WHO Digital Documentation of COVID-19 Certificates (DDCC)
1.0.0 - CI Build International flag

WHO Digital Documentation of COVID-19 Certificates (DDCC), published by WHO. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/WorldHealthOrganization/ddcc/ and changes regularly. See the Directory of published versions

Logical Model: DDCC Core Data Set Logical Model for Test Result ( Abstract )

Official URL: http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetTR Version: 1.0.0
Draft as of 2025-06-24 Computable Name: DDCCCoreDataSetTR

Data elements for the DDCC Core Data Set for Test Result.

Usages:

  • This Logical Model is not used by any profiles in this Implementation Guide

Formal Views of Profile Content

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

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. DDCCCoreDataSet 0..* DDCCCoreDataSet This is an abstract type.
Elements defined in Ancestors:name, birthDate, identifier, certificate
DDCC Core Data Set Logical Model for Test Result
... name Σ 1..1 string Name
... birthDate Σ 0..1 date Date of birth
... identifier Σ 0..1 Identifier Unique identifier
.... @id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... issuer Σ 1..1 Reference(DDCC Organization) Certificate issuer
.... kid 0..1 string Key ID used to verify the signature of the certificate
.... hcid Σ 1..1 Identifier Health certificate identifier (HCID)
.... ddccid Σ 0..1 Identifier DDCC Identifier
.... version Σ 1..1 string Certificate schema version
.... period C 0..1 Period Certificate Validity Period
Constraints: per-1
..... @id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... start ΣC 0..1 dateTime Certificate valid from
..... end ΣC 0..1 dateTime Certificate valid until
... test Σ 1..1 BackboneElement Test Event
.... @id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... pathogen Σ 1..1 Coding Pathogen targeted
Binding: WHO Agent Targeted (COVID-19) (preferred)
.... type Σ 1..1 Coding Type of test
Binding: WHO Type of Covid-19 Test (preferred)
.... brand Σ 0..1 Coding Test brand
.... manufacturer Σ 0..1 Coding Test manufacturer
.... origin Σ 0..1 Coding Specimen Sample Origin
Binding: WHO Speciman Sample Origin (COVID-19) (preferred)
.... date Σ 1..1 dateTime Date and time of sample collection
.... result 0..1 Coding Test result
Binding: WHO Test Result (COVID-19) (preferred)
.... centre 0..1 Coding Test centre or facility name
.... country Σ 1..1 Coding Test centre country
Binding: Iso3166-1-3 (preferred)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
DDCCCoreDataSet.test.pathogenpreferredWHODDCCAgentTargetedCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCAgentTargetedCOVID19
From this IG
DDCCCoreDataSet.test.typepreferredWHODDCCTypeofTestCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCTypeofTestCOVID19
From this IG
DDCCCoreDataSet.test.originpreferredWHODDCCSampleOriginCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCSampleOriginCOVID19
From this IG
DDCCCoreDataSet.test.resultpreferredWHODDCCTestResultCOVID19
http://smart.who.int/ddcc/ValueSet/who-ddcc-test-result-covid-19
From this IG
DDCCCoreDataSet.test.countrypreferredIso3166-1-3
http://hl7.org/fhir/ValueSet/iso3166-1-3
From the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
per-1errorDDCCCoreDataSet.certificate.periodIf present, start SHALL have a lower value than end
: start.hasValue().not() or end.hasValue().not() or (start <= end)

