WHO Digital Documentation of COVID-19 Certificates (DDCC)
1.0.0 - CI Build
WHO Digital Documentation of COVID-19 Certificates (DDCC)
1.0.0 - CI Build
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
| Official URL: http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSet | Version: 1.0.0 | |||
| Draft as of 2025-03-10 | Computable Name: DDCCCoreDataSet | |||
Data elements for the DDCC Core Data Set.
Usage:
Description of Profiles, Differentials, Snapshots and how the different presentations work.
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  DDCCCoreDataSet |
0..* | Base | This is an abstract type. Child types: DDCCCoreDataSetTR, DDCCCoreDataSetVS DDCC Core Data Set Logical Model | |
  name |
Σ | 1..1 | string | Name |
| birthDate |
Σ | 0..1 | date | Date of birth |
 identifier |
Σ | 0..1 | Identifier | Unique identifier |
 certificate |
Σ | 0..1 | BackboneElement | Certificate Metadata ele-1: All FHIR elements must have a @value or children |
 @id |
0..1 | string | Unique id for inter-element referencing | |
 extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both | |
 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 |
 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 ele-1: All FHIR elements must have a @value or children per-1: If present, start SHALL have a lower value than end |
| @id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both | |
| start |
ΣC | 0..1 | dateTime | Certificate valid from ele-1: All FHIR elements must have a @value or children |
 end |
ΣC | 0..1 | dateTime | Certificate valid until ele-1: All FHIR elements must have a @value or children |
| Documentation for this format | ||||
| Id | Grade | Path(s) | Details | Requirements |
| 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() | |
| per-1 | error | DDCCCoreDataSet.certificate.period | If present, start SHALL have a lower value than end : start.hasValue().not() or end.hasValue().not() or (start <= end) |