| I've been doing some HL7 work on iOS and although I have nothing specific for WebObjects, here are some comments and resources you might find helpful.
- welcome to ACRONYM HELL If you thought programmers were bad for their own terminology, you have not seen anything. Health Informatics (HI) is absolutely awash in crazy terminology. You may want to start a personal reference doc to stick definitions and notes.
- the HL7 v3 standard is a large rambling mess (IMO) and many node definitions can conflict with others within the same document! For example, it is possible to have a node like <person> defined several times within the same document, but with different structure. Or it can have the same concept like person but create nodes named <person1> <person2> ... <person12> each can have different structures.
- HL7 v2 is NOT XML. This is important because the majority of existing systems are v2. Even the newer variations like CDA or XDS often have HL7 v2 content embedded as values. Here is an example
<rim:ExternalIdentifier id="urn:uuid:9df60c92-2d25-49dd-a1d0-595bd002e37e" lid="urn:uuid:9df60c92-2d25-49dd-a1d0-595bd002e37e" registryObject="urn:uuid:5aa6ac81-cd1f-4725-8cf5-14bb740ef2e3" identificationScheme="urn:uuid:58a6f841-87b3-4a3e-92fd-a8ffeff98427" value="100000001^^^&1.2.8.26224.2012.4.5&ISO">
<rim:Name> <rim:LocalizedString value="XDSDocumentEntry.patientId"/> </rim:Name> <rim:VersionInfo versionName="1.1"/> </rim:ExternalIdentifier>
- you will also need to understand the code systems and terminology. For example
<patient1 classCode="PAT"> <id root="2.16.840.1.112882.2.122.1.1.5" extension="5298"/>
this is the patient identifier. The root attribute identified the source and the extension identifies the value. You need to be able to distinguish between a root that represents a Drivers License, vs a Hospital vs an Insurance Carrier vs a Provincial Health Service .... or this
<relatedDocument typeCode="APND"> <parentDocument> <id extension="C7F36C19-64F0-4a8d-859B-2404F07A2434" root="2.16.840.1.113883.3.933"/> <code code="34140-4" codeSystem="2.16.840.1.113883.6.1"/>
So what is this related document? Thats easy :)
2.16.840.1.113883.6.1 = LOINC (Logical Observation Identifier Names and Code) 34140-4 = Referral
No problem .. right. Its the referral request.
My suggestion is to stay VERY tightly focused on only the messages you must support, and initially only on the PORTION of the message that you need.
Useful links
You might as well be confused by the vary source of the crazy :)
Terminology References
SNOMED-CT
Mohawk College
MARC-HI Everest Framework (Java reference framework HL7 v3)
The OpenHealth Foundation
Java IPF (Integration Platform Framework) Learn the RIM (Reference Information Model)
The RIM is the base building block for all the subsequent XML structures. It's nasty :)
HAPI (v2 HL7 only????)
Opensource HL7 parser and Library, but as far as I know it is HL7 v2 ONLY
Test Level 7
This is the only test site for HL7 v3 I have found. It is not cheap but the initial client registry search is free. Sorry, client registry may not be correct terminology, the correct name is Find candidates query and the HL7 message is PRPA_IN101103CA and the response is PRPA_IN101104CA
Enjoy David
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David Aspinall
Senior IT Consultant
Global Village Consulting Inc.
E: email@hidden
P: 1-647-927-7442
Global Village Consulting ranks 76th in 24th annual PROFIT 200 ranking of Canadas Fastest-Growing Companies by PROFIT Magazine!
On 2012-06-07, at 9:35 AM, Paul Yu wrote:
If HL7 is a markup language like HTML, XML, and others, than I would think using WO to create HL7 could just be putting the markup in the WO .html file and the generating the response as NSData and send it.
Parsing HL7 would be you would take their HL7 java library and link it in and parse the HL7 documents that you receive with it.
On Thursday, June 7, 2012 at 9:32 AM, Calven Eggert wrote:
I will be doing two things:
1) receiving HL7 messages and parsing the data 2) creating and sending HL7 messages
On 2012-06-07, at 9:30 AM, Paul Yu wrote:
What are you trying to do with HL7?
On Thursday, June 7, 2012 at 9:20 AM, Calven Eggert wrote:
Do not post admin requests to the list. They will be ignored.
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