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/tree/main and changes regularly. See the Directory of published versions

Resource Profile: DDCC Document

Official URL: http://smart.who.int/ddcc/StructureDefinition/DDCCDocument Version: 1.0.0
Draft as of 2025-03-10 Computable Name: DDCCDocument

A DDCC Document is a document bundle containing the DDCC.

Usage:

Formal Views of Profile Content

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

NameFlagsCard.TypeDescription & Constraintsdoco
.. Bundle SC 0..* Bundle DDCC Document
bdl-1: total only when a search or history
bdl-2: entry.search only when a search
bdl-3: entry.request mandatory for batch/transaction/history, otherwise prohibited
bdl-4: entry.response mandatory for batch-response/transaction-response/history, otherwise prohibited
bdl-7: FullUrl must be unique in a bundle, or else entries with the same fullUrl must have different meta.versionId (except in history bundles)
bdl-9: A document must have an identifier with a system and a value
bdl-10: A document must have a date
bdl-11: A document must have a Composition as the first resource
bdl-12: A message must have a MessageHeader as the first resource
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
ele-1: All FHIR elements must have a @value or children
... identifier SΣ 1..1 Identifier Persistent identifier for the bundle
ele-1: All FHIR elements must have a @value or children
... type SΣ 1..1 code document | message | transaction | transaction-response | batch | batch-response | history | searchset | collection
Binding: BundleType (required): Indicates the purpose of a bundle - how it is intended to be used.


ele-1: All FHIR elements must have a @value or children
Required Pattern: document
... Slices for link Σ 1..* BackboneElement Links related to this Bundle
Slice: Unordered, Open by value:relation
ele-1: All FHIR elements must have a @value or children
.... link:All Slices Content/Rules for all slices
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
..... relation Σ 1..1 string See http://www.iana.org/assignments/link-relations/link-relations.xhtml#link-relations-1
ele-1: All FHIR elements must have a @value or children
..... url Σ 1..1 uri Reference details for the link
ele-1: All FHIR elements must have a @value or children
.... link:hcid Σ 1..1 BackboneElement Links related to this Bundle
ele-1: All FHIR elements must have a @value or children
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
..... relation Σ 1..1 string See http://www.iana.org/assignments/link-relations/link-relations.xhtml#link-relations-1
ele-1: All FHIR elements must have a @value or children
Required Pattern: publication
..... url Σ 1..1 uri Reference details for the link
ele-1: All FHIR elements must have a @value or children
... Slices for entry ΣC 3..* BackboneElement Entry in the bundle - will have a resource or information
Slice: Unordered, Open by type:resource
bdl-5: must be a resource unless there's a request or response
bdl-8: fullUrl cannot be a version specific reference
ele-1: All FHIR elements must have a @value or children
This repeating element order: For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type
.... entry:All Slices Content/Rules for all slices
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
.... entry:ddccComposition ΣC 1..1 BackboneElement Entry in the bundle - will have a resource or information
bdl-5: must be a resource unless there's a request or response
bdl-8: fullUrl cannot be a version specific reference
ele-1: All FHIR elements must have a @value or children
This repeating element order: For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
..... resource 0..1 DDCCComposition A set of resources composed into a single coherent clinical statement with clinical attestation
.... entry:ddccPatient ΣC 1..1 BackboneElement Entry in the bundle - will have a resource or information
bdl-5: must be a resource unless there's a request or response
bdl-8: fullUrl cannot be a version specific reference
ele-1: All FHIR elements must have a @value or children
This repeating element order: For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
..... resource 0..1 DDCCPatient Information about an individual or animal receiving health care services
.... entry:ddccOrganization ΣC 1..1 BackboneElement Entry in the bundle - will have a resource or information
bdl-5: must be a resource unless there's a request or response
bdl-8: fullUrl cannot be a version specific reference
ele-1: All FHIR elements must have a @value or children
This repeating element order: For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
..... resource 0..1 DDCCOrganization A grouping of people or organizations with a common purpose
.... entry:ddccQR ΣC 0..* BackboneElement Entry in the bundle - will have a resource or information
bdl-5: must be a resource unless there's a request or response
bdl-8: fullUrl cannot be a version specific reference
ele-1: All FHIR elements must have a @value or children
This repeating element order: For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
..... resource 0..1 DDCCDocumentReferenceQR A reference to a document
... signature SΣ 0..1 Signature Digital Signature
ele-1: All FHIR elements must have a @value or children

doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / CodeURI
Bundle.typerequiredPattern: document
http://hl7.org/fhir/ValueSet/bundle-type|4.0.1
from the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
bdl-1errorBundletotal only when a search or history
: total.empty() or (type = 'searchset') or (type = 'history')
bdl-2errorBundleentry.search only when a search
: entry.search.empty() or (type = 'searchset')
bdl-3errorBundleentry.request mandatory for batch/transaction/history, otherwise prohibited
: entry.all(request.exists() = (%resource.type = 'batch' or %resource.type = 'transaction' or %resource.type = 'history'))
bdl-4errorBundleentry.response mandatory for batch-response/transaction-response/history, otherwise prohibited
: entry.all(response.exists() = (%resource.type = 'batch-response' or %resource.type = 'transaction-response' or %resource.type = 'history'))
bdl-5errorBundle.entry, Bundle.entry:ddccComposition, Bundle.entry:ddccPatient, Bundle.entry:ddccOrganization, Bundle.entry:ddccQRmust be a resource unless there's a request or response
: resource.exists() or request.exists() or response.exists()
bdl-7errorBundleFullUrl must be unique in a bundle, or else entries with the same fullUrl must have different meta.versionId (except in history bundles)
: (type = 'history') or entry.where(fullUrl.exists()).select(fullUrl&resource.meta.versionId).isDistinct()
bdl-8errorBundle.entry, Bundle.entry:ddccComposition, Bundle.entry:ddccPatient, Bundle.entry:ddccOrganization, Bundle.entry:ddccQRfullUrl cannot be a version specific reference
: fullUrl.contains('/_history/').not()
bdl-9errorBundleA document must have an identifier with a system and a value
: type = 'document' implies (identifier.system.exists() and identifier.value.exists())
bdl-10errorBundleA document must have a date
: type = 'document' implies (timestamp.hasValue())
bdl-11errorBundleA document must have a Composition as the first resource
: type = 'document' implies entry.first().resource.is(Composition)
bdl-12errorBundleA message must have a MessageHeader as the first resource
: type = 'message' implies entry.first().resource.is(MessageHeader)
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()

 

Other representations of profile: CSV, Excel, Schematron