Yes, it wasn’t part of STU3 (aka 3.0.1) but is now in the R4 spec - see http://build.fhir.org/snomedct.html#implicit
Michael Sent from my iPhone On 12 Mar 2018, at 8:39 pm, Diego Boscá <yamp...@gmail.com<mailto:yamp...@gmail.com>> wrote:https://www.hl7.org/fhir/snomedct.html#implicit Interesting to know, although I don't see that as an option in latest FHIR spec https://www.hl7.org/fhir/snomedct.html#implicit 2018-03-12 11:15 GMT+01:00 <michael.law...@csiro.au<mailto:michael.law...@csiro.au>>: FHIR also supports the expression language in the URL with, for example, http://snomed.info/sct?fhir_vs=ecl<http://snomed.info/sct?fhir_vs=ecl>/<<123464:474748=<<84848484 But note that these URIs (the above and your isa/ one below) are defined by HL7 FHIR, not SNOMED International. Technically they identify FHIR ValueSets that expand to the set of codes you want. You could do a lot worse than adopting the FHIR ValueSet mechanism for binding. There are some excellent terminology servers out there (full disclosure, one of them, Ontoserver, is mine). Michael Sent from my iPhone On 12 Mar 2018, at 7:00 pm, Diego Boscá <yamp...@gmail.com<mailto:yamp...@gmail.com>> wrote: Probably we should have a look at https://confluence.ihtsdotools.org/display/SLPG/SNOMED+CT+URI+Standard FHIR also uses the same base uri, but builds the URI using a custom syntax such as http://snomed.info/sct?fhir_vs=isa/138875005 But looking at the Snomed URI standard I assume they will just go with that in the future 2018-03-12 1:38 GMT+01:00 Pablo Pazos <pablo.pa...@cabolabs.com<mailto:pablo.pa...@cabolabs.com>>: Now that I have more experience with SNOMED expressions, I like the idea of doing the binding with an expression, also I think an expression includes the single code binding, if that is correct there is no need of defining a different notation for single code binding, just use a simple expression formed by one specific concept code. Also the expression being something processable and very versatile, we can express complex concepts with a few codes, which will help on adding knowledge to the archetype and serve to a better and simpler CDS. About the metadata, there should be expressed against which SNOMED release this expression was created. We can't be sure only with min version. I should be responsibility of the user to check if the expression works on a different version/release of SNOMED. Another metadata is if the version is a local extension, some countries have their own extensions. I don't know if we need to support other terminologies (technically) and if doing that is useful (strategically). Terminology services can do SNOMED to ICD, and ICD is not clinical relevant. LOINC is useful, but there is a SNOMED-LOINC collaboration, so we might expect an official mapping in the future (https://loinc.org/collaboration/snomed-international/). IMO we should focus on SNOMED. On Mon, Jul 17, 2017 at 11:19 AM, Thomas Beale <thomas.be...@openehr.org<mailto:thomas.be...@openehr.org>> wrote: Recently we discussed terminology bindings. We probably still have not got them right, but we don't have a model of what we think they should be. I posted a quick idea of a possible more structured version: term_bindings = < ["snomed_ct"] = < ["/data[id3]/events[id4]/data[id2]/items[id26]"] = (SIMPLE_BINDING) < target = <http://snomedct.info/id/169895004> -- Apgar score at 1 minute notes = <"some notes"> min_version = <"2017-02-01"> etc = <"etc"> > ["id26"] = (CONSTRAINT_BINDING) < target = <"71388002 |Procedure| : 405815000 |Procedure device| = 122456005 |Laser device| , 260686004 |Method| = 129304002 |Excision - action| ,405813007 |Procedure site - direct| = 1549700l6 |Ovarian structure|"> min_version = <"2017-04-01"> notes = <"some notes"> etc = <"etc"> > > > I noted that the right hand side of a binding can be a few different things, each of which would be accompanied by various meta-data, including: * a single concept code * a single code or other id referring to an external value set in an external terminology (in SNOMED it is a SNOMED code; for e.g. ICD10, there is no standard that I know of) * a composition expression that refers to a more refined concept * possible a constraint expression that locally determines a value set intensionally, to be resolved by application to the Terminology service. I'd rather avoid the last, because of the brittleness of intensional ref-set query syntax expressions. In any case, we need a better idea of what meta-data are needed. E.g.: * something to do with (min) version of terminology required for the reference to be valid * something to do with purpose? * other notes - a tagged list of basic types? I would like to get a better idea of the requirements. - thomas -- Thomas Beale Principal, Ars Semantica<http://www.arssemantica.com> Consultant, ABD Team, Intermountain Healthcare<https://intermountainhealthcare.org/> Management Board, Specifications Program Lead, openEHR Foundation<http://www.openehr.org> Chartered IT Professional Fellow, BCS, British Computer Society<http://www.bcs.org/category/6044> Health IT blog<http://wolandscat.net/> | Culture blog<http://wolandsothercat.net/> _______________________________________________ openEHR-clinical mailing list openehr-clini...@lists.openehr.org<mailto:openehr-clini...@lists.openehr.org> http://lists.openehr.org/mailman/listinfo/openehr-clinical_lists.openehr.org -- Ing. 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