ICD-10-CM T46: Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system

ICD-10-CM Diagnosis Code (2025)

Official Description for T46

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

Coding Notes & Guidelines for T46

Excludes1: Not Coded Here

poisoning by, adverse effect of and underdosing of metaraminol (T44.4)

Excludes1: Not Coded Here

poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists (T44.7-)

Excludes1: Not Coded Here
  • poisoning by, adverse effect of and underdosing of
  • calcium-channel blockers (T46.1)
Excludes1: Not Coded Here

poisoning by, adverse effect of and underdosing of papaverine (T44.3)

Excludes2: Not Included Here
  • poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists (T44.7)
  • poisoning by, adverse effect of and underdosing of calcium-channel blockers (T46.1)
  • poisoning by, adverse effect of and underdosing of diuretics (T50.0-T50.2)
Inclusion Terms

Poisoning by cardiac-stimulant glycosides and drugs of similar action NOS

Inclusion Terms

Poisoning by calcium-channel blockers NOS

Inclusion Terms

Poisoning by other antidysrhythmic drugs NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of dipyridamole

Inclusion Terms

Poisoning by coronary vasodilators NOS

Inclusion Terms

Poisoning by angiotensin-converting-enzyme inhibitors NOS

Inclusion Terms

Poisoning by other antihypertensive drugs NOS

Inclusion Terms

Poisoning by antihyperlipidemic and antiarteriosclerotic drugs NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of nicotinic acid (derivatives)

Inclusion Terms

Poisoning by peripheral vasodilators NOS

Inclusion Terms

Poisoning by antivaricose drugs, including sclerosing agents NOS

7th Character Guidance

The appropriate 7th character is to be added to each code from category T46

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for T46):

T46.0 - Poisoning by, adverse effect of and underdosing of cardiac-stimulant glycosides and drugs of similar action T46.0X - Poisoning by, adverse effect of and underdosing of cardiac-stimulant glycosides and drugs of similar action 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 T46.1 - Poisoning by, adverse effect of and underdosing of calcium-channel blockers T46.1X - Poisoning by, adverse effect of and underdosing of calcium-channel blockers 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 T46.2 - Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs, not elsewhere classified T46.2X - Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs 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 T46.3 - Poisoning by, adverse effect of and underdosing of coronary vasodilators T46.3X - Poisoning by, adverse effect of and underdosing of coronary vasodilators 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 T46.4 - Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors T46.4X - Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors 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 T46.5 - Poisoning by, adverse effect of and underdosing of other antihypertensive drugs T46.5X - Poisoning by, adverse effect of and underdosing of other antihypertensive drugs 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 T46.6 - Poisoning by, adverse effect of and underdosing of antihyperlipidemic and antiarteriosclerotic drugs T46.6X - Poisoning by, adverse effect of and underdosing of antihyperlipidemic and antiarteriosclerotic 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 T46.7 - Poisoning by, adverse effect of and underdosing of peripheral vasodilators T46.7X - Poisoning by, adverse effect of and underdosing of peripheral vasodilators 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 T46.8 - Poisoning by, adverse effect of and underdosing of antivaricose drugs, including sclerosing agents T46.8X - Poisoning by, adverse effect of and underdosing of antivaricose drugs, including sclerosing agents 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 T46.9 - Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily affecting the cardiovascular system T46.90 - Poisoning by, adverse effect of and underdosing of unspecified agents primarily affecting the cardiovascular system 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 T46.99 - Poisoning by, adverse effect of and underdosing of other 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

About ICD-10-CM Code T46 (Poisoning by)

ICD-10-CM code T46 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM T46 became effective on October 1, 2024.

This page provides detailed information about T46 - Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Poisoning by related to adverse effect of and underdosing of agents primarily affecting the cardiovascular system.