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PHIN VADS Webinar Series - #2 PHIN VADS Application Integration & Web Services Overview Dec 2nd, 2010.

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Presentation on theme: "PHIN VADS Webinar Series - #2 PHIN VADS Application Integration & Web Services Overview Dec 2nd, 2010."— Presentation transcript:

1 PHIN VADS Webinar Series - #2 PHIN VADS Application Integration & Web Services Overview Dec 2nd, 2010

2 (1)Overview of PHIN VADS application (2)PHIN VADS Framework (3)PHIN VADS Web services (HL7 CTS, IHE ESVS)HL7 CTSESVS (4)PHIN VADS integration with other public health applications (5)IHE Connectathon 2011 & HIMSS Interoperability show case -PHIN VADS registered as value set repository to support IHE public health profiles (6) Q & A Agenda PHIN VADS2010 Webinar Series2

3 Vocabulary Definitions & Examples

4 Vocabulary View (Messaging Guides) PHIN VADS2010 Webinar Series4 “Vocabulary View” refers to a collection of value sets associated with a HL7 messaging guide or CDA. View is also versioned and can be downloaded as a zip file. View can also be accessed using web services.

5 Vocabulary View Metadata PHIN VADS2010 Webinar Series5

6 HL7 Common Terminology Services PHIN VADS2010 Webinar Series6 HL7 CTS Wiki Web pageWeb page

7 HL7 CTS Benefits PHIN VADS2010 Webinar Series7

8 HL7 CTS Implementations PHIN VADS2010 Webinar Series8

9 IHE Enhanced Sharing Value Set (SVS) PHIN VADS2010 Webinar Series9 IHE ESVS Specification download link (August 2010)

10 IHE ESVS – Value Set retrieval PHIN VADS2010 Webinar Series10

11 In 2004, CDC developed a web-based enterprise vocabulary system called the Public Health Information Network Vocabulary Access and Distribution System (PHIN VADS) for accessing, searching, and distributing HL7 messaging value sets used within the PHIN and NHIN.PHIN VADS Provides all the vocabulary metadata needed for HL7 messaging. Promotes sharing and reusing of the value sets. Hosts multiple versions of value sets that allow implementers to have access to the current, past and the future versions of value sets and value set collections Provides web services (API) that allows HL7 interface engines, medical and public health applications to obtain the value sets as well as validate the vocabulary present in HL7 messages. Provides detailed code system metadata for value set concepts such as context, hierarchy, synonyms and alternate codes. This will facilitate the implementation of value sets and improve the quality of local vocabulary mapping to standards. PHIN VADS can be accessed at a public web site - http://phinvads.cdc.govhttp://phinvads.cdc.gov CDC Vocabulary and Messaging team manages the PHIN VADS. What is PHIN VADS? PHIN VADS2010 Webinar Series11

12 Currently, PHIN VADS has 592 value sets supporting 60 HL7 and CDA message implementation guides. The PHIN VADS hosts both the intrinsic and extrinsic value sets. PHIN VADS also hosts 149 SDO code systems that are used by HL7 messaging value sets. Many of the code systems (~ 120) belong to HL7 v2.x or V3. PHIN VADS updates the value sets often based upon SDO code system updates. PHIN VADS Hyperlinks for Meaningful Use (MU) Stage 1 Vocabulary: a)MU Stage 1- Immunization HL7 2.5.1 IG VocabularyImmunization HL7 2.5.1 IG Vocabulary b)MU Stage 1- ELR HL7 2.5.1 IG VocabularyELR HL7 2.5.1 IG Vocabulary c)MU Stage 1 – Value sets related to Syndromic SurveillanceValue sets related to Syndromic Surveillance PHIN VADS Content PHIN VADS2010 Webinar Series12

13 PHIN VADS can be accessed using one of the following methods : 1)PHIN VADS Web Browser - http://phinvads.cdc.govhttp://phinvads.cdc.gov 2)PHIN VADS Web Service – System to System exchange of vocabulary data. 3)PHIN VADS Lite – Local instance of VADS web services and database PHIN VADS Content Access PHIN VADS2010 Webinar Series13

