2021 ICD-10-CM Code T40.1X

Poisoning by and adverse effect of heroin

Version 2021
Replaced Code
Non-Billable Code

Not Valid for Submission

T40.1X is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of poisoning by and adverse effect of heroin. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Short Description:Poisoning by and adverse effect of heroin
Long Description:Poisoning by and adverse effect of heroin

Code Classification

Specific Coding for Poisoning by and adverse effect of heroin

Header codes like T40.1X require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for poisoning by and adverse effect of heroin:

  • T40.1X1 - Poisoning by heroin, accidental (unintentional)
  • T40.1X1A - Poisoning by heroin, accidental (unintentional), initial encounter
  • T40.1X1D - Poisoning by heroin, accidental (unintentional), subsequent encounter
  • T40.1X1S - Poisoning by heroin, accidental (unintentional), sequela
  • T40.1X2 - Poisoning by heroin, intentional self-harm
  • T40.1X2A - Poisoning by heroin, intentional self-harm, initial encounter
  • T40.1X2D - Poisoning by heroin, intentional self-harm, subsequent encounter
  • T40.1X2S - Poisoning by heroin, intentional self-harm, sequela
  • T40.1X3 - Poisoning by heroin, assault
  • T40.1X3A - Poisoning by heroin, assault, initial encounter
  • T40.1X3D - Poisoning by heroin, assault, subsequent encounter
  • T40.1X3S - Poisoning by heroin, assault, sequela
  • T40.1X4 - Poisoning by heroin, undetermined
  • T40.1X4A - Poisoning by heroin, undetermined, initial encounter
  • T40.1X4D - Poisoning by heroin, undetermined, subsequent encounter
  • T40.1X4S - Poisoning by heroin, undetermined, sequela

Replaced Code

This code was replaced in the 2021 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2020. This code was replaced for the FY 2021 (October 1, 2020 - September 30, 2021).

  • K59.03 - Drug induced constipation

Information for Patients


Also called: Black tar, H, Horse, Junk, Skag, Smack

Heroin is a white or brown powder or a black, sticky goo. It's an opioid drug made from morphine, a natural substance in the seedpod of the Asian poppy plant. It can be mixed with water and injected with a needle. Heroin can also be smoked or snorted up the nose. All of these ways of taking heroin send it to the brain very quickly. This makes it very addictive.

Major health problems from heroin include miscarriages, heart infections, and death from overdose. People who inject the drug also risk getting infectious diseases, including HIV/AIDS and hepatitis.

Regular use of heroin can lead to tolerance. This means users need more and more drug to have the same effect. At higher doses over time, the body becomes dependent on heroin. If dependent users stop heroin, they have withdrawal symptoms. These symptoms include restlessness, muscle and bone pain, diarrhea and vomiting, and cold flashes with goose bumps.

NIH: National Institute on Drug Abuse

[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)