ICDwise
T43 ⚠ Non-billable

Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified

ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes

Code
T43
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Excludes2 — not included here, but may code together
  • appetite depressants (T50.5-)
  • barbiturates (T42.3-)
  • benzodiazepines (T42.4-)
  • drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.- -F19.-)
  • methaqualone (T42.6-)
  • psychodysleptics [hallucinogens] (T40.7-T40.9-)
7th character
  • The appropriate 7th character is to be added to each code from category T43

Frequently asked questions

What is ICD-10 code T43?
ICD-10-CM code T43 represents Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified. It is a non-billable header code requiring a more specific subcategory in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is T43 billable?
No. T43 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is T43 in?
T43 belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.

Related codes in the T43 category

T43.0 Poisoning by, adverse effect of and underdosing of tricyclic and tetracyclic antidepressants Non-billable T43.01 Poisoning by, adverse effect of and underdosing of tricyclic antidepressants Non-billable T43.02 Poisoning by, adverse effect of and underdosing of tetracyclic antidepressants Non-billable T43.011 Poisoning by tricyclic antidepressants, accidental (unintentional) Non-billable T43.012 Poisoning by tricyclic antidepressants, intentional self-harm Non-billable T43.013 Poisoning by tricyclic antidepressants, assault Non-billable T43.014 Poisoning by tricyclic antidepressants, undetermined Non-billable T43.015 Adverse effect of tricyclic antidepressants Non-billable

Search all 98,186 ICD-10-CM codes instantly

Search ICDwise →