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pCLOCD
Probing the latest on pCLOCD/LOINC and UCUM from Regenstrief, Infoway and implementers.
Members: 98
Contact: Lorie Carey
Type: Open
Access: Public
Probing the latest on pCLOCD/LOINC and UCUM from Regenstrief, Infoway and implementers.

About

What is the pCLOCD Community?

The pCLOCD Community is a great place to ask questions (like what does pCLOCD stand for?), share lessons learned in pCLOCD implementations and learn more about the growth and development of pCLOCD and LOINC in Canada.

Meetings provide an opportunity to keep up on the latest releases of the pCLOCD, LOINC and UCUM, discuss requests for new content and share support for implemetation challenges. Exchange ideas and ask questions about implementation options, units of measure challenges or documentation ontology concerns using the community forum.

The pCLOCD is the most implemented standard in Canada and is poised to be implemented in the CIHI MIS statistics in the future. Community participants have a wealth of knowledge to share. Currently, it is in use or under review in 9 or 10 provinces and 1 of 3 territories.

To become a member of this community select Join Group in the Group Menu.

If you have ideas for a community discussion or topic, working group or project that will drive interoperability forward, let us know! Send your suggestions.

CO-LEADERS

Karen Kovach, Laboratory Standards Analyst with eHealth Saskatchewan

Gennine Roberts, Clinical Informatics Specialist, MLT with eHealth Saskatchewan

KEY RESOURCES

pCLOCD Artifacts (Standard, Release Notes, Maintenance, Education, etc.)

Activity

Linda Monico created a new discussion in pCLOCD
Hello pCLOCD Community, We are planning to pilot a series of beginner education sessions for folks that are not at all familiar with standards and why they are important. The series kicks off in January and starts by introducing the audience to a patient with a medical problem. At a high level, the presentation shows the patient visiting his doctor, having some tests ordered etc and then the information flowing through the system. We plan to follow up with introductory sessions on general terminology, LOINC, SNOMED CT etc. that build upon this story. Once the full schedule is finalized, I will share the details with you all. The education is free and we certainly welcome feedback. Seema Nayani, our Pharmacist Leader at Infoway has posted about the ... in the Medication Management community. This was also advertised in the issue of ... that was released yesterday and can also be found under Events on InfoCentral. All are welcome. If you have any questions about this or the series at all, please do not hesitate to reach out to me. Thank you, Linda Monico Analyst, Clinical Systems Integration Canada Health Infoway
Lorie Carey replied to a discussion in pCLOCD
Thanks to those who are interested, I will contact you via email to provide you with the details of connecting to this discussion. If I don't have your email, please drop me a line: lcarey@infoway-inforoute.ca Lorie
Harsh Sharma replied to a discussion in pCLOCD
Hello Lorie, I am interested in participating. Thanks Harsh
Lisa Thomas replied to a discussion in pCLOCD
Hi Lorie, I would be interested in participating. Lisa
Anil Patel replied to a discussion in pCLOCD
Hi Lorie, I would like to participate. Anil
Lorie Carey created a new discussion in pCLOCD
There is a subgroup within SNOMED International that is looking into the gap between current specimen choices in SNOMED CT and those used in the lab. The subgroup has recently published this notice to the subgroup members: "The Swedish NRC together with laboratories are collecting requirements for specimen types, i.e. content in the 123038009 | Specimen (specimen) | hierarchy. So far we have collected terms used for specimen types from the two largest microbiology laboratories in Sweden and more term sets are coming in. The aim of the work is to create a (or possibly a set of) national reference set(s) for specimen types. Discussions are also being held with other lab specialties (histopathology, chemistry, ...), biobanks, and health registries. The two existing term sets have been mapped to SNOMED CT and some gaps have been identified. If other countries/members/affiliates are interested in this work and would like to collaborate in getting content into international SNOMED CT, please let me know. Future work in this are will include specimen collection procedure and analytic procedures." If anyone is interested in participating in this work, please let me know and I will connect you to the group. Regards, Lorie
Lorie Carey replied to a discussion in pCLOCD
Thanks to the folks who attended the meeting today! If you didn't make it or you need a list of the subsets impacted, the presentation can be found here. ... Be sure to contact us if you have any requests regarding the subsets presented! You have until January 31, 2018! Lorie

