The Organization resource is a formally or informally recognized grouping of people or organizations formed for the purpose of achieving some form of collective action. Includes companies, institutions, corporations, departments, community groups, healthcare practice groups, payer/insurer, etc.
The Organization resource often exists as a hierarchy of organization resources, using the part-of property to provide the association of the child to its parent organization. This organizational hierarchy helps communicate the conceptual structure, whereas the Location resource provides the physical representation of the hierarchy. The linkage between Organization and Location is from each point in the location hierarchy to the appropriate level in the Organization hierarchy. These links don’t all have to be to the top-level Organization. When populating the organization and location hierarchies there is often not a clear distinction between these two, however, to assist in making the decision, Locations are always used for recording where a service occurs, and hence where encounters and observations are associated. The Organization property on these resources might not be the location where the service took place.
This resource may be used in a shared registry of contact and other information for various organizations or it can be used merely as a support for other resources that need to reference organizations, perhaps as a document, message or as a contained resource. If using a registry approach, it’s entirely possible for multiple registries to exist, each dealing with different types or levels of organization.