Comment:

Missing AllergyIntolerance.substance

Users should be able to record substance(s) that a person is allergic to or intolerate with the condition and not be forced to record substances in the Reaction component.

Use case: second hand information (e.g. external discharge summary, legacy EMR) may only contain allergy/intolerance + substance information without reaction information

Summary:

Users should not be forced to record substance within the Reaction component when there is no reaction details available