2025 ICD-10-CM code T46.2X

Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs.

Use secondary codes from Chapter 20, External causes of morbidity, to indicate the cause of the injury.Use additional code to identify any retained foreign body, if applicable (Z18.-). Code first, for adverse effects, the nature of the adverse effect. The drug giving rise to the adverse effect should be identified by using codes from categories T36-T50 with fifth or sixth character 5. Use additional codes to specify manifestations of poisoning, underdosing, or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9) and underdosing of medication regimen (Z91.12-, Z91.13-).

Yes, the code allows for the use of 7th character extensions to indicate the intent of the poisoning or adverse effect (accidental, intentional self-harm, assault, undetermined, adverse effect) and the place of occurrence.

Medical necessity is established by the patient's clinical presentation and the need for treatment due to the poisoning, adverse effect, or underdosing of the antidysrhythmic medication.

The provider is responsible for documenting the specific antidysrhythmic drug involved, the circumstances of the poisoning or adverse effect, and the patient's clinical presentation.

In simple words: This code represents poisoning, adverse effects, or underdosing of antidysrhythmic drugs (other than beta-blockers and metaraminol).

Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs. This includes adverse effect of correct substance properly administered, poisoning by overdose of substance, poisoning by wrong substance given or taken in error, and underdosing by (inadvertently) or (deliberately) taking less substance than prescribed or instructed.

Example 1: A patient accidentally takes an extra dose of their prescribed antidysrhythmic medication (other than a beta-blocker or metaraminol) and experiences symptoms such as dizziness and nausea., A patient is administered the wrong antidysrhythmic medication (other than a beta-blocker or metaraminol) in the hospital and develops an adverse reaction, requiring further treatment., A patient intentionally takes an overdose of their prescribed antidysrhythmic medication (other than a beta-blocker or metaraminol) and presents to the emergency department with severe symptoms.

Documentation should include the specific antidysrhythmic drug involved, the route of administration, the dosage taken (if known), the time of ingestion or administration, the patient's symptoms and clinical findings, and any treatment provided.

** Excludes1: poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists (T44.7-) and poisoning by, adverse effect of and underdosing of metaraminol (T44.4).Also excludes birth trauma (P10-P15), obstetric trauma (O70-O71), toxic reaction to local anesthesia in pregnancy (O29.3-), abuse and dependence of psychoactive substances (F10-F19), abuse of non-dependence-producing substances (F55.-), immunodeficiency due to drugs (D84.821), drug reaction and poisoning affecting newborn (P00-P96), and pathological drug intoxication (inebriation) (F10-F19).

  • Payment Status: Active
  • Specialties:Cardiology, Emergency Medicine, Internal Medicine, Toxicology, Critical Care Medicine
  • Place of Service:Inpatient Hospital, Emergency Room - Hospital, Office, Home, Other Place of Service
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