Name Flags Card. Type Description & Constraints doco
. . DomainResource I Resource A resource with narrative, extensions, and contained resources
If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated
If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource
If the resource is contained in another resource, it SHALL NOT contain nested Resources
If the resource is contained in another resource, it SHALL NOT contain any narrative
. . . text I 0..1 Narrative Text summary of the resource, for human interpretation
. . . contained 0..* Resource Contained, inline Resources
. . . extension 0..* Extension Additional Content defined by implementations
. . . modifierExtension ?! 0..* Extension Extensions that cannot be ignored

doco Documentation for this format