HEARTLAND FHIR candidate 0.3.0 — draft, experimental R4 4.0.1 reference. Prepared for technical review; not evidence of clinical validation or vendor interoperability.

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Extension: HEARTLAND Synthetic County Identifier (Experimental)

Opaque synthetic identifier emitted by HEARTLAND Synthetic, not an ANSI/FIPS county GEOID, postal code, or evidence of real residence. Preserve the code as supplied; no real-geography lookup or linkage is implied.

Context of Use

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

• Element ID: Patient.address

In addition, the extension can only be used when this FHIRPath expression is true:

extension.where(url = 'https://fhir.heartlandprotocol.org/StructureDefinition/heartland-synthetic-county-code').count() = 1

Usage info

Usages:

• Use this Extension: HEARTLAND Patient
• Examples for this Extension: Patient/PatientExampleRural

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and their representations.

• Differential Table
• Snapshot Table
• Statistics/References
• AllAll

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension	C	0..1	Extension	HEARTLAND Synthetic County Identifier Constraints: heartland-county-value
extension		0..0		Extension
url		1..1	uri	"https://fhir.heartlandprotocol.org/StructureDefinition/heartland-synthetic-county-code"
value[x]		1..1	Coding	Value of extension
system		1..1	uri	Identity of the terminology system Fixed Value: https://fhir.heartlandprotocol.org/sid/synthetic-county-code
code		1..1	code	Symbol in syntax defined by the system
Documentation for this format

Constraints

Id	Grade	Path(s)	Description	Expression
heartland-county-value	error	Extension	The synthetic identifier must contain actual system and code values.	value.system.hasValue() and value.code.hasValue()

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension	C	0..1	Extension	HEARTLAND Synthetic County Identifier Constraints: heartland-county-value
id		0..1	string	Unique id for inter-element referencing
extension		0..0		Extension Slice: Unordered, Open by value:url
url		1..1	uri	"https://fhir.heartlandprotocol.org/StructureDefinition/heartland-synthetic-county-code"
value[x]		1..1	Coding	Value of extension
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: https://fhir.heartlandprotocol.org/sid/synthetic-county-code
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
Documentation for this format

Constraints

Id	Grade	Path(s)	Description	Expression
heartland-county-value	error	Extension	The synthetic identifier must contain actual system and code values.	value.system.hasValue() and value.code.hasValue()

Summary

Simple Extension with the type Coding: Opaque synthetic identifier emitted by HEARTLAND Synthetic, not an ANSI/FIPS county GEOID, postal code, or evidence of real residence. Preserve the code as supplied; no real-geography lookup or linkage is implied.

Differential ViewDifferential View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension	C	0..1	Extension	HEARTLAND Synthetic County Identifier Constraints: heartland-county-value
extension		0..0		Extension
url		1..1	uri	"https://fhir.heartlandprotocol.org/StructureDefinition/heartland-synthetic-county-code"
value[x]		1..1	Coding	Value of extension
system		1..1	uri	Identity of the terminology system Fixed Value: https://fhir.heartlandprotocol.org/sid/synthetic-county-code
code		1..1	code	Symbol in syntax defined by the system
Documentation for this format

Constraints

Id	Grade	Path(s)	Description	Expression
heartland-county-value	error	Extension	The synthetic identifier must contain actual system and code values.	value.system.hasValue() and value.code.hasValue()

Snapshot View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension	C	0..1	Extension	HEARTLAND Synthetic County Identifier Constraints: heartland-county-value
id		0..1	string	Unique id for inter-element referencing
extension		0..0		Extension Slice: Unordered, Open by value:url
url		1..1	uri	"https://fhir.heartlandprotocol.org/StructureDefinition/heartland-synthetic-county-code"
value[x]		1..1	Coding	Value of extension
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: https://fhir.heartlandprotocol.org/sid/synthetic-county-code
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
Documentation for this format

Constraints

Id	Grade	Path(s)	Description	Expression
heartland-county-value	error	Extension	The synthetic identifier must contain actual system and code values.	value.system.hasValue() and value.code.hasValue()

Summary

Simple Extension with the type Coding: Opaque synthetic identifier emitted by HEARTLAND Synthetic, not an ANSI/FIPS county GEOID, postal code, or evidence of real residence. Preserve the code as supplied; no real-geography lookup or linkage is implied.

Other representations of profile: CSV, Excel, Schematron