2024 ICD-10-CM Diagnosis Code T43.501

Poisoning by unspecified antipsychotics and neuroleptics, accidental (unintentional)

ICD-10-CM Code:
T43.501
ICD-10 Code for:
Poisoning by unsp antipsychot/neurolept, accidental
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
      (T36-T50)
      • Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
        (T43)

T43.501 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of poisoning by unspecified antipsychotics and neuroleptics, accidental (unintentional). The code is not specific and is NOT valid for the year 2024 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.

Unspecified diagnosis codes like T43.501 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Poisoning by unsp antipsychot/neurolept, accidental

Non-specific codes like T43.501 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for poisoning by unsp antipsychot/neurolept, accidental:

  • Use T43.501A for initial encounter - BILLABLE CODE

  • Use T43.501D for subsequent encounter - BILLABLE CODE

  • Use T43.501S for sequela - BILLABLE CODE

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Accidental poisoning by tranquilizers
  • Neuroleptic overdose
  • Poisoning by anti-psychotic agent
  • Poisoning by tranquilizer

Coding Guidelines

When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined. If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.

The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified (T43). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Poisoning by antipsychotics and neuroleptics NOS

Table of Drugs and Chemicals

The code is referenced in the Table of Drugs and Chemicals, this table contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents.

According to ICD-10-CM coding guidelines it is advised to do not code directly from the Table of Drugs and Chemicals, instead always refer back to the Tabular List when doing the initial coding. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. It is important to use as many codes as necessary to specify all reported drugs, medicinal or chemical substances. If the same diagnosis code describes the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, utilize the code only once.

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
(self-harm)
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
Antianxiety drug NECT43.501T43.502T43.503T43.504T43.505T43.506
AntihallucinogenT43.501T43.502T43.503T43.504T43.505T43.506
Antipsychotic drugT43.501T43.502T43.503T43.504T43.505T43.506
Antipsychotic drug
  »specified NEC
T43.501T43.502T43.503T43.504T43.505T43.506
Ataractic drug NECT43.501T43.502T43.503T43.504T43.505T43.506
Neuroleptic drug NECT43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NECT43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »with hypnotic or sedative
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »benzodiazepine NEC
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »butyrophenone NEC
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »carbamate
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »dimethylamine
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »ethylamine
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »hydroxyzine
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »major NEC
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »penothiazine NEC
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »phenothiazine-based
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »piperazine NEC
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »piperidine
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »propylamine
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »specified NEC
T43.501T43.502T43.503T43.504T43.505T43.506
Tranquilizer NEC
  »thioxanthene NEC
T43.501T43.502T43.503T43.504T43.505T43.506

Patient Education


Medication Errors

Medicines treat infectious diseases, prevent problems from chronic diseases, and ease pain. But medicines can also cause harmful reactions if not used correctly. Errors can happen in the hospital, at the health care provider's office, at the pharmacy, or at home. You can help prevent errors by:

  • Knowing your medicines. When you get a prescription, ask the name of the medicine and check to make sure that the pharmacy gave you the right medicine. Make sure that you understand how often you should take the medicine and how long you should take it.
  • Keeping a list of medicines.
    • Write down all of the medicines that you are taking, including the names of your medicines, how much you take, and when you take them. Make sure to include any over-the-counter medicines, vitamins, supplements, and herbs that you take.
    • List the medicines that you are allergic to or that have caused you problems in the past.
    • Take this list with you every time you see a health care provider.
  • Reading medicine labels and following the directions. Don't just rely on your memory - read the medication label every time. Be especially careful when giving medicines to children.
  • Asking questions. If you don't know the answers to these questions, ask your health care provider or pharmacist:
    • Why am I taking this medicine?
    • What are the common side effects?
    • What should I do if I have side effects?
    • When should I stop this medicine?
    • Can I take this medicine with the other medicines and supplements on my list?
    • Do I need to avoid certain foods or alcohol while taking this medicine?

Food and Drug Administration


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.