Poisn by oth drug aff the autonm nervous sys, undet, init

This code signifies an accidental or intentional poisoning by a medication that primarily impacts the autonomic nervous system, where the intent (e.g., accidental, intentional self-harm, assault) cannot be determined. The patient is in the active phase of treatment for the poisoning.

Apply this code when a patient presents with symptoms of poisoning from an autonomic nervous system drug, and the medical record does not clearly state whether the poisoning was accidental, intentional self-harm, or assault. This is appropriate for the initial visit or encounter where the poisoning is being treated.

• Always sequence this code first if it is the primary reason for the encounter.
• Do not use this code if the intent of the poisoning is clearly documented (e.g., accidental, intentional self-harm).
• Ensure documentation supports the "undetermined" intent and the "initial encounter" status.