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

This code signifies a long-term consequence or complication arising from an intentional self-harm poisoning event involving an unspecified drug that primarily impacts the autonomic nervous system. The initial acute poisoning has resolved, but the patient is now presenting with a residual condition directly attributable to that past event.

Use this code when documenting a sequela (e.g., chronic neurological deficit, persistent organ damage) that is a direct result of a past intentional self-harm poisoning by an unspecified autonomic nervous system drug. This applies to follow-up encounters where the focus is on managing these lasting effects, not the acute poisoning itself.

• Ensure the medical record clearly links the current condition as a sequela to a past intentional self-harm poisoning.
• Do not use this code for the initial acute poisoning event; that would require an acute poisoning code.
• Always sequence this code after the code for the specific sequela being treated (e.g., chronic arrhythmia, nerve damage).