Poisoning by cardiac rhythm regulators

This code signifies an adverse health effect resulting from the ingestion, exposure, or improper administration of medications specifically designed to regulate heart rhythm. It encompasses both accidental and intentional poisonings, leading to toxic effects on the cardiovascular system or other organ systems.

Apply this code when documentation clearly indicates a patient's condition is due to an overdose or adverse reaction to antiarrhythmic drugs, such as amiodarone, digoxin, or procainamide. This includes situations where the drug was prescribed but taken in excess, or when it was ingested inadvertently.

• Always sequence this code first when it represents the primary reason for the encounter, followed by codes for specific manifestations of the poisoning.
• Distinguish between poisoning (adverse effect due to overdose/toxicity) and adverse effect in therapeutic use (e.g., side effect at correct dosage).
• Ensure documentation specifies the drug involved and the nature of the poisoning (accidental, intentional, undetermined).