Name Flags Card. Type Description & Constraints v2DataTypeDefinition 0..* Base Base for all types and resources Instances of this logical model are not marked to be the target of a Reference code Σ 1..1 string This is the two or three letter code for the data type. title Σ 1..1 string This is a short human readable text for this data type. description 0..1 Narrative withdrawn 1..1 boolean completeExample 0..* Narrative component 1..* BackboneElement sequenceNumber Σ 1..1 positiveInt element[x] Σ 1..1 string Either a simple datatype, or a complext one as a reference. definition 0..1 Narrative implement 0..1 CodeableConcept Binding: v2plus-implement (required) minLength 0..1 integer maxLength 0..1 integer confLength 0..1 integer mayTruncate 0..1 boolean indicates whether this information can be truncated. Default value is false. exampleValue 0..* string comments 0..* string usageNotes 0..* string requirements 0..* string binding 0..1 canonical(ValueSet) Bound value set mayRepeat 0..1 boolean indicates that this field may repeat if defined as such, and if occuring as last. Default value is false. Documentation for this format
Base definition for all types defined in FHIR type system.
This is the two or three letter code for the data type.
This is a short human readable text for this data type.
All FHIR elements must have a @value or children
hasValue() or (children().count() > id.count())
Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Extensions are always sliced by (at least) url
Additional content defined by implementations
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.
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.
Must have either extensions or value[x], not both
Extensions that cannot be ignored even if unrecognized
May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension).
Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Either a simple datatype, or a complext one as a reference.
indicates whether this information can be truncated. Default value is false.
indicates that this field may repeat if defined as such, and if occuring as last. Default value is false.