T46
T46: Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system
Non-billable headerICD-10-CM
T46 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T46
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- poisoning by, adverse effect of and underdosing of metaraminol (T44.4)
Other codes that can never be billed with T46
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead T46
10 child codes. Green means billable.
- T46.0Poisoning by, adverse effect of and underdosing of cardiac-stimulant glycosides and drugs of similar action
- T46.1Poisoning by, adverse effect of and underdosing of calcium-channel blockers
- T46.2Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs, not elsewhere classified
- T46.3Poisoning by, adverse effect of and underdosing of coronary vasodilators
- T46.4Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors
- T46.5Poisoning by, adverse effect of and underdosing of other antihypertensive drugs
- T46.6Poisoning by, adverse effect of and underdosing of antihyperlipidemic and antiarteriosclerotic drugs
- T46.7Poisoning by, adverse effect of and underdosing of peripheral vasodilators
- T46.8Poisoning by, adverse effect of and underdosing of antivaricose drugs, including sclerosing agents
- T46.9Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily affecting the cardiovascular system