Poisn by oth vaccines and biolg substnc, self-harm, sequela

This code signifies a long-term consequence or residual condition resulting from a deliberate act of self-poisoning using a vaccine or other biological substance. It indicates that the patient intentionally ingested, injected, or otherwise administered the substance to themselves with the intent to cause harm, and is now experiencing lasting effects from that event.

Apply this code when documenting a chronic or permanent health problem directly attributable to a past intentional self-poisoning with a vaccine or biological substance. This would be used for follow-up care or treatment of the sequela, not for the initial acute poisoning event itself. Examples include persistent organ damage, neurological deficits, or chronic immune responses stemming from the self-harm.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past intentional self-harm event involving a vaccine or biological substance.
• Do not use this code for accidental poisonings or adverse effects of properly administered substances.