14 PHIN VADS Framework PHIN VADS2010 Webinar Series14

15 Web Browser VADS Web Application VADS Web Services The PHIN VADS web application is built upon the PHIN VADS web services. When using the PHIN VADS application, the web services are used indirectly. These web services are public and built upon open standards (HL7 CTS2, IHE SVS). PHIN VADS Web Services: System-to- System Exchange of vocabulary data

16 PHIN VADS Web Services VADS Web Services Custom Program Custom programs, applications, or data extraction scripts can be written to directly use PHIN VADS Web Services. The PHIN VADS technical team is available to assist you. Sample code and a detailed API are available in the PHIN VADS Developer’s Toolkit - http://phinvads.cdc.gov/vads/developersGuide.actionhttp://phinvads.cdc.gov/vads/developersGuide.action

17 Allows any individual or organization to implement a local instance of the VADS service and database. The VADS Lite deployment is available for Oracle and Microsoft SQL Server. VADS Lite is not deployed with a User Interface The deployment model requires the users to download, install, and maintain a local installation on their hardware. Vocabulary Server with Application Programming Interface (API) may allow the vendors or implementers to integrate the vocabulary server with their application. – E.g. NEDSS Messaging Subscription Service application includes PHIN VADS vocabulary server and Orion Rhapsody that will help validate HL7 messages and assist mapping between local and standard terminology.NEDSS Messaging Subscription Service application PHIN VADS Lite PHIN VADS2010 Webinar Series17

18 PHIN VADS custom downloader can be used like a shopping cart for downloading the VADS content. Useful tool especially for generating custom reports and queries from PHIN VADS database. Can be easily executed by non-technical people (Epidemiologist, Clinicians, Quality Measure Developers, Value set creators, etc..) Allows to download several value sets into a single file. This helps the implementers to import value set collections into a database (E.g. EpiInfo, State Public Health Surveillance Applications, LIS) Uses VADS web services to query the VADS database. Value set and quality developers can use this tool to develop the intrinsic value sets using the hierarchical relationships from SDO vocabulary such as SNOMED. Custom Downloader Example PHIN VADS2010 Webinar Series18

19 CDC Interoperability Tools (Case Notification) PHIN VADS2010 Webinar Series19

20 PHIN Message Subscription Service (VADS Lite  Web Services)Message Subscription Service PHIN Message Quality Framework (MQF), CDS (Web Services)MQF NEDSS Based System - NBS (Web Services)NBS EpiInfo (Custom downloader  Web services ) EpiInfo National Healthcare Safety Network – NHSN (VADS Lite  Web services)NHSN Environmental Public Health Track Network – EPHTN (Web services)EPHTN IHE Connectathon - EMR Vendors (Web services – IHE ESVS) IHE Connectathon Quality Measure Developers authoring value sets (Custom Downloader) PHIN VADS interaction with other vocabulary & Messaging tools (Web services) – Work in progress – LexGrid, IHTSDO SNOMED Workbench, Messaging Workbench, UMLS UTS, Virginia Tech SNOMED Browser, USHIK, USGS, EPA SRS, RELMA, HL7 interface Engines, etc.. – RELMA – Bookmarking feature of VADS to link VADS value sets to LOINC questions (data elements) and also used in HL7 Msg IG. PHIN VADS Application Integration PHIN VADS2010 Webinar Series20

21 IHE Connectathon PHIN VADS2010 Webinar Series21

22 PHIN VADS participating as value set repository supporting the following IHE public health profiles: 1)Physician Reporting to a Public Health Repository – Cancer Registry (PRPH) 2)Maternal & Child Health - CDC NCHS Vital records: Birth Certificate & Fetal Death Report 3)Early Hearing Detection & Intervention (EHDI) IHE Connectathon Event – Public Health profiles PHIN VADS2010 Webinar Series22

