Poisn by unsp drugs aff the autonm nrv sys, slf-hrm, init

This code signifies a deliberate act of self-poisoning using a medication that primarily impacts the autonomic nervous system, where the specific drug involved is not identified. The patient is in the initial phase of treatment for this acute event.

Apply this code when a patient presents to an emergency department or is admitted for an intentional overdose of an unknown drug that is known to affect the autonomic nervous system. This is appropriate when the intent is clearly self-harm and the encounter is for the initial management of the poisoning.

• Ensure documentation clearly states "intentional self-harm" or "suicide attempt."
• Only use this code if the specific drug is truly unknown; otherwise, a more specific code is required.
• "Initial encounter" indicates the patient is receiving active treatment for the poisoning.