Straw Man2

This schema is based on minimal standard metadata, with additional name value pairs in the Reference ID fields to hold some or all of the following:

• Specialties (hierarchical and potentially multiple)
• References to "content" - such as PRSB sub-headings
• Pathway ID
• Episode, spell IDs etc. (as used in mental health/community)

Metadata summary # = searchable

Generic Requirement	Suggested XDS implementation	Open Issues
Patient demographics (global# and local IDs)	Standard XDS usage - Patient ID and source Patient info	Should local ID be searchable
Overall Coded Document Classification	Class Code (source TBD) & Type Code (from SNOMED "correspondence document type" subset)
Author(s)& Authenticator	Standard XDS representation, including person (name), role, specialty and institution & Legal Authenticator
Context * Environment	Healthcare Facility Type Code & Practice Setting Code	What is Healthcare Facility Type Code? IP/OP ??
Human readable summary for visual scanning	Title & Comments
Low level technical representation, location, Date time etc.	Format Code, Mime Type Availability Status Creation Time Entry UUID Hash Size Home Community ID Repository Unique ID UniqueID URI Language Code Service Start Time Service Stop Time
Confidentiality requirements	Confidentiality Code
Specialty-specific codes (e.g. modality/procedure/body part for radiology, or operation code for surgery)	EventCodeList
Speciality/"treatment function code"/"folder" - see note 1.	ReferenceIdList with multiple key-value pairs (in reality, coded values) - e.g. "Specialty=Surgery" "Specialty=Orthopaedic Surgery" "Specialty=Hip Surgery"	Single vs. Multi-level? Source?
Administrative "links" - e.g. accession number (lab and radiology) Pathway ID Visit and Episode IDs (mental health)	ReferenceIdList with key-value pairs (in reality, coded values)- e.g. Accession Number = 12345 Episode Number = ABC-1243-99
Contents included - see note 2.	ReferenceIdList with multiple key-value pairs (in reality, coded values)- e.g. SubSectionType = History SubSectionType = Problem List SubSectionType = Drugs on Discharge

Notes:

1 - Specialty

This is emerging as one of the most important search fields, and as shown in DocMan may need to have a different level of granularity for different users.

2 - Content

This would share codes with the PRSB headings/sub-headings to allow a user to locate a document which contains a particular type of data, irrespective of the document's nominal type.