Poisn by unsp drugs aff the autonm nervous sys, asslt, init

This code signifies a patient presenting with adverse effects from an unknown drug that primarily targets the autonomic nervous system, where the poisoning was intentionally inflicted by another person. The patient is in the initial phase of receiving active treatment for this assault.

This code is appropriate for emergency department visits or initial hospital admissions where a patient has been poisoned by an unidentified autonomic nervous system-affecting drug, and the medical record clearly documents the poisoning as an assault. It is used when the specific drug responsible for the poisoning is not yet known or documented.

• Ensure documentation explicitly states "assault" as the intent of the poisoning.
• Only use the "A" seventh character for the initial encounter for active treatment.
• Avoid using this code if a more specific drug or drug class is identified in the medical record.