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

This code signifies an adverse event resulting from the unintentional administration or ingestion of a pertussis-containing vaccine. This includes situations where the vaccine itself, or a combination vaccine that includes a pertussis component, causes a toxic reaction or poisoning due to an accidental overdose, incorrect route, or other unintended exposure. The patient is experiencing the initial effects of this poisoning.

Use this code when a patient presents with symptoms of poisoning directly attributable to an accidental exposure to a pertussis vaccine or a combination vaccine containing pertussis. This applies to scenarios such as an accidental overdose of the vaccine, accidental ingestion, or administration via an incorrect route leading to systemic toxic effects. It is specifically for the initial presentation and treatment of such an event.

• Always assign an additional code(s) for the specific manifestation(s) of the poisoning.
• Distinguish this from adverse effects of correctly administered vaccines, which would use codes from the T80.8- series.
• Ensure documentation clearly specifies "accidental" or "unintentional" exposure to the vaccine.