2026 ICD-10-CM Diagnosis Code T37.2X1SPoisoning by antimalarials and drugs acting on other blood protozoa, accidental (unintentional), sequela

AHRQ’s CCSR groups this code into broader clinical categories.

• 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  an acridine derivative formerly widely used as an antimalarial but superseded by chloroquine in recent years.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.

Substances in the Table of Drugs and Chemicals that reference this code family. Always confirm in the Tabular List before coding.

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:

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