Point-of-Care Device Implementation Guide, published by HL7 International / Devices. This guide is not an authorized publication; it is the continuous build for version 1.0.0-ballot3 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/uv-pocd/ and changes regularly. See the Directory of published versions

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Extension: Reference range extension

StructureDefinition that adds a typed reference range (low, high, and range type) to a DeviceMetric.

Context of Use

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

• Element ID: DeviceMetric

Usage info

Usages:

• Use this Extension: Numeric DeviceMetric profile
• Examples for this Extension: DeviceMetric/HeartRateNumericDeviceMetric

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	C	0..*	Extension	Typed reference range Constraints: pocd-rr-1
Slices for extension		1..*	Extension	Extension Slice: Unordered, Open by value:url
extension:low		0..1	Extension	Low limit
url		1..1	uri	"low"
valueQuantity		1..1	SimpleQuantity	Value of extension
extension:high		0..1	Extension	High limit
url		1..1	uri	"high"
valueQuantity		1..1	SimpleQuantity	Value of extension
extension:type		1..1	Extension	Range type
url		1..1	uri	"type"
valueCodeableConcept		1..1	CodeableConcept	Value of extension Binding: Reference Range Type (extensible): Type of reference range applied to a DeviceMetric.
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/reference-range"
value[x]		0..0		Value of extension
Documentation for this format

Terminology Bindings (Differential)

Path	Status	Usage	ValueSet	Version	Source
Extension.extension:type.​valueCodeableConcept	Base	extensible	Reference Range Type	📦1.0.0-ballot3	This IG

Constraints

Id	Grade	Path(s)	Description	Expression
pocd-rr-1	error	Extension	At least one of low or high limit shall be present	extension('low').exists() or extension('high').exists()

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension	C	0..*	Extension	Typed reference range Constraints: pocd-rr-1
id		0..1	string	Unique id for inter-element referencing
Slices for extension		1..*	Extension	Extension Slice: Unordered, Open by value:url
extension:low		0..1	Extension	Low limit
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
url		1..1	uri	"low"
Slices for value[x]		1..1	Quantity	Value of extension Slice: Unordered, Closed by type:$this
Slices for value[x]				Content/Rules for all slices
value[x]:valueQuantity		1..1	SimpleQuantity	Value of extension
extension:high		0..1	Extension	High limit
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
url		1..1	uri	"high"
Slices for value[x]		1..1	Quantity	Value of extension Slice: Unordered, Closed by type:$this
Slices for value[x]				Content/Rules for all slices
value[x]:valueQuantity		1..1	SimpleQuantity	Value of extension
extension:type		1..1	Extension	Range type
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
url		1..1	uri	"type"
Slices for value[x]		1..1	CodeableConcept	Value of extension Slice: Unordered, Closed by type:$this
Slices for value[x]				Content/Rules for all slices
value[x]:valueCodeableConcept		1..1	CodeableConcept	Value of extension Binding: Reference Range Type (extensible): Type of reference range applied to a DeviceMetric.
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/reference-range"
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Extension.extension:type.​value[x]:valueCodeableConcept	Base	extensible	Reference Range Type	📦1.0.0-ballot3	This IG

Constraints

Id	Grade	Path(s)	Description	Expression
pocd-rr-1	error	Extension	At least one of low or high limit shall be present	extension('low').exists() or extension('high').exists()

Summary

Complex Extension: StructureDefinition that adds a typed reference range (low, high, and range type) to a DeviceMetric.

• low: Quantity: The lower bound of the reference range.
• high: Quantity: The upper bound of the reference range.
• type: CodeableConcept: Classifies the reference range as alarm limits, physiological range, or technical range.

Maturity: 2

Differential ViewDifferential View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension	C	0..*	Extension	Typed reference range Constraints: pocd-rr-1
Slices for extension		1..*	Extension	Extension Slice: Unordered, Open by value:url
extension:low		0..1	Extension	Low limit
url		1..1	uri	"low"
valueQuantity		1..1	SimpleQuantity	Value of extension
extension:high		0..1	Extension	High limit
url		1..1	uri	"high"
valueQuantity		1..1	SimpleQuantity	Value of extension
extension:type		1..1	Extension	Range type
url		1..1	uri	"type"
valueCodeableConcept		1..1	CodeableConcept	Value of extension Binding: Reference Range Type (extensible): Type of reference range applied to a DeviceMetric.
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/reference-range"
value[x]		0..0		Value of extension
Documentation for this format

Terminology Bindings (Differential)

Path	Status	Usage	ValueSet	Version	Source
Extension.extension:type.​valueCodeableConcept	Base	extensible	Reference Range Type	📦1.0.0-ballot3	This IG

Constraints

Id	Grade	Path(s)	Description	Expression
pocd-rr-1	error	Extension	At least one of low or high limit shall be present	extension('low').exists() or extension('high').exists()

Snapshot View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension	C	0..*	Extension	Typed reference range Constraints: pocd-rr-1
id		0..1	string	Unique id for inter-element referencing
Slices for extension		1..*	Extension	Extension Slice: Unordered, Open by value:url
extension:low		0..1	Extension	Low limit
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
url		1..1	uri	"low"
Slices for value[x]		1..1	Quantity	Value of extension Slice: Unordered, Closed by type:$this
Slices for value[x]				Content/Rules for all slices
value[x]:valueQuantity		1..1	SimpleQuantity	Value of extension
extension:high		0..1	Extension	High limit
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
url		1..1	uri	"high"
Slices for value[x]		1..1	Quantity	Value of extension Slice: Unordered, Closed by type:$this
Slices for value[x]				Content/Rules for all slices
value[x]:valueQuantity		1..1	SimpleQuantity	Value of extension
extension:type		1..1	Extension	Range type
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
url		1..1	uri	"type"
Slices for value[x]		1..1	CodeableConcept	Value of extension Slice: Unordered, Closed by type:$this
Slices for value[x]				Content/Rules for all slices
value[x]:valueCodeableConcept		1..1	CodeableConcept	Value of extension Binding: Reference Range Type (extensible): Type of reference range applied to a DeviceMetric.
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/reference-range"
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Extension.extension:type.​value[x]:valueCodeableConcept	Base	extensible	Reference Range Type	📦1.0.0-ballot3	This IG

Constraints

Id	Grade	Path(s)	Description	Expression
pocd-rr-1	error	Extension	At least one of low or high limit shall be present	extension('low').exists() or extension('high').exists()

Summary

Complex Extension: StructureDefinition that adds a typed reference range (low, high, and range type) to a DeviceMetric.

• low: Quantity: The lower bound of the reference range.
• high: Quantity: The upper bound of the reference range.
• type: CodeableConcept: Classifies the reference range as alarm limits, physiological range, or technical range.

Maturity: 2

Other representations of profile: CSV, Excel, Schematron