Events



Upcoming events:
No events

Forum

Webinar: Enabling Better Patient Care through Standardized Clinical Content (January 31, 2018 12pm ET) 12/15/17
Hello pCLOCD Community, We are planning to pilot a series of beginner education sessions for folks that are not at all familiar with standards and why they are important. The series kicks off in January and starts by introducing the audience to a...
Using SNOMED CT for Microbiology Specimens 12/14/17
Thanks to those who are interested, I will contact you via email to provide you with the details of connecting to this discussion. If I don't have your email, please drop me a line: lcarey@infoway-inforoute.ca Lorie
Using SNOMED CT for Microbiology Specimens 12/14/17
Hello Lorie, I am interested in participating. Thanks Harsh
Using SNOMED CT for Microbiology Specimens 12/14/17
Hi Lorie, I would be interested in participating. Lisa
Using SNOMED CT for Microbiology Specimens 12/14/17
Hi Lorie, I would like to participate. Anil
Using SNOMED CT for Microbiology Specimens 12/14/17
There is a subgroup within SNOMED International that is looking into the gap between current specimen choices in SNOMED CT and those used in the lab. The subgroup has recently published this notice to the subgroup members: "The Swedish NRC togethe...
Annual Subset Review and Maintenance 11/30/17
Thanks to the folks who attended the meeting today! If you didn't make it or you need a list of the subsets impacted, the presentation can be found here. ... Be sure to contact us if you have any requests regarding the subsets presented! You have...
Annual Subset Review and Maintenance 11/28/17
This is a list of the lab subsets that will be discussed at the meeting: Subset Name (Terminology) ActPriority (HL7) EntityRisk (HL7) LabResultReportingProcessStepCode (HL7) ObservationEventLabCriteriaType (LOINC) Obs...
Annual Subset Review and Maintenance 11/23/17
Plan on joining us on November 30 to gain an understanding of the subset maintenance process and contribute to the review and identification of subsets that may no longer be required for pan-Canadian use. Meeting information and a calendar invite can...
IVD Vendors are Key for Lab Data Interoperability 10/30/17
Thanks Lorie, this is very interesting. Hopefully the vendors are including the LOINC Codes in their package inserts. I am going to follow up with some of our facilities.
IVD Vendors are Key for Lab Data Interoperability 10/30/17
Hi Marion, I don't have a list, and Regenstrief does not provide one, but the founding members vendors of the ... (The IVD Industry Connectivity Consortium (IICC) is a global, nonprofit organization dedicated to creating and encouraging adoption o...
IVD Vendors are Key for Lab Data Interoperability 10/30/17
Lorie do you have a list of vendors who can provide LOINC Codes for their products? Thanks, Marion
IVD Vendors are Key for Lab Data Interoperability 10/30/17
In Vitro Diagnostic (IVD) Vendors have been working with the folks at Regenstrief in the last few years to provide LOINC codes for their products. This makes the job of mapping local tests to LOINC much easier. If you are working with an IVD Vendo...
"When it comes to data standardization, not all juice is worth the squeeze.” 10/20/17
Interesting articles with some thoughts from Daniel J. Vreeman, PT, DPT, MS, Director, LOINC and Health Data Standards at the Regenstrief Center for Biomedical Informatics: http://www.himss.org/news/interoperability-not-all-juice-worth-squeeze-0...
High Sensitivity Troponin 09/18/17
Hi Lorie, BC currently has two HAs that use LOINC 67151-1 (viewer name: Troponin T; High Sensitivity) for high sensitivity troponin testing. Thanks, Pearl

Tasks


Tasks


Time Tracking


Gantt

Documents

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Implementation ( 16 Documents )

Video

Lab Results On line

Why access electronic Lab Results?

05/26/15

Solutions

  • Canadian FHIR Registry
  • FHIR Terminology Service API
  • HAPI FHIR
  • HAPI v2
  • HL7 Explorer
  • InfoRMS
  • InfoScribe
  • Message Builder
  • Message ReMixer
  • Object Identifier (OID)
  • SNOMED CT Browser
  • Terminology Gateway
  • Terminology Service API
  • TermWorks
  • WebHook Notifications

The Canadian FHIR® Registry supports collaborative development in an effort to accelerate sustainable growth of FHIR, locally and internationally. The registry will be the home of national FHIR profiles recommended for use in Canada, including extensions, value sets, URIs and other useful, commonly used components. It is also host to a growing number of national, jurisdictional and locally shared FHIR projects, and is open to all Canadian implementers.

