Specifications

AQL For discussions on the openEHR Archetype Query Language (AQL) specification. Please FORMAT your queries as MULTI-LINE! RM Discussions on the Reference Model (RM) specifications, including EHR model, Demographics, data types. Terminology Discussions on terminology use / interface / bindings in openEHR. Entity/demographics Discussions about openEHR Demographics and Entity models and more generally MPIs & similar. Task Planning/GDL Use this category for discussing the Task Planning and related specifications, as well as the Guideline Definition Language (GDL). ITS Discussions on any of the Implementation Technology Specifications, i.e. derivatives from the abstract specs, including REST APIs, XSD, JSON, and HL7 FHIR interfaces. ADL Discussions on the openEHR ‘AM’ component, i.e. any of the Archetype or Template specifications. SM For discussions of the openEHR Service Model (SM). BMM/Expressions Discussions on BMM and EL specifications.

Topic	Replies	Views	Activity
About the Specifications category Specifications	0	2379	26 October 2019
Terminology ids and namespaces (again) Specifications	2	45	5 November 2026
Filtering signed documents in AQL AQL aql	7	666	5 November 2026
Terminology_id name list Specifications	64	899	5 November 2026
Simplified Formats (FLAT) completing partial DV_CODED_TEXT input RM better , flat , ehrbase , ferroehr	0	43	30 October 2026
Where do you keep the AQL's ? AQL	27	644	27 October 2026
Should EVENT_CONTEXT.setting be made optional and/or it's associated terminology updated? RM	16	1530	16 October 2026
Specification AI tooling Specifications	0	61	9 October 2026
A new representation for specifications source and website Specifications specifications , bmm , uml	9	163	6 October 2026
Representing a business identifier for a procedure (EHDS header.identifier) in openEHR-EHR-ACTION.procedure Specifications archetype	4	133	6 October 2026
Questions about Invariants in RM and Foundation Types RM base	8	169	25 September 2026
Why is the DV_TEXT <value> element missing when mapping terminologies with ORDINAL? ADL template	6	158	19 September 2026
What should the canonical URL of an archetype-local value set be? Terminology archetype , identification , openehr-fhir	17	218	18 September 2026
Moved: Conformance - roadmap from here? Specifications	11	160	9 September 2026
Inconsistencies in openEHR specifications at the speed of AI Specifications	2	130	3 September 2026
Embedding of HTML in Markdown inside DV_TEXT Specifications	8	186	3 September 2026
Coding element and event names Specifications template	59	1524	28 August 2026
Semantics of `Void` Specifications base	7	150	26 August 2026
Question re the EHR class in the RM and the REST API RM	27	389	17 August 2026
Delete COMPOSITION mentions preceding_version_uid ITS rest-apis	2	60	16 August 2026
Should openEHR specify a rounding mode? Specifications	15	358	11 August 2026
Use the same parameter names for tag_key and key in ITEM_TAG endpoints ITS rest-apis	0	36	11 August 2026
How to query for compositions where fields are not null AQL aql	7	483	11 August 2026
Are AS aliases allowed in the WHERE clause AQL aql	0	45	7 August 2026
Proposal for a LET keyword in AQL AQL aql	7	100	7 August 2026
Posting IMPORTED_VERSION with CONTRIBUTION ITS rest-apis	2	56	6 August 2026
Should the UPDATE_VERSION.data in the openEHR REST API be required? ITS rest-apis	2	63	6 August 2026
OET format limitations — two cases where template constraints cannot be preserved Specifications	2	72	29 July 2026
Timezone of ISO 8601 Date Specifications base	10	1454	24 July 2026
`Operation` isn't specified in BMM nor in Foundation types, and Functional Meta-types uses BMM/Expressions	5	96	23 July 2026