2024 ICD-10-CM Diagnosis Code T37.2X6

Underdosing of antimalarials and drugs acting on other blood protozoa

ICD-10-CM Code:
T37.2X6
ICD-10 Code for:
Underdosing of antimalarials and drugs acting on bld protzoa
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 other systemic anti-infectives and antiparasitics
        (T37)

T37.2X6 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of underdosing of antimalarials and drugs acting on other blood protozoa. 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.

Specific Coding Applicable to Underdosing of antimalarials and drugs acting on bld protzoa

Non-specific codes like T37.2X6 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 underdosing of antimalarials and drugs acting on bld protzoa:

  • Use T37.2X6A for initial encounter - BILLABLE CODE

  • Use T37.2X6D for subsequent encounter - BILLABLE CODE

  • Use T37.2X6S for sequela - BILLABLE CODE

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

Underdosing refers to taking less of a medication than is prescribed by a provider or a manufacturer's instruction. Codes for underdosing should never be assigned as principal or first-listed codes. If a patient has a relapse or exacerbation of the medical condition for which the drug is prescribed because of the reduction in dose, then the medical condition itself should be coded.

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

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
8-Aminoquinoline drugsT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
AmodiaquineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Amopyroquin (e)T37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
AntimalarialT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Antimalarial
  »prophylactic NEC
T37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Antimalarial
  »pyrimidine derivative
T37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
AralenT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
CamoquinT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
ChloroguanideT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
ChloroquineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
ChlorproguanilT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
CinchonaT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Cinchonine alkaloidsT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Cycloguanil embonateT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
DaraprimT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
EflornithineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
GuanatolT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
HalofantrineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
IsopentaquineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
MefloquineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
MepacrineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
PaludrineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Pamaquine (naphthoute)T37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
PentaquineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
PrimaquineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
ProguanilT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
PyrimethamineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Pyrimethamine
  »with sulfadoxine
T37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
QuinacrineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
QuinineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
QuinocideT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Schizontozide (blood) (tissue)T37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6

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


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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.