Poisoning by butyrophenone-based tranquilizers

This code signifies an adverse effect resulting from the ingestion or exposure to butyrophenone-based tranquilizers, whether accidental or intentional. It represents the toxic effects experienced by a patient due to an overdose or improper use of medications such as haloperidol or droperidol.

Use this code when documentation clearly indicates a patient presenting with signs and symptoms of poisoning specifically attributed to a butyrophenone tranquilizer. This typically includes altered mental status, extrapyramidal symptoms, or cardiovascular effects directly linked to the drug. Supporting documentation should specify the drug class and the nature of the poisoning (e.g., overdose, adverse reaction).

• Always sequence this code as a primary diagnosis when it is the reason for the encounter.
• Do not use this code for adverse effects of non-butyrophenone tranquilizers; refer to other specific drug poisoning codes.
• Ensure documentation differentiates between poisoning (toxic effect) and adverse effect (therapeutic dose reaction).