Adverse effect of mixed bact vaccines w/o a pertuss, subs

This code signifies an undesirable or harmful reaction experienced by a patient due to a mixed bacterial vaccine that specifically excludes a pertussis component. These adverse effects are not due to improper administration but are inherent risks associated with the vaccine itself.

This code is used when a patient presents for follow-up care or management of an adverse reaction to a mixed bacterial vaccine (e.g., some typhoid or cholera vaccines) where the pertussis component is absent. It is appropriate for subsequent encounters related to the initial adverse event, such as monitoring symptoms, adjusting treatment, or documenting resolution.

• Ensure the documentation clearly states the reaction is an adverse effect, not poisoning or underdosing.
• Verify the vaccine administered was a mixed bacterial type and explicitly lacked a pertussis component.
• Confirm this is a subsequent encounter for the adverse effect, as indicated by the 7th character "D".