GPs (often) record allergies using “Adverse reaction to/Allergy to X” codes, rather than recording the causative agent
e.g. 292954005 Adverse reaction to penicillins
I understand that it is possible to infer the causative agent from the above codes in the SNOMED hierarchy.
Is this your intention for populating the causative agent element?
Do you populate the reaction/manifestation element with the original code?