2025 ICD-10-CM code T50.2

Poisoning by, adverse effect of, and underdosing of carbonic-anhydrase inhibitors, benzothiadiazides, and other diuretics.

Code first the nature of the adverse effect (e.g., using codes from other chapters), followed by T50.2 to identify the medication involved.Additional codes may be needed to specify manifestations of poisoning or underdosing. Use codes from categories T36-T50 with fifth or sixth character 5 to identify the specific drug.

Modifiers may be applicable depending on the specific circumstances of the encounter and the services provided.

Medical necessity for coding T50.2 is established when a patient presents with symptoms or signs consistent with poisoning, adverse effects, or underdosing of carbonic anhydrase inhibitors, benzothiadiazides, or other diuretics.The symptoms must be directly attributable to the medication, and documentation should support a causal link. Treatment must be medically necessary and consistent with established guidelines.

The clinical responsibility involves diagnosing and managing the poisoning or adverse effects resulting from the use of carbonic anhydrase inhibitors, benzothiadiazides, or other diuretics. This includes identifying the causative agent, assessing the severity of the reaction, implementing appropriate treatment (e.g., supportive care, antidotes), and monitoring the patient's response to treatment.

IMPORTANT Use additional code(s) to specify manifestations of poisoning or underdosing.The specific drug should be identified using codes from categories T36-T50 with a fifth or sixth character of 5.If an adverse effect is the reason for the visit, code first the nature of the adverse effect.

In simple words: This code is for problems caused by taking too much, too little, or the wrong type of a medicine called a diuretic (water pill), or a medicine like acetazolamide.This can include accidentally taking the wrong dose or a different drug altogether.

This code encompasses poisoning, adverse effects, and underdosing related to carbonic anhydrase inhibitors, benzothiadiazides, and other diuretics.It includes situations where the correct substance was administered improperly, an overdose occurred, the wrong substance was given or taken, or underdosing resulted from taking less than the prescribed amount, whether inadvertently or deliberately.Additional codes may be necessary to specify manifestations of poisoning or underdosing, and the specific drug involved should be identified using codes from categories T36-T50 with a fifth or sixth character of 5.

Example 1: A patient presents to the emergency department after accidentally ingesting a large dose of acetazolamide. They exhibit symptoms of confusion, lethargy, and nausea.The physician diagnoses acetazolamide overdose (T50.2) and provides supportive care., A patient on a diuretic medication experiences a severe allergic reaction, including hives and respiratory distress.The physician diagnoses an adverse effect of the diuretic (T50.2) and administers antihistamines and corticosteroids. , A patient with glaucoma who is taking acetazolamide reports feeling increasingly fatigued and experiencing cognitive impairment.Further testing reveals low serum levels of the medication (T50.2) due to non-adherence to the prescribed dosage.

Thorough documentation should include details of the medication(s) ingested, including name, dosage, route of administration, and timing.A detailed description of symptoms, vital signs, laboratory results (e.g., electrolyte levels, toxicology screen), treatment administered, and the patient's response to treatment is essential.Any relevant history of renal or hepatic impairment should be noted.

** This code applies to both acute and chronic adverse events related to these medications.Consider using additional codes to capture comorbid conditions or complications.

  • Payment Status: Active
  • Specialties:Emergency Medicine, Nephrology, Internal Medicine, Toxicology
  • Place of Service:Emergency Room - Hospital, Office, Inpatient Hospital
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