2024 ICD-10-CM Diagnosis Code T43.3X1

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

Non-specific codes like T43.3X1 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 phenothiaz antipsychot/neurolept, accidental:

Approximate Synonyms

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

• Accidental chlorpromazine overdose
• Accidental fluphenazine decanoate overdose
• Accidental fluphenazine enanthate overdose
• Accidental levomeprazine poisoning
• Accidental levomepromazine overdose
• Accidental pericyazine overdose
• Accidental pericyazine poisoning
• Accidental perphenazine overdose
• Accidental perphenazine poisoning
• Accidental pipothiazine overdose
• Accidental pipothiazine poisoning
• Accidental poisoning by chlorpromazine
• Accidental poisoning by fluphenazine
• Accidental poisoning by phenothiazine-based tranquilizer
• Accidental poisoning by prochlorperazine
• Accidental poisoning by promazine
• Accidental prochlorperazine overdose
• Accidental promazine overdose
• Accidental thiethylperazine overdose
• Accidental thiethylperazine poisoning
• Accidental thioridazine overdose
• Accidental thioridazine poisoning
• Accidental trifluoperazine overdose
• Accidental trifluoperazine poisoning
• Chlorpromazine overdose
• Fluphenazine decanoate overdose
• Fluphenazine enanthate overdose
• Levomeprazine overdose
• Levomepromazine poisoning
• Pericyazine overdose
• Pericyazine poisoning
• Pericyazine poisoning
• Pericyazine poisoning
• Perphenazine overdose
• Perphenazine poisoning
• Phenothiazine and/or phenothiazine derivative overdose
• Phenothiazine poisoning
• Pipothiazine overdose
• Pipothiazine poisoning
• Poisoning by chlorpromazine
• Poisoning by fluphenazine
• Poisoning by phenothiazine-based tranquilizer
• Poisoning by prochlorperazine
• Poisoning by promazine
• Prochlorperazine overdose
• Promazine overdose
• Thiethylperazine overdose
• Thiethylperazine poisoning
• Thioridazine overdose
• Thioridazine poisoning
• Trifluoperazine overdose
• Trifluoperazine poisoning

Clinical Information

• Acepromazine

  a phenothiazine that is used in the treatment of psychoses.

• Chlorpromazine

  the prototypical phenothiazine antipsychotic drug. like the other drugs in this class chlorpromazine's antipsychotic actions are thought to be due to long-term adaptation by the brain to blocking dopamine receptors. chlorpromazine has several other actions and therapeutic uses, including as an antiemetic and in the treatment of intractable hiccup.

• Fluphenazine

  a phenothiazine used in the treatment of psychoses. its properties and uses are generally similar to those of chlorpromazine.

• Mesoridazine

  a phenothiazine antipsychotic with effects similar to chlorpromazine.

• Methotrimeprazine

  a phenothiazine with pharmacological activity similar to that of both chlorpromazine and promethazine. it has the histamine-antagonist properties of the antihistamines together with central nervous system effects resembling those of chlorpromazine. (from martindale, the extra pharmacopoeia, 30th ed, p604)

• Perazine

  a phenothiazine antipsychotic with actions and uses similar to those of chlorpromazine. extrapyramidal symptoms may be more common than other side effects.

• Perphenazine

  an antipsychotic phenothiazine derivative with actions and uses similar to those of chlorpromazine.

• Prochlorperazine

  a phenothiazine antipsychotic used principally in the treatment of nausea; vomiting; and vertigo. it is more likely than chlorpromazine to cause extrapyramidal disorders. (from martindale, the extra pharmacopoeia, 30th ed, p612)

• Promazine

  a phenothiazine with actions similar to chlorpromazine but with less antipsychotic activity. it is primarily used in short-term treatment of disturbed behavior and as an antiemetic.

• Thiethylperazine

  a dopamine antagonist that is particularly useful in treating the nausea and vomiting associated with anesthesia, mildly emetic cancer chemotherapy agents, radiation therapy, and toxins. this piperazine phenothiazine does not prevent vertigo or motion sickness. (from ama drug evaluations annual, 1994, p457)

• Thioridazine

  a phenothiazine antipsychotic used in the management of phycoses, including schizophrenia.

• Trifluoperazine

  a phenothiazine with actions similar to chlorpromazine. it is used as an antipsychotic and an antiemetic.

• Triflupromazine

  a phenothiazine used as an antipsychotic agent and as an antiemetic.

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

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.

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

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.