2021 ICD-10-CM Code T40.5X

Poisoning by, adverse effect of and underdosing of cocaine

Version 2021
Replaced Code
Non-Billable Code

Not Valid for Submission

T40.5X 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, adverse effect of and underdosing of cocaine. 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, adverse effect of and underdosing of cocaine
Long Description:Poisoning by, adverse effect of and underdosing of cocaine

Code Classification

Specific Coding for Poisoning by, adverse effect of and underdosing of cocaine

Header codes like T40.5X 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, adverse effect of and underdosing of cocaine:

  • T40.5X1 - Poisoning by cocaine, accidental (unintentional)
  • T40.5X1A - Poisoning by cocaine, accidental (unintentional), initial encounter
  • T40.5X1D - Poisoning by cocaine, accidental (unintentional), subsequent encounter
  • T40.5X1S - Poisoning by cocaine, accidental (unintentional), sequela
  • T40.5X2 - Poisoning by cocaine, intentional self-harm
  • T40.5X2A - Poisoning by cocaine, intentional self-harm, initial encounter
  • T40.5X2D - Poisoning by cocaine, intentional self-harm, subsequent encounter
  • T40.5X2S - Poisoning by cocaine, intentional self-harm, sequela
  • T40.5X3 - Poisoning by cocaine, assault
  • T40.5X3A - Poisoning by cocaine, assault, initial encounter
  • T40.5X3D - Poisoning by cocaine, assault, subsequent encounter
  • T40.5X3S - Poisoning by cocaine, assault, sequela
  • T40.5X4 - Poisoning by cocaine, undetermined
  • T40.5X4A - Poisoning by cocaine, undetermined, initial encounter
  • T40.5X4D - Poisoning by cocaine, undetermined, subsequent encounter
  • T40.5X4S - Poisoning by cocaine, undetermined, sequela
  • T40.5X5 - Adverse effect of cocaine
  • T40.5X5A - Adverse effect of cocaine, initial encounter
  • T40.5X5D - Adverse effect of cocaine, subsequent encounter
  • T40.5X5S - Adverse effect of cocaine, sequela
  • T40.5X6 - Underdosing of cocaine
  • T40.5X6A - Underdosing of cocaine, initial encounter
  • T40.5X6D - Underdosing of cocaine, subsequent encounter
  • T40.5X6S - Underdosing of cocaine, 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: Blow, C, Coca, Coke, Crack, Flake, Snow

Cocaine is a white powder. It can be snorted up the nose or mixed with water and injected with a needle. Cocaine can also be made into small white rocks, called crack. Crack is smoked in a small glass pipe.

Cocaine speeds up your whole body. You may feel full of energy, happy, and excited. But then your mood can change. You can become angry, nervous, and afraid that someone's out to get you. You might do things that make no sense. After the "high" of the cocaine wears off, you can "crash" and feel tired and sad for days. You also get a strong craving to take the drug again to try to feel better.

No matter how cocaine is taken, it is dangerous. Some of the most common serious problems include heart attack and stroke. You are also at risk for HIV/AIDS and hepatitis, from sharing needles or having unsafe sex. Cocaine is more dangerous when combined with other drugs or alcohol.

It is easy to lose control over cocaine use and become addicted. Then, even if you get treatment, it can be hard to stay off the drug. People who stopped using cocaine can still feel strong cravings for the drug, sometimes even years later.

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)