ele-1:All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1:Must have either extensions or value[x], not both extension.exists() != value.exists()
Mappings
rim:n/a
rim:N/A
url
1..1
Fixed Value
Element Id
Extension.url
Short description
identifies the meaning of the extension
Definition
Source of the definition for the extension code - a logical name or a URL.
Comments
The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
