T46
ICD-10Non-billable categoryAgents primarily affecting the cardiovascular system
Official ICD-10-CM descriptor (FY2026)
Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system
T46 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- poisoning by, adverse effect of and underdosing of metaraminol (T44.4)
7th character
- The appropriate 7th character is to be added to each code from category T46
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under T46
- T46.0Cardi-stim glycos/drug simlar actcategory
- T46.1Calcium-channel blockerscategory
- T46.2Antidysrhythmic drugs, not elsewhere classifiedcategory
- T46.3Coronary vasodilatorscategory
- T46.4Angiotensin-converting-enzyme inhibitorscategory
- T46.5Antihypertensive drugscategory
- T46.6Antihyperlipidemic and antiarteriosclerotic drugscategory
- T46.7Peripheral vasodilatorscategory
- T46.8Antivaricose drugs, including sclerosing agentscategory
- T46.9And unsp agents primarily affecting the cardiovascular syscategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.