The Canadian FHIR Registry offers:

  • seamless integration of profile editing using Forge (free FHIR profile editor)
  • designated project space
  • supports project teams of up to 100 individuals
  • online authoring of implementation guides
  • integration with source control tools such as GitHub
  • version controlled environment

The Canadian FHIR Registry blends software development best practices with the requirements of modelling in FHIR, essential to delivering successful project requirements while having continuous access to structure validation, rendering and publishing.

This email address is being protected from spambots. You need JavaScript enabled to view it.

FHIR web services used to access terminology data

FHIR Terminology Service APIs enable automated exchange of clinical terminology content and resources. It allows developers to easily implement healthcare applications that programmatically consume codes and subsets without requiring in-depth expertize in the fine details of terminology.

terminology gateway APIFHIR Terminology Service API

 

Open source integration tools useful for health IT integration projects

HAPI FHIR® is a simple-but-powerful library for adding FHIR messaging to applications. It is pure Java compatible and licensed under the business-friendly Apache Software License, version 2.0.

HAPI FHIR

 

External Solutions for API integration

Open source integration tools useful for health IT integration projects.

HAPI v2
 

HAPI for HL7 v2 messages is an open-source, object oriented HL7 v2.x parser developed for the Java platform

HAPI FHIR
 

HAPI FHIR is a simple-but-powerful library for adding FHIR messaging to your application. It is pure Java compatible and licensed under the business-friendly Apache Software License, version 2.0.

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Open source integration tool useful for health IT integration projects

HAPI for HL7 v2 messages is an open-source, object oriented HL7 v2.x parser developed for the Java platform.

HAPI v2

Enhanced browsing of HL7 v3

Infoway HL7 Explorer is a powerful browser for HL7 v3 structures, vocabulary and references. Used in conjunction with the pan-Canadian releases, HL7 Explorer makes locating details and information more efficient.

In November 2017, the Canadian HL7 InfoCentral community determined that there was no longer any need to do further updates to the pan-Canadian Version 3 messages. As a result, the December 2012 releases of MR02.06.01 and CeRx 4.4.2 are the latest pan-Canadian publications of these standardized messages.

The HL7 Explorer, the Master Terminology Worksheet (MTW) and all other messaging related artifacts are aligned with the latest releases.

Overview
 

Learn about what HL7 Explorer can do for you with this brief online presentation.

MR 02.06
 

HL7 Explorer applied to the MR 02.06 HL7 v3 maintenance release

CeRx 4.4.2
 

HL7 Explorer applied to the CeRx 4.4.2 HL7 v3 maintenance release

 

 

Standards versions available for viewing in HL7 Explorer

Standard URL 
CA MR 02.06 https://infocentral.infoway-inforoute.ca/extra/ca/mr0206-html/html/search.html
CA MR 02.05.01 https://infocentral.infoway-inforoute.ca/extra/ca/mr020501-html/html/start.html
CA MR 02.05 https://infocentral.infoway-inforoute.ca/extra/ca/mr0205-html/html/start.html
CA MR 02.04.03 https://infocentral.infoway-inforoute.ca/extra/ca/mr020403-html/html/start.html
CA CeRx 4.4.2 https://infocentral.infoway-inforoute.ca/extra/ca/cerx442-html/html/search.html
CA CeRx 4.4.1 https://infocentral.infoway-inforoute.ca/extra/ca/cerx441-html/html/start.html 
CA CeRx 4.4 https://infocentral.infoway-inforoute.ca/extra/ca/cerx44-html/html/start.html
BC V02R04 https://infocentral.infoway-inforoute.ca/extra/bc/v02r04-html/html/start.html
NS CeRx 4.3 https://infocentral.infoway-inforoute.ca/extra/ns/cerx43-html/html/start.html
NS R02.04.03 https://infocentral.infoway-inforoute.ca/extra/ns/r020403-html/html/start.html
AB MR2007 https://infocentral.infoway-inforoute.ca/extra/ab/mr2007-html/html/start.html
AB R02.04.03 https://infocentral.infoway-inforoute.ca/extra/ab/r020403-html/html/start.html
AB R02.04.00 SHR https://infocentral.infoway-inforoute.ca/extra/ab/r020400-shr-html/html/start.html
AB R02.04.03 Imm https://infocentral.infoway-inforoute.ca/extra/ab/r020403-imm-html/html/start.html

