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ICD-10-CM 2027 diagnosis code

T43.643Poisoning by ecstasy, assault

Not billable — use a more specific codeRequires 7th character

T43.643 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.

Code last changed in FY2019 (effective October 1, 2018). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About T43.643

T43.643 is the ICD-10-CM diagnosis code for poisoning by ecstasy, assault. It belongs to category T43 (poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified), block T36-T50 (poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within T43.64 (poisoning by ecstasy), T43.643 is specifically for poisoning by ecstasy, assault. Related codes cover accidental (unintentional) (T43.641), intentional self-harm (T43.642) and undetermined (T43.644).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It was added in FY2019, effective October 1, 2018.

7th character

The appropriate 7th character is to be added to each code from category T43

Notes that apply from higher levels

Instructions written at a parent level also apply to T43.643.

› From T43.6 Poisoning by, adverse effect of and underdosing of psychostimulants
Excludes1
  • poisoning by, adverse effect of and underdosing of cocaine (T40.5-)
› From T43 Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
Excludes2
  • 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-)

Broader instructions also apply from T36-T50 Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Table of Drugs & Neoplasms entries

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2019 (effective 10/1/2018): Added
  • No changes since FY2019.

Common questions about T43.643

Is T43.643 billable?

No. T43.643 is a header code. Report one of its more specific subcodes instead.