Clinical assessment of the severity of a reaction event as a whole, potentially considering multiple different manifestations.
This value set has an inline code system http://hl7.org/fhir/reaction-event-severity, which defines the following codes:
| Code | Display | Definition |
| mild | Mild | Causes mild physiological effects. |
| moderate | Moderate | Causes moderate physiological effects. |
| severe | Severe | Causes severe physiological effects. |