Poisoning by measles vaccine

This code describes an adverse reaction or toxic effect resulting from the administration of a measles vaccine. This could manifest as systemic symptoms, localized reactions beyond expected soreness, or other physiological disturbances directly attributable to the vaccine's components or the body's response to them. It signifies a poisoning event rather than a typical allergic reaction or a therapeutic failure.

Use this code when documentation clearly indicates a patient experienced poisoning specifically due to a measles vaccine. This typically involves symptoms such as high fever, rash, neurological symptoms, or other severe systemic effects that are not typical post-vaccination side effects and are attributed by the clinician to a toxic reaction. Documentation should specify "poisoning by measles vaccine" or similar language indicating a toxic effect.

• Differentiate carefully between poisoning (toxic effect) and adverse effect (unintended but not necessarily toxic reaction) or allergic reaction.
• Always sequence this code as the primary diagnosis if it is the reason for the encounter.
• Do not use this code for typical, expected post-vaccination side effects like mild fever or localized soreness.