Clinical Document Architecture, published by Health Level 7. This guide is not an authorized publication; it is the continuous build for version 2.0.1-sd built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/CDA-core-sd/ and changes regularly. See the Directory of published versions
Guidance on how to interpret the contents of this table can be found here
0. string
XML Format
In the XML format, this property has the namespace urn:hl7-org:v3.
Invariants
uid-pattern: Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) (matches('^([0-2](\\.(0|[1-9][0-9]*))+)|([0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12})|([A-Za-z][A-Za-z0-9\\-]*)$'))
ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) uid-pattern: Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) (matches('^([0-2](\\.(0|[1-9][0-9]*))+)|([0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12})|([A-Za-z][A-Za-z0-9\\-]*)$'))
2. string.id
Definition
unique id for the element within a resource (for internal references)
Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short
xml:id (or equivalent in JSON)Unique id for inter-element referencing
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 managable, 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.
Short
ExtensionAdditional content defined by implementations
Comments
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.
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())
Guidance on how to interpret the contents of this table can be found here
0. string
Definition
A sequence of Unicode characters
Short
Primitive Type string
Comments
Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) uid-pattern: Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) (matches('^([0-2](\\.(0|[1-9][0-9]*))+)|([0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12})|([A-Za-z][A-Za-z0-9\\-]*)$'))
2. string.id
Definition
unique id for the element within a resource (for internal references)
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())