Building blocks

Services are delivered through a set of reusable digital building blocks.

These building blocks represent modular capabilities that can be implemented independently while working together as an integrated whole. They enable flexibility in implementation while ensuring interoperability across countries and systems.

The architecture establishes separate regional registries for clients, healthcare providers, and healthcare facilities. Each registry maintains a regional unique identifier for its respective entity:

• RUCID — Regional Unique Client Identifier
• RUPID — Regional Unique Provider Identifier
• RUFID — Regional Unique Facility Identifier

Data consumption

Attribute	Content
Purpose	Enables healthcare professionals, systems, and patients to securely retrieve and use health information from local or cross-border sources.
Service	Cross-border healthcare service
Key information	-
Furfilled by	Healthcare providers, clients, EHRs, LIMSs, RISs, PACSs, public health systems, integration platforms
Regional constraints	List
Upstream dependencies	Data distribution, Data integration & adaption
Downstream dependencies	-
Interoperability requirements	HL7 FHIR, CDA, DICOM, IHE profiles, SNOMED CT, LOINC

Data distribution

Attribute	Content
Purpose	Facilitates secure distribution of healthcare information to organisations, regions, and countries.
Service	Cross-border data distribution service
Key information	Clinical record, lab result, radiology information, medical image, public health data
Furfilled by	EHRs, LIMSs, RISs, PACSs, public health systems, integration platforms
Regional constraints	List
Upstream dependencies	Authenication, Authorisation
Downstream dependencies	Data consumption, Data integration & adaption
Interoperability requirements	HL7 FHIR, CDA, DICOM, IHE profiles, SNOMED CT, LOINC

Data integration & adapter

Attribute	Content
Purpose	Translates, transforms, enriches, and orchestrates healthcare data between heterogeneous systems and standards.
Service	Data integration service
Key information	Message transformations, mappings, orchestration rules, canonical models
Furfilled by	Integration platforms
Regional constraints	List
Upstream dependencies	Data consumption, Data distribution, Authenication, Authorisation
Downstream dependencies	Data consumption, Data distribution, Authenication, Authorisation
Interoperability requirements	HL7 FHIR, CDA, DICOM, IHE profiles, SNOMED CT, LOINC

Authentication

Attribute	Content
Purpose	Verifies the identity of users, systems, and organisations accessing healthcare services.
Service	Shared healthcare service (authentication)
Key information	Credential Artifact, Trust Anchor
Furfilled by	Identity provider, Token service, MFA Engine
Regional constraints	List
Upstream dependencies	Client registration, Provider Registration, Facility registration
Downstream dependencies	Data distribution, Data integration & adaption
Interoperability requirements	OAuth2, OpenID Connect, SAML2, X.509, FIDO2/WebAuthn

Autorisation

Attribute	Content
Purpose	Determines whether authenticated users or systems are permitted to access specific healthcare data or services according to policy and consent.
Service	Shared healthcare service (autorisation)
Key information	Audit log
Furfilled by	Log aggregator, Log enrichment engine, Audit store, Altering engine (SIEM/SOAR)
Regional constraints	List
Upstream dependencies	Authentication, Consent registration
Downstream dependencies	Data distribution, Data integation & adaption
Interoperability requirements	Terminology, sematics, API's

Audit tracing

Attribute	Content
Purpose	Records and monitors healthcare data access and system activity for compliance, security, and forensic analysis.
Service	Shared healthcare service (audit tracing)
Regional constraints	List
Key information	List of main entities
Cross-border considerations	?
Upstream dependencies	Authenication, Authorisation
Downstream dependencies	-
Interoperability requirements	IHE ATNA, syslog, OpenTelemetry, FHIR AuditEvent

Consent registration

Attribute	Content
Purpose	Manages patient consent preferences for data sharing, processing, and cross-border access.
Service	Shared healthcare service (consent registration)
Key information	Data sharing consent
Furfilled by	Log aggregator, Log enrichment engine, Audit store, Altering engine (SIEM/SOAR)
Regional constraints	List
Upstream dependencies	Client registration
Downstream dependencies	Authoristation
Interoperability requirements	Terminology, sematics, API's

Client registration

Attribute	Content
Purpose	Maintains unique identification and demographic information for patients and citizens participating in healthcare services.
Service	Shared healthcare service (client registration)
Key information	Client
Furfilled by	-
Regional constraints	List
Upstream dependencies	Resident registration
Downstream dependencies	Authentication, Consent registration
Interoperability requirements	Terminology, sematics, API's

Healthcare provider registration

Attribute	Content
Purpose	Maintains trusted information about healthcare professionals and their credentials, affiliations, and permissions.
Service	Shared healthcare service (healthcare provider registration)
Key information	provider
Furfilled by	-
Regional constraints	List
Upstream dependencies	Resident registration
Downstream dependencies	Client registration, Authentication
Interoperability requirements	Terminology, sematics, API's

Facility registration

Attribute	Content
Purpose	Maintains trusted information about healthcare organisations, facilities, laboratories, and care locations.
Service	Shared healthcare service (facility registration)
Key information	facility
Furfilled by	-
Regional constraints	List
Upstream dependencies	-
Downstream dependencies	Authentication, Client registration
Interoperability requirements	Terminology, sematics, API's

Product catalogue

Attribute	Content
Purpose	Provides standardised reference information for medicines, medical devices, and healthcare products used across healthcare services.
Service	Shared healthcare service (product catalogue)
Key information	medicine, medical device
Furfilled by	-
Regional constraints	List
Upstream dependencies	-
Downstream dependencies	List of building blocks
Interoperability requirements	Terminology, sematics, API's

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