2022 ICD-10-CM Code T43.505

Adverse effect of unspecified antipsychotics and neuroleptics

Version 2021

Not Valid for Submission

ICD-10:T43.505
Short Description:Adverse effect of unsp antipsychotics and neuroleptics
Long Description:Adverse effect of unspecified antipsychotics and neuroleptics

Code Classification

  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances (T36-T50)
      • Psychotropic drugs, not elsewhere classified (T43)

T43.505 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of adverse effect of unspecified antipsychotics and neuroleptics. The code is not specific and is NOT valid for the year 2022 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.

The ICD-10-CM code T43.505 might also be used to specify conditions or terms like akathisia, drug-induced akathisia, drug-induced dyskinesia, neuroleptic adverse reaction, neuroleptic malignant syndrome , neuroleptic-induced acute akathisia, etc.

Unspecified diagnosis codes like T43.505 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.

Coding Guidelines

When coding an adverse effect of a drug that has been correctly prescribed and properly administered, assign the appropriate code for the nature of the adverse effect followed by the appropriate code for the adverse effect of the drug.

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

Specific Coding for Adverse effect of unsp antipsychotics and neuroleptics

Non-specific codes like T43.505 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 adverse effect of unsp antipsychotics and neuroleptics:

  • BILLABLE CODE - Use T43.505A for initial encounter
  • BILLABLE CODE - Use T43.505D for subsequent encounter
  • BILLABLE CODE - Use T43.505S for sequela

Approximate Synonyms

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

Table of Drugs and Chemicals

The code T43.505 is included 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 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

Information for Patients


Drug Reactions

Most of the time, medicines make our lives better. They reduce aches and pains, fight infections, and control problems such as high blood pressure or diabetes. But medicines can also cause unwanted reactions.

One problem is interactions, which may occur between

Interactions can change the actions of one or both drugs. The drugs might not work, or you could get side effects.

Side effects are unwanted effects caused by the drugs. Most are mild, such as a stomach aches or drowsiness, and go away after you stop taking the drug. Others can be more serious.

Drug allergies are another type of reaction. They can be mild or life-threatening. Skin reactions, such as hives and rashes, are the most common type. Anaphylaxis, a serious allergic reaction, is more rare.

When you start a new prescription or over-the-counter medication, make sure you understand how to take it correctly. Know which other medications and foods you need to avoid. Ask your health care provider or pharmacist if you have questions.


[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)