CH EKM (R4)
0.0.1 - ci-build Switzerland flag

CH EKM (R4), published by Federal Office of Public Health FOPH. This guide is not an authorized publication; it is the continuous build for version 0.0.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/ahdis/ch-ekm/ and changes regularly. See the Directory of published versions

Extension: CH EKM Extension: Exposure Address

Official URL: http://fhir.ch/ig/ch-ekm/StructureDefinition/ch-ekm-ext-exposure-address Version: 0.0.1
Draft as of 2026-08-12 Computable Name: ChEkmExtExposureAddress

Copyright/Legal: CC0-1.0

This CH EKM extension enables to provide the exposure address (the place where the patient was most likely exposed, form item 'Exposition: wo'). The country is given as an ISO 3166 code in Address.country plus the coded country in the iso21090-codedString extension; the precise location goes into Address.city. When the place of exposure is reported as unknown, the Address carries a data-absent-reason - on its own if nothing else was reported, or alongside a country/location that was reported as well (the form's 'Unbekannt' box does not suppress the other answers, see issue #26).

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 CH EKM Extension: Exposure Address
... extension 0..0 Extension
... url 1..1 uri "http://fhir.ch/ig/ch-ekm/StructureDefinition/ch-ekm-ext-exposure-address"
... value[x] 1..1 Address Exposure address
.... Slices for extension Content/Rules for all slices
..... extension:unknown 0..1 code Place of exposure unknown (e.g. asked-unknown)
URL: http://hl7.org/fhir/StructureDefinition/data-absent-reason
Binding: DataAbsentReason (required)
.... city 0..1 string Precise location of exposure (Genauer Ort), in Switzerland/Liechtenstein or abroad
.... country
..... Slices for extension 0..* Extension Extension
Slice: Unordered, Open by value:url
...... extension:countryCoding 0..1 Coding Country of exposure as a Coding (ISO 3166)
URL: http://hl7.org/fhir/StructureDefinition/iso21090-codedString
Binding Description: (example): A coded representation for a string. Could be codes for country in a country address part, codes for prefixes in a name part, etc.

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension CH EKM Extension: Exposure Address
... id 0..1 string Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url 1..1 uri "http://fhir.ch/ig/ch-ekm/StructureDefinition/ch-ekm-ext-exposure-address"
.... id 0..1 string Unique id for inter-element referencing
.... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... extension:unknown 0..1 code Place of exposure unknown (e.g. asked-unknown)
URL: http://hl7.org/fhir/StructureDefinition/data-absent-reason
Binding: DataAbsentReason (required)
.... use ?!Σ 0..1 code home | work | temp | old | billing - purpose of this address
Binding: AddressUse (required): The use of an address.
Example General: home
.... type Σ 0..1 code postal | physical | both
Binding: AddressType (required): The type of an address (physical / postal).
Example General: both
.... text Σ 0..1 string Text representation of the address
Example General: 137 Nowhere Street, Erewhon 9132
.... line Σ 0..* string Street name, number, direction & P.O. Box etc.
This repeating element order: The order in which lines should appear in an address label
Example General: 137 Nowhere Street
.... city Σ 0..1 string Precise location of exposure (Genauer Ort), in Switzerland/Liechtenstein or abroad
Example General: Erewhon
.... district Σ 0..1 string District name (aka county)
Example General: Madison
.... state Σ 0..1 string Sub-unit of country (abbreviations ok)
.... postalCode Σ 0..1 string Postal code for area
Example General: 9132
.... country Σ 0..1 string Country (e.g. can be ISO 3166 2 or 3 letter code)
..... id 0..1 string xml:id (or equivalent in JSON)
..... Slices for extension 0..* Extension Extension
Slice: Unordered, Open by value:url
...... extension:countryCoding 0..1 Coding Country of exposure as a Coding (ISO 3166)
URL: http://hl7.org/fhir/StructureDefinition/iso21090-codedString
Binding Description: (example): A coded representation for a string. Could be codes for country in a country address part, codes for prefixes in a name part, etc.
..... value 0..1 string Primitive value for string
Max Length:1048576
.... period Σ 0..1 Period Time period when address was/is in use
Example General: {"start":"2010-03-23","end":"2010-07-01"}

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Address: This CH EKM extension enables to provide the exposure address (the place where the patient was most likely exposed, form item 'Exposition: wo'). The country is given as an ISO 3166 code in Address.country plus the coded country in the iso21090-codedString extension; the precise location goes into Address.city. When the place of exposure is reported as unknown, the Address carries a data-absent-reason - on its own if nothing else was reported, or alongside a country/location that was reported as well (the form's 'Unbekannt' box does not suppress the other answers, see issue #26).

