T46.3Header code — not billable
Poisoning by, adverse effect of and underdosing of coronary vasodilators
Short description: Coronary vasodilators
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T46
- Effective date
- October 1, 2026
Related codes in category T46
T46Agents primarily affecting the cardiovascular systemT46.0Cardi-stim glycos/drug simlar actT46.0XCardi-stim glycos/drug simlar actT46.0X1Poisoning by cardi-stim glycos/drug simlar act, accidentalT46.0X1APoisoning by cardi-stim glycos/drug simlar act, acc, initYesT46.0X1DPoisoning by cardi-stim glycos/drug simlar act, acc, subsYesT46.0X1SPoisn by cardi-stim glycos/drug simlar act, acc, sequelaYesT46.0X2Poisoning by cardi-stim glycos/drug simlar act, self-harmT46.0X2APoisn by cardi-stim glycos/drug simlar act, self-harm, initYesT46.0X2DPoisn by cardi-stim glycos/drug simlar act, self-harm, subsYesT46.0X2SPoisn by cardi-stim glycos/drug simlar act, slf-hrm, sequelaYesT46.0X3Poisoning by cardi-stim glycos/drug simlar act, assault
Frequently asked questions
What is ICD-10 code T46.3?
T46.3 is an ICD-10-CM diagnosis code for Poisoning by, adverse effect of and underdosing of coronary vasodilators.
Is T46.3 a billable code?
No. T46.3 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is T46.3 in?
T46.3 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T46.3 become effective?
T46.3 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T46.3?
T46.3 belongs to category T46, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.