epSOS
This clinical statement represents that an allergy or adverse reaction exists or does not exist. The agent that is the cause of the allergy or adverse reaction is represented as a manufactured material participant playing entity in the allergy observation. While the agent is often implicit in the alert observation (e.g. ""allergy to penicillin""), it should also
be asserted explicitly as an entity. The manufactured material participant is used to represent natural and non-natural occurring substances. NOTE: The agent responsible for an allergy or adverse reaction is not always a manufactured material (for example, food allergies), nor is it necessarily consumed. The following constraints reflect limitations in the base CDA R2
specification, and should be used to represent any type of responsible agent.