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension CH EKM Extension: Exposure Address
... extension 0..0 Extension
... url 1..1 uri "http://fhir.ch/ig/ch-ekm/StructureDefinition/ch-ekm-ext-exposure-address"
... value[x] 1..1 Address Exposure address
.... Slices for extension Content/Rules for all slices
..... extension:unknown 0..1 code Place of exposure unknown (e.g. asked-unknown)
URL: http://hl7.org/fhir/StructureDefinition/data-absent-reason
Binding: DataAbsentReason (required)
.... city 0..1 string Precise location of exposure (Genauer Ort), in Switzerland/Liechtenstein or abroad
.... country
..... Slices for extension 0..* Extension Extension
Slice: Unordered, Open by value:url
...... extension:countryCoding 0..1 Coding Country of exposure as a Coding (ISO 3166)
URL: http://hl7.org/fhir/StructureDefinition/iso21090-codedString
Binding Description: (example): A coded representation for a string. Could be codes for country in a country address part, codes for prefixes in a name part, etc.

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension CH EKM Extension: Exposure Address
... id 0..1 string Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url 1..1 uri "http://fhir.ch/ig/ch-ekm/StructureDefinition/ch-ekm-ext-exposure-address"
.... id 0..1 string Unique id for inter-element referencing
.... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... extension:unknown 0..1 code Place of exposure unknown (e.g. asked-unknown)
URL: http://hl7.org/fhir/StructureDefinition/data-absent-reason
Binding: DataAbsentReason (required)
.... use ?!Σ 0..1 code home | work | temp | old | billing - purpose of this address
Binding: AddressUse (required): The use of an address.
Example General: home
.... type Σ 0..1 code postal | physical | both
Binding: AddressType (required): The type of an address (physical / postal).
Example General: both
.... text Σ 0..1 string Text representation of the address
Example General: 137 Nowhere Street, Erewhon 9132
.... line Σ 0..* string Street name, number, direction & P.O. Box etc.
This repeating element order: The order in which lines should appear in an address label
Example General: 137 Nowhere Street
.... city Σ 0..1 string Precise location of exposure (Genauer Ort), in Switzerland/Liechtenstein or abroad
Example General: Erewhon
.... district Σ 0..1 string District name (aka county)
Example General: Madison
.... state Σ 0..1 string Sub-unit of country (abbreviations ok)
.... postalCode Σ 0..1 string Postal code for area
Example General: 9132
.... country Σ 0..1 string Country (e.g. can be ISO 3166 2 or 3 letter code)
..... id 0..1 string xml:id (or equivalent in JSON)
..... Slices for extension 0..* Extension Extension
Slice: Unordered, Open by value:url
...... extension:countryCoding 0..1 Coding Country of exposure as a Coding (ISO 3166)
URL: http://hl7.org/fhir/StructureDefinition/iso21090-codedString
Binding Description: (example): A coded representation for a string. Could be codes for country in a country address part, codes for prefixes in a name part, etc.
..... value 0..1 string Primitive value for string
Max Length:1048576
.... period Σ 0..1 Period Time period when address was/is in use
Example General: {"start":"2010-03-23","end":"2010-07-01"}

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Address: This CH EKM extension enables to provide the exposure address (the place where the patient was most likely exposed, form item 'Exposition: wo'). The country is given as an ISO 3166 code in Address.country plus the coded country in the iso21090-codedString extension; the precise location goes into Address.city. When the place of exposure is reported as unknown, the Address carries a data-absent-reason - on its own if nothing else was reported, or alongside a country/location that was reported as well (the form's 'Unbekannt' box does not suppress the other answers, see issue #26).

 

Other representations of profile: CSV, Excel, Schematron

Terminology Bindings

Path Status Usage ValueSet Version Source
Extension.value[x].use Base required AddressUse 📍4.0.1 FHIR Std.
Extension.value[x].type Base required AddressType 📍4.0.1 FHIR Std.

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()