Poisoning by mixed viral-rickettsial and bacterial vaccines, except combinations with a pertussis component

This code signifies an adverse reaction or poisoning resulting from the administration of a vaccine containing a combination of viral, rickettsial, and bacterial components, specifically excluding those formulations that also include a pertussis component. It indicates a systemic or localized toxic effect rather than an allergic reaction or vaccine failure.

Use this code when a patient presents with symptoms of poisoning directly attributable to a multi-component vaccine, such as MMRV, DTaP-IPV-Hib, or similar, where pertussis is not part of the bacterial component. Documentation should clearly state "poisoning by vaccine" or "adverse effect of vaccine" with specific mention of the vaccine type and the absence of a pertussis component if applicable.

• Differentiate from allergic reactions (995.20-995.29) or other adverse effects not classified as poisoning.
• Ensure the vaccine administered did not contain a pertussis component; if it did, a different code would be appropriate.
• Always sequence this code as a secondary diagnosis, following the code for the specific manifestation of the poisoning.