This structure is derived from DDCCCoreDataSet

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. DDCCCoreDataSet 0..* DDCCCoreDataSet This is an abstract type.
Elements defined in Ancestors:name, birthDate, identifier, certificate
DDCC Core Data Set Logical Model for Test Result
... test Σ 1..1 BackboneElement Test Event
.... pathogen Σ 1..1 Coding Pathogen targeted
Binding: WHO Agent Targeted (COVID-19) (preferred)
.... type Σ 1..1 Coding Type of test
Binding: WHO Type of Covid-19 Test (preferred)
.... brand Σ 0..1 Coding Test brand
.... manufacturer Σ 0..1 Coding Test manufacturer
.... origin Σ 0..1 Coding Specimen Sample Origin
Binding: WHO Speciman Sample Origin (COVID-19) (preferred)
.... date Σ 1..1 dateTime Date and time of sample collection
.... result 0..1 Coding Test result
Binding: WHO Test Result (COVID-19) (preferred)
.... centre 0..1 Coding Test centre or facility name
.... country Σ 1..1 Coding Test centre country
Binding: Iso3166-1-3 (preferred)

doco Documentation for this format

Terminology Bindings (Differential)

PathConformanceValueSetURI
DDCCCoreDataSet.test.pathogenpreferredWHODDCCAgentTargetedCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCAgentTargetedCOVID19
From this IG
DDCCCoreDataSet.test.typepreferredWHODDCCTypeofTestCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCTypeofTestCOVID19
From this IG
DDCCCoreDataSet.test.originpreferredWHODDCCSampleOriginCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCSampleOriginCOVID19
From this IG
DDCCCoreDataSet.test.resultpreferredWHODDCCTestResultCOVID19
http://smart.who.int/ddcc/ValueSet/who-ddcc-test-result-covid-19
From this IG
DDCCCoreDataSet.test.countrypreferredIso3166-1-3
http://hl7.org/fhir/ValueSet/iso3166-1-3
From the FHIR Standard
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. DDCCCoreDataSet 0..* DDCCCoreDataSet This is an abstract type.
Elements defined in Ancestors:name, birthDate, identifier, certificate
DDCC Core Data Set Logical Model for Test Result
... name Σ 1..1 string Name
... birthDate Σ 0..1 date Date of birth
... identifier Σ 0..1 Identifier Unique identifier
.... @id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... issuer Σ 1..1 Reference(DDCC Organization) Certificate issuer
.... kid 0..1 string Key ID used to verify the signature of the certificate
.... hcid Σ 1..1 Identifier Health certificate identifier (HCID)
.... ddccid Σ 0..1 Identifier DDCC Identifier
.... version Σ 1..1 string Certificate schema version
.... period C 0..1 Period Certificate Validity Period
Constraints: per-1
..... @id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... start ΣC 0..1 dateTime Certificate valid from
..... end ΣC 0..1 dateTime Certificate valid until
... test Σ 1..1 BackboneElement Test Event
.... @id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... pathogen Σ 1..1 Coding Pathogen targeted
Binding: WHO Agent Targeted (COVID-19) (preferred)
.... type Σ 1..1 Coding Type of test
Binding: WHO Type of Covid-19 Test (preferred)
.... brand Σ 0..1 Coding Test brand
.... manufacturer Σ 0..1 Coding Test manufacturer
.... origin Σ 0..1 Coding Specimen Sample Origin
Binding: WHO Speciman Sample Origin (COVID-19) (preferred)
.... date Σ 1..1 dateTime Date and time of sample collection
.... result 0..1 Coding Test result
Binding: WHO Test Result (COVID-19) (preferred)
.... centre 0..1 Coding Test centre or facility name
.... country Σ 1..1 Coding Test centre country
Binding: Iso3166-1-3 (preferred)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
DDCCCoreDataSet.test.pathogenpreferredWHODDCCAgentTargetedCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCAgentTargetedCOVID19
From this IG
DDCCCoreDataSet.test.typepreferredWHODDCCTypeofTestCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCTypeofTestCOVID19
From this IG
DDCCCoreDataSet.test.originpreferredWHODDCCSampleOriginCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCSampleOriginCOVID19
From this IG
DDCCCoreDataSet.test.resultpreferredWHODDCCTestResultCOVID19
http://smart.who.int/ddcc/ValueSet/who-ddcc-test-result-covid-19
From this IG
DDCCCoreDataSet.test.countrypreferredIso3166-1-3
http://hl7.org/fhir/ValueSet/iso3166-1-3
From the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
per-1errorDDCCCoreDataSet.certificate.periodIf present, start SHALL have a lower value than end
: start.hasValue().not() or end.hasValue().not() or (start <= end)

