Non-Billable / Non-Specific Code
ICD-10-CM T46 is the diagnosis code for Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system. This code falls under the section "Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as T46. They are mutually exclusive:
Understanding where T46 sits in the ICD-10-CM classification helps ensure proper coding:
No, T46 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
T46 is the ICD-10-CM diagnosis code for "Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
T46 is located in Section T36-T50 — "Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances" within Chapter 19 of the ICD-10-CM Tabular List.
T46 has 10 sub-code(s) that provide more specific detail: T46.0, T46.1, T46.2, T46.3, T46.4 and more.
Use T46 when the patients documented diagnosis matches "Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system is T46.
No, T46 is non-billable. Use a more specific sub-code for primary diagnosis billing.
T46 is in Chapter 19 of the ICD-10-CM Tabular List.
Type 1 Excludes for T46 include: poisoning by, adverse effect of and underdosing of metaraminol (T44.4).
Yes, T46 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.