Poisoning by benzodiazepine-based tranquilizers

This code signifies an adverse physiological reaction resulting from the ingestion, injection, or exposure to benzodiazepine medications in a dose or manner that is harmful. This includes both accidental and intentional overdoses, as well as adverse effects from therapeutic use when the intent was not to harm. The patient exhibits symptoms of toxicity related to central nervous system depression, such as drowsiness, confusion, ataxia, or respiratory depression.

Use this code when documentation clearly indicates a patient's condition is due to poisoning by a benzodiazepine. This applies to scenarios like accidental overdose, suicide attempts involving benzodiazepines, or adverse drug reactions where the drug caused a toxic effect. Supporting documentation should detail the substance involved (e.g., diazepam, lorazepam, alprazolam) and the resulting clinical manifestations.

• Always code the specific benzodiazepine involved if known, using an E-code for external cause of poisoning.
• Distinguish between poisoning (toxic effect) and adverse effect in therapeutic use (non-toxic reaction), which would typically be coded differently.
• Sequence this code as the principal diagnosis when the poisoning is the primary reason for the encounter.