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

This code signifies a long-term health problem or complication resulting from an unconfirmed poisoning by a medication that primarily impacts the body's involuntary functions, such as heart rate, digestion, and breathing. The specific drug involved in the original poisoning event could not be identified or confirmed.

Use this code when documenting a patient presenting with a chronic condition or lasting effect directly attributable to a past poisoning by an unknown autonomic nervous system drug. This applies when the acute poisoning event has resolved, but its residual impact is still being managed. It is appropriate when the initial poisoning was not definitively linked to a specific substance.

• This code is for sequelae (S) and should only be used for conditions that are residual effects of a past poisoning.
• Ensure documentation clearly states the link between the current condition and a previous, undetermined poisoning by an autonomic drug.
• Do not use this code for acute poisoning events; instead, use the appropriate acute poisoning code.