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 $250 USD fee 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 Cette adresse courriel est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

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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: Cette adresse courriel est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. 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 Request

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

Apelon’s TermWorks is an easy-to-use data mapping solution that is provided by request (free of charge) 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.

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.

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Supporting 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.

Des exigences cliniques aux spécifications

Le Cadre de sélection des normes permet à ses utilisateurs de planifier, de choisir et de documenter des solutions d’interopérabilité depuis l’étape du concept jusqu’à celle de l’implantation. À partir des exigences cliniques établies par les cliniciens jusqu’aux exigences administratives, en passant par les normes et les spécifications techniques, le Cadre se veut un guide complet sur toutes les étapes de la création de solutions d’interopérabilité.

Le Cadre donne aussi à la communauté d’InfoCentral une occasion d’échanger sur les projets d’implantation fructueux, le choix des normes effectué à un moment précis d’un projet et les spécifications qui en ont résulté. La publication des solutions à cet endroit permettra la mise sur pied d’un répertoire de référence canadien.

Exigences Cliniques décrivent les besoins en information et en déroulement du travail du clinicien pour une situation clinique particulière et pour l’échange de données cliniques. À partir des principes de l’interopérabilité clinique, on utilise un ensemble d’exigences exprimées par les cliniciens pour mettre sur pied une solution d’interopérabilité bien conçue.

Exigences Administratives sont établies d’après les exigences cliniques et procurent une image complète de la solution à mettre au point. Des cas d’utilisation, des règles administratives et des conseils sont aussi donnés en référence pour permettre une modélisation complète de la solution.

Sélection des Normes désigne le processus établi pour guider les équipes dans les diverses étapes de la sélection de la terminologie et des normes de messagerie. À l’aide du sujet de la requête et des diverses considérations contenues dans les formulaires fournis, les équipes d’implantation peuvent évaluer les normes accessibles et déterminer le meilleur choix ponctuel. Le processus permet aussi à la communauté d’InfoCentral d’échanger sur les projets d’implantation fructueux, ce qui favorise la normalisation par la réutilisation.

Normes afont partie intégrante de la solution d’interopérabilité; elles touchent tant la terminologie, qui définit les données envoyées, que les structures de messagerie, qui définissent comment ces données sont envoyées. Le cadre fournit les critères d’accès aux normes internationales et canadiennes, ainsi que les critères d’examen en vue de faciliter l’implantation.

Spécifications procurent les détails de la solution à implanter. Ces détails comprennent : un examen des éléments de données utilisés, des échantillons des messages transférés, l’architecture du système et les spécifications de sécurité, dont l’autorisation et l’authentification.

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.

Browse Terminology Gateway Now

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.

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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.

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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 Service API

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.

Browse SNOMED CT Now

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.

FHIR Terminology Service API

Standards versions available for viewing in HL7 Explorer

Solution for API integration

Infoway Message Builder allows developers to focus on their business problem by providing APIs that foster quick and easy creation, population and access to HL7v3 requests and responses and CDA documents.

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