Poisn by multiple unsp drug/meds/biol subst, assault, init

This code signifies a patient presenting with adverse effects resulting from the intentional administration of several unknown or unspecified substances, including drugs, medications, or biological agents, with the intent to harm. The patient is in the initial phase of receiving active treatment for this poisoning.

This code is appropriate when a patient is admitted or seen for acute poisoning due to multiple, unidentified substances, and the medical record clearly documents the poisoning as an assault. It is used for the initial encounter where diagnostic workup and treatment for the poisoning are actively being performed.

• Ensure documentation explicitly states "assault" as the intent of the poisoning.
• Only use this code when the specific drugs, medicaments, or biological substances involved are not identified.
• This "A" seventh character indicates the initial encounter for treatment; subsequent encounters would require different seventh characters.