Request Management Solution

InfoRMS (Infoway Request Management System) is Infoway's Request for Change Tool for SNOMED CT, pCLOCD/LOINC and pan-Canadian Subsets. Not sure if you have access to InfoRMS? Manage your InfoRMS Access in your user profile.
SNOMED CT
 

Submit or follow requests to SNOMED CT

pCLOCD/LOINC
 

Submit or follow requests to pCLOCD/LOINC

pan-Canadian Subsets
 

Submit or follow requests to pan-Canadian Subsets

 

infoscribeSupporting the Standards Selection Framework, InfoScribe enables teams to collaboratively create, discuss, and publish digital health solutions from clinical requirements to specifications. Featuring templates, versioning, PDF export, inline commenting and HL7 Explorer integration, InfoScribe improves productivity and accelerates the development of healthcare solutions.

Standards Selection Framework

The Standards Selection Framework provides users with the means to plan, choose and document interoperability solutions from concept through to implementation. Starting from the Clinical Requirements identified by clinicians through to business requirements, standards and technical specifications, the framework provides a comprehensive guide through the development of interoperability solutions.

The framework also provides an opportunity for the InfoCentral community to share successful implementation projects, the standards selections made at a point in time of the project and the specifications that result from the selections made. Publishing solutions in this space will help to establish a Canadian repository of references.

clinical requirements

Clinical Requirements describe the information and workflow needs of the clinician for a specific clinical context and clinical data exchange. Using the Clinical Interoperability Principles as a guide, a set of requirements expressed in the clinician’s voice will provide the foundation for a well-designed interoperability solution.

business requirements

Business Requirements are derived from clinical requirements and provide a full picture of the solution that needs to be developed. Use cases, business rules and guidance are used to fully outline the solution design.

standards selection

Standards Selection refers to the process that has been developed to help guide teams through the selection of terminology and messaging standards. Using the line of inquiry and considerations in the forms provided implementation teams may assess the standards available and determine the best option for the point in time. The process also provides an opportunity for the InfoCentral community to share successful implementation projects, promoting standardization through reuse.

standards

Standards are an integral piece of the interoperability solution, covering both the terminology that defines the data sent, and the messaging structures that define how the data is transferred. The framework provides the access and consideration criteria to the international and Canadian standards to facilitate implementation.

specifications

Specifications provide the details for the solution to be implemented. These details include: a review of the data elements used, samples of transferred messages, the system architecture as well as the security specifications including authorization and authentication.

Solution for API integration

Infoway Message Builder allows developers to focus on the business challenges of integrating their solutions with each electronic health record implementation by abstracting the differences between different versions of pan-Canadian HL7 messaging and supporting current implementation constraints. Developers can build interfaces in a familiar development environment, using the programming language of their choice*, while the Message Builder API fosters quick and easy creation, population and access to HL7v3 requests and responses.

Infoway Message Builder v2.0 and later is enhanced to generate JAVA APIs to create, validate, marshal/unmarshal CDA documents.

 Implementation and Exchange

 

Key features and benefits

Message Builder offers a number of key features and benefits:

  1. Abstracts the complexity of HL7v3 messages and greatly simplifies the work of the developer when implementing them;
  2. Reduces the impact on developers from implementation variations;
  3. Enables companies to achieve Infoway product certification with greater confidence and reduced time;
  4. Enables developers to incorporate future message versions without re-writing their products;
  5. Can be embedded in software applications due to its open source distribution under a commercial-friendly Apache 2.0 license.

Out of the box support

Infoway Message Builder comes with built-in runtime APIs that support a number of pan-Canadian specifications:

  • MR2009 (R02.04.02)
  • MR2007 (V02R02)
  • MR 2007 (V02R01)
  • CeRx (V01R04.3)

In addition, while developers can easily build custom transport mechanisms without affecting the core, Message Builder includes native support for SOAP and RESTful message transports. Developers can configure and extend the transport as desired.