This structure is derived from DDCCCoreDataSet

Summary

Mandatory: 0 element(5 nested mandatory elements)

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. DDCCCoreDataSet 0..* DDCCCoreDataSet This is an abstract type.
Elements defined in Ancestors:name, birthDate, identifier, certificate
DDCC Core Data Set Logical Model for Test Result
... name Σ 1..1 string Name
... birthDate Σ 0..1 date Date of birth
... identifier Σ 0..1 Identifier Unique identifier
.... @id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... issuer Σ 1..1 Reference(DDCC Organization) Certificate issuer
.... kid 0..1 string Key ID used to verify the signature of the certificate
.... hcid Σ 1..1 Identifier Health certificate identifier (HCID)
.... ddccid Σ 0..1 Identifier DDCC Identifier
.... version Σ 1..1 string Certificate schema version
.... period C 0..1 Period Certificate Validity Period
Constraints: per-1
..... @id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... start ΣC 0..1 dateTime Certificate valid from
..... end ΣC 0..1 dateTime Certificate valid until
... test Σ 1..1 BackboneElement Test Event
.... @id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... pathogen Σ 1..1 Coding Pathogen targeted
Binding: WHO Agent Targeted (COVID-19) (preferred)
.... type Σ 1..1 Coding Type of test
Binding: WHO Type of Covid-19 Test (preferred)
.... brand Σ 0..1 Coding Test brand
.... manufacturer Σ 0..1 Coding Test manufacturer
.... origin Σ 0..1 Coding Specimen Sample Origin
Binding: WHO Speciman Sample Origin (COVID-19) (preferred)
.... date Σ 1..1 dateTime Date and time of sample collection
.... result 0..1 Coding Test result
Binding: WHO Test Result (COVID-19) (preferred)
.... centre 0..1 Coding Test centre or facility name
.... country Σ 1..1 Coding Test centre country
Binding: Iso3166-1-3 (preferred)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
DDCCCoreDataSet.test.pathogenpreferredWHODDCCAgentTargetedCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCAgentTargetedCOVID19
From this IG
DDCCCoreDataSet.test.typepreferredWHODDCCTypeofTestCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCTypeofTestCOVID19
From this IG
DDCCCoreDataSet.test.originpreferredWHODDCCSampleOriginCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCSampleOriginCOVID19
From this IG
DDCCCoreDataSet.test.resultpreferredWHODDCCTestResultCOVID19
http://smart.who.int/ddcc/ValueSet/who-ddcc-test-result-covid-19
From this IG
DDCCCoreDataSet.test.countrypreferredIso3166-1-3
http://hl7.org/fhir/ValueSet/iso3166-1-3
From the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
per-1errorDDCCCoreDataSet.certificate.periodIf present, start SHALL have a lower value than end
: start.hasValue().not() or end.hasValue().not() or (start <= end)

Differential View

This structure is derived from DDCCCoreDataSet

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. DDCCCoreDataSet 0..* DDCCCoreDataSet This is an abstract type.
Elements defined in Ancestors:name, birthDate, identifier, certificate
DDCC Core Data Set Logical Model for Test Result
... test Σ 1..1 BackboneElement Test Event
.... pathogen Σ 1..1 Coding Pathogen targeted
Binding: WHO Agent Targeted (COVID-19) (preferred)
.... type Σ 1..1 Coding Type of test
Binding: WHO Type of Covid-19 Test (preferred)
.... brand Σ 0..1 Coding Test brand
.... manufacturer Σ 0..1 Coding Test manufacturer
.... origin Σ 0..1 Coding Specimen Sample Origin
Binding: WHO Speciman Sample Origin (COVID-19) (preferred)
.... date Σ 1..1 dateTime Date and time of sample collection
.... result 0..1 Coding Test result
Binding: WHO Test Result (COVID-19) (preferred)
.... centre 0..1 Coding Test centre or facility name
.... country Σ 1..1 Coding Test centre country
Binding: Iso3166-1-3 (preferred)

doco Documentation for this format

Terminology Bindings (Differential)

