T46.3 — Poisoning by, adverse effect of and underdosing of coronary vasodilators
T46.3 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of coronary vasodilators. 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
- calcium-channel blockers (T46.1)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Poisoning by, adverse effect of and underdosing of dipyridamole
Risk adjustment
T46.3 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead T46.3
1 child code. Green means billable.
Related codes at this level
Codes that share T46. If T46.3 is not quite right, the correct code is usually one of these.
- 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
- T46.4Poisoning 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
Questions about T46.3
- Is T46.3 a billable ICD-10-CM code?
- No. T46.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T46.3 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).
- What cannot be coded together with T46.3?
- T46.3 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.