Poisn by pertuss vaccine, inc combin w pertuss, acc, subs

This code signifies an adverse reaction or poisoning resulting from the accidental administration of a pertussis-containing vaccine. It indicates that the patient is being seen for follow-up care related to this unintentional poisoning event.

Apply this code when a patient presents for ongoing management or evaluation of symptoms (e.g., fever, rash, localized reaction) that developed after an accidental overdose or incorrect administration of a pertussis vaccine. This is used for encounters subsequent to the initial treatment of the poisoning.

• Ensure documentation clearly states the poisoning was accidental and due to a pertussis vaccine.
• Confirm this is a subsequent encounter, not the initial visit for the poisoning.
• Pair with an external cause code (e.g., Y60-Y69 for misadventures to patients during surgical and medical care) to fully describe the circumstances.