|Element containting countrycodes from the official ValueSet definition for Iso 3166 Part 1: 3 Letter Codes|
|Definition||Element containting countrycodes from the official ValueSet definition for Iso 3166 Part 1: 3 Letter Codes|
|Definition||Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.|
|Definition||May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.|
|Alias||extensions, user content|
There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
|Slicing||Unordered, Open, by url(Value)|
|Definition||Source of the definition for the extension code - a logical name or a URL.|
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.
|Definition||Value of extension - must be one of a constrained set of the data types (see [Extensibility](extensibility.html) for a list).|
A stream of bytes, base64 encoded