2024 ICD-10-CM Diagnosis Code T37.2X1A

Approximate Synonyms

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

• Accidental chloroquine overdose
• Accidental chloroquine poisoning
• Accidental cycloguanil poisoning
• Accidental mefloquine overdose
• Accidental mefloquine poisoning
• Accidental primaquine overdose
• Accidental primaquine poisoning
• Accidental proguanil overdose
• Accidental proguanil poisoning
• Accidental pyrimethamine overdose
• Accidental pyrimethamine poisoning
• Accidental quinine overdose
• Accidental quinine poisoning
• Antimalarial drug overdose
• Biguanide overdose
• Biguanide overdose
• Chloroquine overdose
• Mefloquine overdose
• Mefloquine poisoning
• Poisoning by chloroquine
• Poisoning by cycloguanil
• Poisoning by primaquine
• Poisoning by proguanil
• Poisoning by pyrimethamine
• Poisoning by quinine
• Primaquine overdose
• Proguanil overdose
• Pyrimethamine overdose
• Quinine overdose

Clinical Information

• Amodiaquine

  a 4-aminoquinoline compound with anti-inflammatory properties.

• Chloroquine

  the prototypical antimalarial agent with a mechanism that is not well understood. it has also been used to treat rheumatoid arthritis, systemic lupus erythematosus, and in the systemic therapy of amebic liver abscesses.

• Cinchona

  a genus of rubiaceous south american trees that yields the toxic cinchona alkaloids from their bark; quinine; quinidine; chinconine, cinchonidine and others are used to treat malaria and cardiac arrhythmias.

• Cinchona Alkaloids

  alkaloids extracted from various species of cinchona.

• Eflornithine

  an inhibitor of ornithine decarboxylase, the rate limiting enzyme of the polyamine biosynthetic pathway.

• Mefloquine

  a phospholipid-interacting antimalarial drug (antimalarials). it is very effective against plasmodium falciparum with very few side effects.

• Primaquine

  an aminoquinoline that is given by mouth to produce a radical cure and prevent relapse of vivax and ovale malarias following treatment with a blood schizontocide. it has also been used to prevent transmission of falciparum malaria by those returning to areas where there is a potential for re-introduction of malaria. adverse effects include anemias and gi disturbances. (from martindale, the extra pharmacopeia, 30th ed, p404)

• Proguanil

  a biguanide compound which metabolizes in the body to form cycloguanil, an anti-malaria agent.

• Pyrimethamine

  one of the folic acid antagonists that is used as an antimalarial or with a sulfonamide to treat toxoplasmosis.

• Quinacrine

  an acridine derivative formerly widely used as an antimalarial but superseded by chloroquine in recent years. it has also been used as an anthelmintic and in the treatment of giardiasis and malignant effusions. it is used in cell biological experiments as an inhibitor of phospholipase a2.

• Quinacrine Mustard

  nitrogen mustard analog of quinacrine used primarily as a stain in the studies of chromosomes and chromatin. fluoresces by reaction with nucleic acids in chromosomes.

• Quinine

  an alkaloid derived from the bark of the cinchona tree. it is used as an antimalarial drug, and is the active ingredient in extracts of the cinchona that have been used for that purpose since before 1633. quinine is also a mild antipyretic and analgesic and has been used in common cold preparations for that purpose. it was used commonly and as a bitter and flavoring agent, and is still useful for the treatment of babesiosis. quinine is also useful in some muscular disorders, especially nocturnal leg cramps and myotonia congenita, because of its direct effects on muscle membrane and sodium channels. the mechanisms of its antimalarial effects are not well understood.

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 other systemic anti-infectives and antiparasitics (T37). Use the following options for the aplicable episode of care:

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

T37.2X1A is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Convert T37.2X1A to ICD-9-CM

• ICD-9-CM Code: 961.4 - Poisoning-antimalarials
  Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
• ICD-9-CM Code: E857 - Acc pois-oth anti-infect
  Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.

Table of Drugs and Chemicals

The parent code T37.2X1 of the current diagnosis 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.