Once a concept exists, which identifies the reference set being populated, the individual reference set members can be added as rows to the associated reference set file.

In this section, we discuss an example reference set, and explain how its members are represented in an extension.

Simple Reference Set

The table below shows a set of rows from a  | Simple type reference set|  in the 20170430 Canadian extension.

Table 4.3.2.3-1: Fragment of the |Route of administration reference set| from the 20170430 Canadian extension

Please note the following:

• All reference set members have a unique UUID.
• The effectiveTime and active values indicate that these rows were active from 20170430.
• The moduleId indicates that these rows belong to the | Canada Health Infoway Reference Set Module| .
• The refsetId indicates that each member belongs to the  | Route of administration reference set| .
• The referencedComponentId column refers to the concept that the given reference set member is referencing. Note that most of the referenced components are international concepts, while the referencedComponentId in the last row refers to a concept created in the Canadian extension. Please also note that the version of the referenced component that is referred to is established according to the dependencies defined in the | Module dependency reference set| .