdosing of other antidysrhythmic drugs T46.3X1 Poisoning by coronary vasodilators, accidental (unintentional) T46.3X2 Poisoning by coronary vasodilators, intentional self-harm T46.3X3 Poisoning by coronary vasodilators, assault T46.3X4 Poisoning by coronary vasodilators, undetermined T46.3X5 Adverse effect of coronary vasodilators T46.3X6 Underdosing of coronary vasodilators T46.4X1 Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional) T46.4X2 Poisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm T46.4X3 Poisoning by angiotensin-converting-enzyme inhibitors, assault T46.4X4 Poisoning by angiotensin-converting-enzyme inhibitors, undetermined T46.4X5 Adverse effect of angiotensin-converting-enzyme inhibitors T46.4X6 Underdosing of angiotensin-converting-enzyme inhibitors T46.5X1 Poisoning by other antihypertensive drugs, accidental (unintentional) T46.5X2 Poisoning by other antihypertensive drugs, intentional self-harm T46.5X3 Poisoning by other antihypertensive drugs, assault T46.5X4 Poisoning by other antihypertensive drugs, undetermined T46.5X5 Adverse effect of other antihypertensive drugs T46.5X6 Underdosing of other antihypertensive drugs T46.6X1 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, accidental (unintentional) T46.6X2 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, intentional self-harm T46.6X3 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, assault T46.6X4 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, undetermined T46.6X5 Adverse effect of antihyperlipidemic and antiarteriosclerotic drugs T46.6X6 Underdosing of antihyperlipidemic and antiarteriosclerotic drugs T46.7X1 Poisoning by peripheral vasodilators, accidental (unintentional) T46.7X2 Poisoning by peripheral vasodilators, intentional self-harm T46.7X3 Poisoning by peripheral vasodilators, assault T46.7X4 Poisoning by peripheral vasodilators, undetermined T46.7X5 Adverse effect of peripheral vasodilators T46.7X6 Underdosing of peripheral vasodilators T46.8X1 Poisoning by antivaricose drugs, including sclerosing agents, accidental (unintentional) T46.8X2 Poisoning by antivaricose drugs, including sclerosing agents, intentional self-harm T46.8X3 Poisoning by antivaricose drugs, including sclerosing agents, assault T46.8X4 Poisoning by antivaricose drugs, including sclerosing agents, undetermined T46.8X5 Adverse effect of antivaricose drugs, including sclerosing agents T46.8X6 Underdosing of antivaricose drugs, including sclerosing agents T46.901 Poisoning by unspecified agents primarily affecting the cardiovascular system, accidental (unintentional) T46.902 Poisoning by unspecified agents primarily affecting the cardiovascular system, intentional self-harm T46.903 Poisoning by unspecified agents primarily affecting the cardiovascular system, assault T46.904 Poisoning by unspecified agents primarily affecting the cardiovascular system, undetermined T46.905 Adverse effect of unspecified agents primarily affecting the cardiovascular system T46.906 Underdosing of unspecified agents primarily affecting the cardiovascular system T46.991 Poisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional) T46.992 Poisoning by other agents primarily affecting the cardiovascular system, intentional self-harm T46.993 Poisoning by other agents primarily affecting the cardiovascular system, assault T46.994 Poisoning by other agents primarily affecting the cardiovascular system, undetermined T46.995 Adverse effect of other agents primarily affecting the cardiovascular system T46.996 Underdosing of other agents primarily affecting the cardiovascular system
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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