2025 ICD-10-CM code T46.2X5D

Adverse effect of other antidysrhythmic drugs, subsequent encounter.

Use a secondary code from Chapter 20 (External causes of morbidity) to indicate the cause of the adverse effect, if known.Do not use T46.2X5D for the initial encounter for the adverse effect; instead, use T46.2X5A.If the adverse effect results in a sequela, use T46.2X5S.

Medical necessity for the use of T46.2X5D is established by the presence of an adverse effect caused by an antidysrhythmic drug (other than beta-blockers and metaraminol) and the need for ongoing care for the adverse effect.The documentation must support the diagnosis and the need for continued treatment.

The provider is responsible for documenting the specific adverse effect, the antidysrhythmic drug causing the effect, and the relationship between the drug and the adverse effect.They should also document the treatment provided for the adverse effect.

In simple words: This code indicates a negative reaction to a heart rhythm medication (excluding beta-blockers and metaraminol) that the patient has been treated for before.

This code represents an adverse effect resulting from the use of antidysrhythmic drugs, excluding beta-blockers and metaraminol. It is used for subsequent encounters related to the adverse effect, indicating the patient has previously received care for this condition.

Example 1: A patient who previously experienced dizziness and lightheadedness after starting amiodarone (an antidysrhythmic drug) presents for a follow-up appointment to discuss management of the side effects., A patient was previously hospitalized for bradycardia after taking sotalol (an antidysrhythmic drug). They are now seen in the cardiology clinic for ongoing monitoring of their heart rhythm and medication adjustment., A patient who initially experienced skin rash and itching after starting procainamide (an antidysrhythmic drug) presents to their dermatologist for a follow-up appointment. The rash has worsened, requiring additional treatment.

The documentation should clearly state the adverse effect, the causal relationship between the antidysrhythmic drug and the adverse effect, and the treatment provided for the adverse effect.The specific antidysrhythmic drug should be named in the record.

** The "X" in the code allows for future expansion and greater specificity in classifying adverse effects of other antidysrhythmic drugs. The 7th character "D" indicates a subsequent encounter, meaning the patient has received care for this condition in the past.

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