Detailed product features

  • Provides the capability to configure and populate message values that are common to all messages—this allows developers to reuse common message data, shortening the time to configure and create an interoperable system.
  • Uses simplified data types that are natural and familiar to the programming language (e.g. String for ST) rather than directly exposing the sometimes complicated HL7v3 data types—yet still allowing access to HL7v3 data types when necessary.
  • Allows developers to focus on the business-aspect of a request/response, avoiding many of the complexities of HL7v3.
  • Code-generation algorithms merge identical and similar classes together to simplify the generated API—meaning less confusion in the resulting code and an increased ability to write generic handlers for certain types.
  • Converts populated objects into HL7v3 XML requests, and converts HL7v3 responses into populated objects.
  • Provides flexibility in configuring and performing terminology-code lookups, including code set and database-backed lookups (can mix and match).
  • Associations and attributes are strongly typed, given business names when provided, and contain code docs directly from the MIFs (see wiki.hl7.org/index.php?title=MIF).
  • The algorithms inline most classes that only have a small number of properties, further simplifying the API.
  • Offers both permissive and strict modes—permissive allows many common errors and generates appropriate error comments in the XML or result object.
  • A separate validation tool is provided to test ad-hoc messages—this tool reuses the same validation components that are executed during message marshaling and unmarshalling, ensuring consistent processing of the message whether during processing or during conformance validation.

Forward looking

The power of the Message Builder architecture is in its MIF-based generation of the specification API. With Message Builder, any MIF is supported—whether a future release of the pan-Canadian specifications or a modified (constrained) jurisdiction-specific release of an existing specification. 

 

How it works

Message Builder comprises two parts:

  1. Message Builder Generator—a tool used by Infoway to take input MIFs and create Message Sets for use by Message Builder Runtime;
  2. Message Builder Runtime—an API used by developers to allow their products to support multiple Message Sets without recoding.

Message Builder Generator

Used by Infoway, Message Builder Generator takes MIFs (as the source of truth for standards specifications) and converts them into a series of Java Classes. This is done by first converting the MIFs to an XML Message Set (a simplified representation of the information present in the original MIFs), then generating Java Classes that reference standard Java data types and use business-friendly names. In the process, groups of related elements are flattened and similar message parts are placed into a single class: these steps increase ease of use and reduce the complexity of the resulting Java Classes.

MBG process

Using Message Builder Generator, Infoway is able to create multiple Message Sets, each representing the MIFs used in a single jurisdiction, but all for the same HL7v3 version.

Message Builder Runtime

Message Builder Runtime allows developers to quickly adapt to implementations in multiple Jurisdictions: incoming messages are first examined to determine the corresponding source Message Set, once identified, a series of Java Objects that represent the message are instantiated. Next, the Java Objects are turned into an HL7 message for the HL7 version corresponding to the desired destination Message Set. 

MB process

Using Message Builder Runtime developers can accept messages over the wire and on-the-fly turn them into a different HL7 message version. Given the capability of Message Builder to support future versions of HL7 messages, developers can easily future proof their products with minimal effort.

 

*Developer friendly

The Message Builder libraries are available for Java and Microsoft .NET. In addition, a simplified XML message format is available with REST-based services for managing mapping to/from the simplified form to the target specification XML format.

 

CDA Support

Message Builder CDA API supports the following CDA and data type specifications:

Message Builder provides  JAVA and .NET APIs for CDA document creation, validation, marshalling/unmarshalling of the following CDA document types:

  • Continuity of Care Document (CCD) (Release 1.1)
  • Consultation Notes (Release 1.1)
  • Discharge Summary (Release 1.1)
  • Imaging Integration, and DICOM Diagnostic Imaging Reports (DIR) (Release 1)
  • History and Physical (H&P) (Release 1.1)
  • Operative Note (Release 1.1)
  • Progress Note (Release 1.1)
  • Procedure Note (Release 1)
  • Unstructured Documents (Release 1.1)
  • CDA documents using pan Canadian CDA header template

Clinical applications in JAVA or .NET can use the Message Builder CDA APIs to create, validate or parse above listed types of CDA documents. Potential use cases are document source or document consumer actors in IHE XDS profile, content creator/content consumer in any content module/profile, or report creator/viewer in RIS/PACS/EMR systems.

