Projo FHIR Documentation
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Extension: Preferred Language (Experimental)

Official URL: https://projo.evoleen.com/fhir/StructureDefinition/preferred-language Version: 0.1.0
Draft as of 2024-01-01 Computable Name: PreferredLanguage

Copyright/Legal: Copyright (c) Projo. Licensed under CC0-1.0 (public domain dedication). FHIR(R) is the registered trademark of HL7 and is used with permission. This IG references WhatsApp(R), a trademark of Meta Platforms, Inc., for descriptive purposes only.

Default preferred language for onboarded patients of this Organization. ISO 639-1 (e.g. 'de', 'en'). Set by operators at Organization creation time. Projo never writes this extension — only reads it. Read by buildPatient during identity resolution: getOrganizationPreferredLanguage reads the extension and stamps it onto Patient.communication[0].language.coding[0].code with preferred=true. If absent, the Patient is created without communication preferences and the sidecar's resolvePatientLanguage falls back to 'en'. The patient can later change their language via the dermacare-language-selection Questionnaire, which uses extraction-writeback (target=subject, mode=fill-if-empty) to update Patient.communication.language.

Documentation-only artifact. Projo's runtime extensions, code systems, identifier systems and search parameter are TypeScript constants and bootstrap-time resources, NOT deployed StructureDefinitions. This StructureDefinition exists to document the contract; the source of truth is src/functions/src/lib/fhir/types.ts and docs/FHIR_EXTENSIONS.md.

Context of Use

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

Usage info

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension Preferred Language
... extension 0..0 Extension
... url 1..1 uri "https://projo.evoleen.com/fhir/StructureDefinition/preferred-language"
... value[x] 1..1 string Value of extension

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension Preferred Language
... 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://projo.evoleen.com/fhir/StructureDefinition/preferred-language"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: Default preferred language for onboarded patients of this Organization. ISO 639-1 (e.g. 'de', 'en'). Set by operators at Organization creation time. Projo never writes this extension — only reads it. Read by buildPatient during identity resolution: getOrganizationPreferredLanguage reads the extension and stamps it onto Patient.communication[0].language.coding[0].code with preferred=true. If absent, the Patient is created without communication preferences and the sidecar's resolvePatientLanguage falls back to 'en'. The patient can later change their language via the dermacare-language-selection Questionnaire, which uses extraction-writeback (target=subject, mode=fill-if-empty) to update Patient.communication.language.

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension Preferred Language
... extension 0..0 Extension
... url 1..1 uri "https://projo.evoleen.com/fhir/StructureDefinition/preferred-language"
... value[x] 1..1 string Value of extension

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension Preferred Language
... 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://projo.evoleen.com/fhir/StructureDefinition/preferred-language"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: Default preferred language for onboarded patients of this Organization. ISO 639-1 (e.g. 'de', 'en'). Set by operators at Organization creation time. Projo never writes this extension — only reads it. Read by buildPatient during identity resolution: getOrganizationPreferredLanguage reads the extension and stamps it onto Patient.communication[0].language.coding[0].code with preferred=true. If absent, the Patient is created without communication preferences and the sidecar's resolvePatientLanguage falls back to 'en'. The patient can later change their language via the dermacare-language-selection Questionnaire, which uses extraction-writeback (target=subject, mode=fill-if-empty) to update Patient.communication.language.

 

Other representations of profile: CSV, Excel, Schematron

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()