23 Value set consumer downloading all the value sets associated with each IHE profile (e.g. Download views - MCH, Cancer, EHDI) Value set consumer sending a value set identifier (OID) to retrieve the value set concepts (e.g. To populate the drop down in a form or to see if the concept is found in EMR repository – data mining such as MCH) Value set consumer sending a concept code and code system OID to value set repository (VADS) in order to find out if the concept is part of the value set (e.g. Trigger for cancer reporting) Value set consumer (State Cancer Registry) validates the codes being sent in the report by making a quick web service call to PHIN VADS. If it was an invalid code or not part of the value set, it would give a warning or error message. Value Set Consumer interaction with PHIN VADS (IHE Connectathon) PHIN VADS2010 Webinar Series23

24 PHIN VADS Support - phConnect PHIN VADS2010 Webinar Series24 PHIN VADS online forum URL: http://www.phconnect.org/group/phinvads http://www.phconnect.org/group/phinvads E-mail: phinvs@cdc.gov

25 Demonstration - PHIN VADS Developers Guide

26 Questions

27 Value Set Authoring Tool Webinar PHIN VADS2010 Webinar Series27 Webinar Invitation link

28  Sundak Ganesan – Lead Vocabulary Specialist  Sheila Abner – Vocabulary Specialist  Steve Eady – Tech Lead  Prosenjit Dutta – Developer  Scott Keller – Database Analyst  Cathy Lester – Quality Assurance/Tester  Vanessa Fernandez – Business Analyst  Michael Pray – Project Manager  Mark Winarsky & Gautam Kesarinath – CDC FTE Program Managers  Nikolay Lipskiy – CDC FTE lead for SDO standards Acknowledgments PHIN VADS2010 Webinar Series28

29 Appendix PHIN VADS2010 Webinar Series29

30 NLM Unified Medical Language System (UMLS)UMLS – SDO vocabulary (RxNorm, SNOMED), mapping between standards, subsets, etc.. Centers for Disease Control & Prevention (PHIN VADS)PHIN VADS – Public health & clinical care value sets, HL7 Messaging IG value sets distribution, web services,.. National Cancer Institute (NCI) – Enterprise Vocabulary Services (EVS)EVS – Cancer domain, NCI Metathesaurus, FDA vocabulary (SPL, UNII), Gene (HUGO, GO), etc.. Environment Protection Agency (EPA) – Substance Registry System (SRS)SRS – Substance (Chemical, Physical, Biological), Map to CAS #, vocabulary (Air, Water, Soil), etc… Agency for Healthcare Research & Quality – United States Health Information Knowledgebase (USHIK)USHIK – Metadata registry of healthcare data elements and information models of SDOs, HITSP, … Mayo Clinic - LexGrid, LexBig, LexWikiLexGridLexBigLexWiki – Distributed network of terminologies and ontologies using std. tools, web services (HL7 CTS), … Washington Publishing Company (WPC) – Taxonomy browser & file serverTaxonomy browser file server – Code lists supporting administrative data – X12, NUCC, HIPAA, etc… Commercial Terminology Distribution (Vendors) Vocabulary Distribution Portals PHIN VADS2010 Webinar Series30

31 PHIN VADS Information Model PHIN VADS2010 Webinar Series31

32 Value Set Maintenance (Versioning) PHIN VADS2010 Webinar Series32 Change Event Model:  PHIN VADS maintains the past, current and future versions of a value set.  Used for capturing the complicated versioning process.  Allows for locking of vocabulary objects during vocabulary authoring.  Provides a historical record of all changes made to an object over time.  Each change is stored as a delta from prior version to proposed version.  Supports collaborative authoring managed through governance.

33 Allows locking of a subset of the data model to be edited. Change Control Model provides a mechanism for governance of edits to VADS data. Organizes edits to subsets of the data structure, such as Code System, Value Set, Vocabulary Views, etc. Edits to VADS are checked against business rules, then applied as a group to the actual tables Completed edits are moved via XML as a Change Control Package to the Review and Production environments. Each change control package contains the original vocabulary item as well as its changes. This can be used for reports later. The Change Control Package provides an audit trail. PHIN VADS Change Control Model PHIN VADS2010 Webinar Series33

34 Change Control Model PHIN VADS2010 Webinar Series34

35 Please contact PHIN VADS team at phinvs@cdc.gov for PHIN VADS data dictionary.phinvs@cdc.gov PHIN VADS Data Dictionary PHIN VADS2010 Webinar Series35

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