PathConformanceValueSetURI
DDCCCoreDataSet.test.pathogenpreferredWHODDCCAgentTargetedCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCAgentTargetedCOVID19
From this IG
DDCCCoreDataSet.test.typepreferredWHODDCCTypeofTestCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCTypeofTestCOVID19
From this IG
DDCCCoreDataSet.test.originpreferredWHODDCCSampleOriginCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCSampleOriginCOVID19
From this IG
DDCCCoreDataSet.test.resultpreferredWHODDCCTestResultCOVID19
http://smart.who.int/ddcc/ValueSet/who-ddcc-test-result-covid-19
From this IG
DDCCCoreDataSet.test.countrypreferredIso3166-1-3
http://hl7.org/fhir/ValueSet/iso3166-1-3
From the FHIR Standard

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. DDCCCoreDataSet 0..* DDCCCoreDataSet This is an abstract type.
Elements defined in Ancestors:name, birthDate, identifier, certificate
DDCC Core Data Set Logical Model for Test Result
... name Σ 1..1 string Name
... birthDate Σ 0..1 date Date of birth
... identifier Σ 0..1 Identifier Unique identifier
.... @id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... issuer Σ 1..1 Reference(DDCC Organization) Certificate issuer
.... kid 0..1 string Key ID used to verify the signature of the certificate
.... hcid Σ 1..1 Identifier Health certificate identifier (HCID)
.... ddccid Σ 0..1 Identifier DDCC Identifier
.... version Σ 1..1 string Certificate schema version
.... period C 0..1 Period Certificate Validity Period
Constraints: per-1
..... @id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... start ΣC 0..1 dateTime Certificate valid from
..... end ΣC 0..1 dateTime Certificate valid until
... test Σ 1..1 BackboneElement Test Event
.... @id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... pathogen Σ 1..1 Coding Pathogen targeted
Binding: WHO Agent Targeted (COVID-19) (preferred)
.... type Σ 1..1 Coding Type of test
Binding: WHO Type of Covid-19 Test (preferred)
.... brand Σ 0..1 Coding Test brand
.... manufacturer Σ 0..1 Coding Test manufacturer
.... origin Σ 0..1 Coding Specimen Sample Origin
Binding: WHO Speciman Sample Origin (COVID-19) (preferred)
.... date Σ 1..1 dateTime Date and time of sample collection
.... result 0..1 Coding Test result
Binding: WHO Test Result (COVID-19) (preferred)
.... centre 0..1 Coding Test centre or facility name
.... country Σ 1..1 Coding Test centre country
Binding: Iso3166-1-3 (preferred)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
DDCCCoreDataSet.test.pathogenpreferredWHODDCCAgentTargetedCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCAgentTargetedCOVID19
From this IG
DDCCCoreDataSet.test.typepreferredWHODDCCTypeofTestCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCTypeofTestCOVID19
From this IG
DDCCCoreDataSet.test.originpreferredWHODDCCSampleOriginCOVID19
http://smart.who.int/ddcc/ValueSet/WHODDCCSampleOriginCOVID19
From this IG
DDCCCoreDataSet.test.resultpreferredWHODDCCTestResultCOVID19
http://smart.who.int/ddcc/ValueSet/who-ddcc-test-result-covid-19
From this IG
DDCCCoreDataSet.test.countrypreferredIso3166-1-3
http://hl7.org/fhir/ValueSet/iso3166-1-3
From the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
per-1errorDDCCCoreDataSet.certificate.periodIf present, start SHALL have a lower value than end
: start.hasValue().not() or end.hasValue().not() or (start <= end)

This structure is derived from DDCCCoreDataSet

Summary

Mandatory: 0 element(5 nested mandatory elements)

 

Other representations of profile: CSV, Excel