Poisoning by mixed bact vaccines w/o a pertuss, undet, subs

This code indicates an adverse reaction or poisoning resulting from a mixed bacterial vaccine that specifically excludes a pertussis component. The circumstances surrounding the poisoning are not yet determined, meaning the intent (e.g., accidental, intentional self-harm, assault) is unknown. This code is used when the patient is receiving follow-up care for the initial poisoning event.

Apply this code when a patient presents for ongoing treatment or monitoring of symptoms related to an undetermined poisoning by a non-pertussis mixed bacterial vaccine. This would include scenarios where the patient is seen for complications, side effects, or continued management after the initial acute phase of the poisoning.

• Ensure the documentation clearly states the poisoning is from a mixed bacterial vaccine without a pertussis component.
• Confirm the intent of the poisoning is documented as "undetermined" and that this is a subsequent encounter for care.
• Always sequence this code after the primary diagnosis describing the specific manifestation of the poisoning, if applicable.