FHIR Tooling Extensions IG, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 1.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/FHIR/fhir-tools-ig/ and changes regularly. See the Directory of published versions

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Extension: Binding Definition

This provides a definition for a binding. There's really no functional difference between a definition and a description, and this extension will be removed in R6. No tools do anything with the binding definitions (they use binding.description instead).

Context of Use

This extension may be used on the following element(s)

• Element ID: ElementDefinition.binding

Usage info

Usages:

• Examples for this Extension: Basic, BiologicallyDerivedProductDispense, Observation Body Mass Index Profile, Observation Body Height Profile... Show 46 more, Observation Body Weight Profile, ChargeItem, Example Lipid Profile, Condition, Age, Attachment, Count, Duration, HumanName, MoneyQuantity, Quantity, Timing, DeviceMetric, DeviceUsage, DocumentReference, ElementDefinition, Encounter, Endpoint, FHIRPath Library, Observation Heart Rate Profile, ImagingSelection, ImagingStudy, Immunization, InventoryItem, Example Lipid Profile, Example Lipid Profile, Logic Library, MeasureReport, MedicationRequest, Availability, Expression, ExtendedContactDetail, ParameterDefinition, RelatedArtifact, Model Information Library, Narrative, NutritionOrder, Observation Oxygen Saturation Profile, Publishable ActivityDefinition, Publishable Measure, Publishable PlanDefinition, Reference, Observation Respiratory Rate Profile, Subscription, Task and Transport

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description Differentials, Snapshots, and other representations.

• Differential Table
• Snapshot Table
• Statistics/References
• All

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension		0..*	Extension	binding-definition
extension		0..0		Extension
url		1..1	uri	"http://hl7.org/fhir/tools/StructureDefinition/binding-definition"
value[x]		1..1	markdown	Value of extension
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension		0..*	Extension	binding-definition
id		0..1	id	Unique id for inter-element referencing
extension		0..0		Extension Slice: Unordered, Open by value:url
url		1..1	uri	"http://hl7.org/fhir/tools/StructureDefinition/binding-definition"
value[x]		1..1	markdown	Value of extension
Documentation for this format

Constraints

Id	Grade	Path(s)	Description	Expression
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both	extension.exists() != value.exists()

Summary

Simple Extension with the type markdown: This provides a definition for a binding. There's really no functional difference between a definition and a description, and this extension will be removed in R6. No tools do anything with the binding definitions (they use binding.description instead).

Maturity: 4

Differential ViewDifferential View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension		0..*	Extension	binding-definition
extension		0..0		Extension
url		1..1	uri	"http://hl7.org/fhir/tools/StructureDefinition/binding-definition"
value[x]		1..1	markdown	Value of extension
Documentation for this format

Snapshot View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension		0..*	Extension	binding-definition
id		0..1	id	Unique id for inter-element referencing
extension		0..0		Extension Slice: Unordered, Open by value:url
url		1..1	uri	"http://hl7.org/fhir/tools/StructureDefinition/binding-definition"
value[x]		1..1	markdown	Value of extension
Documentation for this format

Constraints

Id	Grade	Path(s)	Description	Expression
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both	extension.exists() != value.exists()

Summary

Simple Extension with the type markdown: This provides a definition for a binding. There's really no functional difference between a definition and a description, and this extension will be removed in R6. No tools do anything with the binding definitions (they use binding.description instead).

Maturity: 4

Other representations of profile: CSV, Excel, Schematron