T46.1
T46.1: Poisoning by, adverse effect of and underdosing of calcium-channel blockers
Non-billable headerICD-10-CM
T46.1 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of calcium-channel blockers. 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
Other codes that can never be billed with T46.1
Their own Excludes1 notes name this code, so the conflict is not listed above.
- T46.3Poisoning by, adverse effect of and underdosing of coronary vasodilators
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 T46.1
1 child code. Green means billable.
Other codes under T46
- T46.0Poisoning by, adverse effect of and underdosing of cardiac-stimulant glycosides and drugs of similar action
- 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