Message Builder is available for Java and .NET

Message Builder for Java

System Requirements

  • Java 1.5 or higher
  • Maven 3.0.3 or higher (can be removed after installing Message Builder if working with a non-Maven project)

Download

Message Builder is licensed under Apache License, Version 2.0. To use Message Builder, you will need

  1. Message Builder Core and
  2. one or more Message Builder API release(s)—depending on your implementation requirements.

Select a Message Builder Version:

 

Select one or more Message Builder API releases:

 

Optional Message Builder components:

Terminology Database Resolver
Message Builder Example

Message Builder pom.xml file:

 

Message Builder for .NET

System Requirements

  • .Net Framework 3.5 or higher

Download

Message Builder v2.1 for .NET

Message Builder is licensed under Apache License, Version 2.0. To use Message Builder:

  1. Download Message Builder .NET Core 2.1.0 setup
  2. Unzip and pull out the dll files that you need:
     \ → root location of required Message Builder core assemblies (Mandatory - required all)
     \releases\ → location of Message Builder release assemblies (Mandatory - choose one or more)
  3. Copy them to your .NET project 
  4. Download Message Builder .NET 3rd-Party libraries, unzip it, and copy the files to your .NET project

Message Builder v1.5.8.1 for .NET

Message Builder is licensed under Apache License, Version 2.0. To use Message Builder:

  1. Download Message Builder .NET Core 1.5.8.1 setup
  2. Unzip and pull out the dll files that you need:
     \ → root location of required Message Builder core assemblies (Mandatory - required all)
     \releases\ → location of Message Builder release assemblies (Mandatory - choose one or more)
  3. Copy them to your .NET project 
  4. Download Message Builder .NET 3rd-Party libraries, unzip it, and copy the files to your .NET project

Message Builder v1.4.6 for .NET

Message Builder is licensed under Apache License, Version 2.0. To use Message Builder, you will need

  1. Download Message Builder .NET Core 1.4.6 setup
  2. Unzip and run SetupCore.msi file
  3. Choose a installation location <install dir>.  The setup execution should place the following directories in <install dir>:
     \lib\ → location of required Message Builder core assemblies (Mandatory - required all)
      \releases\ → location of Message Builder release assemblies (Mandatory - choose one or more)
     \src\ → location of all source code and project files required to load them into visual studios
     \debug\ → location of debug symbol files
  4. Pull out files the dll files from the \lib\ and \releases\ folders, and copy them to your .NET project 
  5. Download Message Builder .NET 3rd-Party libraries, unzip it, and copy the files to your .NET project

Localization of pan-Canadian Standards

Infoway Message ReMixer is a web-based application that allows for the localization of pan-Canadian Standards (pCS) messages to meet jurisdictional requirements, all while maintaining the integrity of the original, standard message.

msg remixerAccess Message ReMixer Now

 Implementation and Exchange

Jurisdictional ReMixes

Pan-Canadian Standards use Object Identifiers (OIDs) to distinguish between objects by assigning a numeric string that enables other systems to understand the unique information that is being shared between various systems.

Canada Health Infoway has an arrangement in place with HL7 International that allows Infoway to submit OIDs to HL7 International on behalf of Canadian Implementers free of charge. There is a $100 USD fee ($250 USD effective January 2018) per OID request if done directly with HL7 International.

To submit an OID, download the registration form that corresponds to your OID request. Email the completed form to This email address is being protected from spambots. You need JavaScript enabled to view it.

Browse International and Canadian Content

SNOMED International's SNOMED CT browser allows users to browse and search the SNOMED CT International Edition to explore concepts and relationships. It also provides access to browse national extensions from SNOMED International member countries including the Canadian Edition of SNOMED CT in English and French.

snomed browser Browse SNOMED CT Now

 General Documentation

Browse, download and leverage the terminology used in Canada

Terminology Gateway is a web based solution framework that enables the distribution and sharing of terminology concepts, subsets and concept maps, making them available for web browsing, download or real time query.

terminology gatewayBrowse Terminology Gateway Now

RESTful web services used to browse terminology data

Terminology Service RESTful APIs enable automated exchange of clinical terminology content and resources. It allows developers to easily implement healthcare applications that programmatically consume codes and subsets without requiring in-depth expertise in the details of terminology.

terminology gateway APITerminology Service API

 

Apelon’s TermWorks is an easy-to-use data mapping solution which is provided by request for free to individuals who have Standards Access. It brings powerful terminology capabilities directly to the desktop. TermWorks combines Microsoft® Excel® spreadsheet software with web services-based terminology processing to give organizations comprehensive mapping capability to SNOMED CT and the Canadian Edition of SNOMED CT.

