RDC EMR Implementation Guide

Details

Extension
Short	Optional Extensions Element
Definition	Optional Extension Element - found in all resources.
Cardinality	0..*
Conditions	The cardinality or value of this element may be affected by these constraints: ele-1
Constraints	ele-1: All FHIR elements must have a @value or children `hasValue() \| (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
Extension.id
Short	xml:id (or equivalent in JSON)
Definition	unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0..1
Type	string
Mappings	rim: n/a
Extension.extension
Short	Additional Content defined by implementations
Definition	May be used to represent additional information that is not part of the basic definition of the element. In order 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0..*
Type	Extension
Alias	extensions, user content
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.
Slicing	Unordered, Open, by url(Value) Extensions are always sliced by (at least) url
Mappings	rim: n/a
Extension.url
Short	identifies the meaning of the extension
Definition	Source of the definition for the extension code - a logical name or a URL.
Cardinality	1..1
Type	uri
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.
Fixed Value	http://roche.com/fhir/rdc/StructureDefinition/observation-event-timing
Mappings	rim: N/A
Extension.value[x]:valueCodeableConcept
Short	Value of extension
Definition	Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).
Cardinality	1..1
Type	CodeableConcept
Mappings	rim: N/A
Extension.value[x]:valueCodeableConcept.id
Short	xml:id (or equivalent in JSON)
Definition	unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0..1
Type	string
Mappings	rim: n/a
Extension.value[x]:valueCodeableConcept.extension
Short	Additional Content defined by implementations
Definition	May be used to represent additional information that is not part of the basic definition of the element. In order 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0..*
Type	Extension
Alias	extensions, user content
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.
Slicing	Unordered, Open, by url(Value) Extensions are always sliced by (at least) url
Mappings	rim: n/a
Extension.value[x]:valueCodeableConcept.coding
Short	Code defined by a terminology system
Definition	A reference to a code defined by a terminology system.
Cardinality	0..*
Type	Coding
Binding	EventTimings (required)
Summary	True
Requirements	Allows for translations and alternate encodings within a code system. Also supports communication of the same instance to systems requiring different encodings.
Comments	Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Mappings	v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
Extension.value[x]:valueCodeableConcept.text
Short	Plain text representation of the concept
Definition	A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.
Cardinality	0..1
Type	string
Summary	True
Requirements	The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.
Comments	Very often the text is the same as a displayName of one of the codings.
Mappings	v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText