cdaefa:EFA Metadata Bindings

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Mapping of Core Information Model Classes

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This section defines the XDS-Metadata bindings for the classes of the EFA core information model.

The following table describes how EFA classes MUST be mapped to classes and object types of IHE ITI.

EFA core information model	IHE ITI
Patient	Patient
eCR CaseRecord	Set of Folder-objects, that have values of Folder.patientID and Folder.codeList in common
eCR Partition	Folder
eCR Medical Data Object	DocumentEntry for metadata, Document for binary data

The object type SubmissionSet of IHE ITI has no corresponding class of the EFA core information model. Therefore, SubmissionSet SHALL be used as specified in IHE ITI but it MUST NOT have EFA semantics.

Mapping of PIM Classes

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This section defines the XDS-Metadata bindings for the classes of the EFA platform independent model.

Instances of ECR PIM Classes are shared through XD* transactions and within XD* metadata. The following table shows the respective binding of these classes to IHE XD* message arguments and ebRS metadata slots/elements.

EFA PIM	IHE ITI Metadata Model	Comments
patientID	Folder.patientId DocumentEntry.patientId	-
communityID	DocumentEntry.homeCommunityId Folder.homeCommunityId	-
purpose	Folder.codeList	see XDS Folder Metadata
consentInfo	Document	ECR consentInfo objects are represented as structured, coded documents. See "Leitfaden Patienteneinwilligung" for details. The binding of consentInfo is not subject to the EFA Specification. An EFA domain must agree on a specific binding. Implementation Guide for CDA®, Release 2: Consent Directives, Release 1 MAY be used.
consentDoc	Document	Consent documents are represented as documents of a format that is to be agreed by each ECR domain (e.g. PDF/A).
partitionID	Folder.uniqueId	see IHE ITI TF Vol3 section 4.1.9.1 for details
partitionList	set of Folder objects	-
ecrRef	Folder.patientId Folder.codeList Folder.homeCommunityId	Folders that have the same patient ID and the same purpose codes form a distinct case record. The homeCommunityId indicates the XDS Affinity Domain where the reference is valid.
partitionInfo	Folder	see XDS Folder Metadata for details
docMetadata	DocumentEntry	see XDS Document Metadata for details
docRelationship	Document Relationship	see Append and Replace in IHE ITI TF-3#4.1.2
documentID	DocumentEntry.uniqueId DocumentEntry.repositoryUniqueId	shall be used for document retrieval (retrieveDocument transaction).
	DocumentEntry.entryUUID	shall be used for document referral (associations between registry entries)

MountPoint

Instances of the EFA PIM class MountPoint SHALL be bound to DocumentEntry as follows:

ECR PIM MountPoint attribute	IHE XDS Metadata Attribute	Comments
patientID	DocumentEntry.patientId
sourcePatientID	DocumentEntry.sourcePatientId
communityID	DocumentEntry.homeCommunityId

The DocumentEntry SHALL be a member of a Folder. This Folder SHALL have a codeList classification containing

• (code="ECR-mountpoint", codeSystem="IHE-D-Cookbook-FolderClassCode") and
• a purpose code.

ecrStatus

The EFA PIM class ecrStatus MUST be implemented by means of access policies. The values of ecrStatus MUST correspond to access policies and system configuration as follows:

Open

The access policy implements the patient's consent.

Suspended

The access policy implements the patient's consent with the exception that only the consented case record manager and their substitutes are authorized.

Retired

No access policy permits access to the case record.

Archived

No XDS metadata and no documents reside in the EFA system.

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