 Education

  • Introduction to SNOMED CT (English)
  • Introduction to SNOMED CT (French)
  • This email address is being protected from spambots. You need JavaScript enabled to view it.

Automated notifications of new content in Terminology Gateway

A WebHook is an HTTP callback. When new content is published in the Terminology Gateway, a publishing event will be POSTed to each registered WebHook, notifying their respective owners about the publication.

WebHook registration

Individual users can register for WebHook notifications by sending an email to: This email address is being protected from spambots. You need JavaScript enabled to view it. and specifying the WebHook endpoint. Upon registration, a unique api_id will be assigned to the WebHook. Each notification POSTed by the Terminology Gateway will contain the api_id, allowing the endpoint to verify that the notification was indeed issued by the Terminology Gateway. The api_id must be echoed back by the WebHook endpoint in the body of the notification response.

WebHook interface

The WebHook endpoint must serve HTTP requests conforming to the following interface:

HTTP Request

{
  "api_id": "cb570e5a2748f349f9119431db836b3a23fdb6571afee34c0432d87220f2431b",
  "base_url": "https://termapi.infoway-inforoute.ca/rest/v1/",
  "notification_time": "2017110711:07:00",
  "targets": [
    {
      "id": "2.16.840.1.113883.2.20.6.1",
      "name": "Canadian Clinical Drug Data Set (CCDD)",
      "type": "package",
      "version": "20171016",
      "effective_date": "20171016",
      "publication_time": "2017103015:20:23",
      "message": "Monthly CCDD update for October 2017"
    },
    {
      "id": "2.16.840.1.113883.2.20.3.443",
      "name": "PrescribeIT",
      "type": "package",
      "version": "LPR2",
      "effective_date": "20171103",
      "publication_time": "2017110309:37:22",
      "message": "PrescriptionMedicinalCode version reflecting the October 2017 CCDD update"
    }
  ]
}
				
  • api_id: as previously mentioned, each notification POST contains the api_id granted at registration.
  • base_url: the base URL for the native REST API endpoint of the originating system. This can be used to call back the Terminology Gateway via APIs in order to programmatically download updated content.
  • notification_time: the timestamp of the WebHook notification in yyyyMMddHH:mm:ss format.
  • targets: list of updated targets. Each entry in this array corresponds to a Terminology Gateway artifact (subset, codesystem, map, package) that was updated and is therefore subject to the notification. The target list will only include artifacts for which the user has registered to receive notifications. Users can register to receive notifications about content updates using the Terminology Gateway User Interface or by invoking the native REST APIs.

    Each of the notification targets contains the following fields:
    • id: the artifact id, typically an OID
    • name: the artifact name
    • type: the artifact type: subset, codesystem, package or map
    • version: the published version id
    • effective_date: the effective date associated to the artifact version, in yyyyMMdd format
    • publication_time: the publication time in yyyyMMddHH:mm:ss format
    • message: optional message describing the published artifact version

HTTP Response

HTTP Response code: 200 for success, any other response code will be interpreted as an error
Sample HTTP Response Body:

{
  "api_id": "cb570e5a2748f349f9119431db836b3a23fdb6571afee34c0432d87220f2431b",
  "result": "success",
  "message": "Successful processing of the WebHook notification"
}
  • api_id: as previously mentioned, each notification response must echo back the api_id granted at registration.
  • result: success if the web hook notification was successful, any other value will be interpreted as an error.
  • message: optional response message.


Error handling

When receiving an error as a result of a WebHook notification, the Terminology Gateway will retry the notification four times at 15 minutes intervals. If still unsuccessful after four notification attempts, the system will drop the notification and will notify the user by email that the WebHook couldn't be invoked.

Sample code

Demo code for a sample WebHook endpoint can be found here: 

https://github.com/CanadaHealthInfoway/tgateway-webhook

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