PHINVocabulary Access and Distribution System VADS

1
PHIN Vocabulary Access and Distribution System
(VADS)

• CDC, National Center for Public Health
  Informatics, Division of Informatics Shared
  ServicesThursday, January 18, 2007 230 pm to
  400 pm (ET)
• Presenters
• Mamie Jennings Mabery, MLn
• Sundak Ganesan, MD

2
Webinar Overview

• Welcome and Introductions
• About PHIN VADS
• What is PHIN VADS?
• Why Standard Vocabulary?
• How PHIN VADS Can Benefit You?
• Continued Development and Future Direction
• Polling on Future Webinars
• PHIN VADS Content and Functionality
• Vocabulary Basics
• What is available in PHIN VADS?
• PHIN VADS Demo
• Questions

3
What is PHIN VADS?
The Vocabulary Access and Distribution System
(VADS) for the Public Health Information Network
(PHIN)

• A Web-based Enterprise Vocabulary System for
  accessing, searching, and distributing
  vocabularies used within the PHIN

• Used by CDC Programs and Partners for activities
  such as
• - Populating HL7 Messages
• - Downloading standard vocabularies for use
  in applications
• - Developing Question and Answer sets for
  surveillance surveys
• - Mapping legacy (local) concepts to
  standard codes

• Promotes the use of standards-based vocabulary
  within PHIN systems to support the exchange of
  consistent information among Public Health
  Partners (PHIN Goal)

4
What is PHIN VADS? (contd)

• Developed and maintained by the PHIN Vocabulary
  and Messaging Team within the Division of
  Informatics Shared Services/National Center for
  Public Health Informatics (NCPHI)
• Current version is 2.1, Released September 2006
• PHIN VADS Home http//www.cdc.gov/PhinVSBrowser/S
  trutsController.do

5
Why Standard Vocabulary?

• Common language for better human understanding of
  data exchanged
• Machine-readable codes for interoperability among
  systems
• Science-based organizations with terminology
  experts have developed and identified
  vocabularies for the Public Health arena
• Health Level 7 (HL7)
• Consolidated Health Informatics Initiative (CHI)
• Health Information Technology Standards Panel
  (HITSP)
• American Health Information Community (AHIC)
  BioSurveillance Focus
• Available mappings between concepts within
  standard code systems

PHIN VADS makes these standard vocabularies
available to CDC and its Public Health Partners
all in one place!
Standard Development Organizations (SDOs)
6
How VADS Can Benefit You?

• Time and energy savings experts already have
  developed and specified the standard vocabularies
  for you

• Cost savings you dont have to pay for needed
  vocabulary, but can download code sets for free
  from PHIN VADS

• Data sharing for more efficient analysis within
  your state or local jurisdiction as well as
  between states and jurisdictions

• Efficient and effective Data Retrieval from
  externals (laboratories, hospitals)

• Code lookup you can identify the appropriate
  standard code from ICD-9 CM or SNOMED, for example

• Access and view vocabularies within the context
  of Public Health (Domains)

• Identify Vocabulary Metadata needed for HL7
  Messaging (CE data type, OID)

• Use Vocabulary Maps and Mapping tools (Biosense
  RT)

• Meet PHIN Certification requirements

7
Continued Development
There are gaps within the PHIN VADS content, and
we are diligently working to fill these by

• Submitting needed concepts to standard
  vocabularies, such as SNOMED
• Developing and identifying additional
  vocabularies necessary to cover the public health
  arena through
• Work with CDC Programs (TB, Lead, Varicella) to
  identify needed code sets (value sets)
• Participation in SDO Vocabulary Working Groups,
  such as HL7
• Involvement with e-Gov Health IT initiatives such
  as HITSP
• Listening to YOU

If you have developed a code set for an area not
already covered in PHIN VADS and are willing to
maintain that set, we are interested in
publishing that content in VADS. Please contact
Dr. Sundak Ganesan.
8
Future Direction

• VADS Content
• Currently, there are 170 value sets
• In future releases this year
• 300 new Value Sets will be added to include
  Laboratory and Case Notification (February)
• Drug Vocabulary will be expanded (late Spring)

• VADS Functionality (Late Spring)
• All synonyms and the ability to search on them
• Hierarchical presentation of data (broader and
  narrower concepts easily apparent) and the
  ability to navigate up and down the trees
• Relationships among concepts will be viewable
  (disease to organism) and users will be able to
  navigate within these concept clusters
• Web services functionality with ability to make
  API calls into the VADS repository

9
Scope of Webinar

• This Webinar will provide an overview of the VADS
  content with a demonstration of how to access,
  search and download vocabulary data
• This Webinar will not answer technical questions
  nor specific questions on individual vocabulary
  content
• For follow up questions regarding content and
  functionality, please email the presenters or
  PHINVS_at_cdc.gov
• For questions regarding PHIN VADS access, please
  email the PHIN Helpdesk PHINTech_at_cdc.gov
• Presenter contact information
• Mamie Jennings Mabery, zvt9_at_cdc.gov
• Sundak Ganesan, dsq3_at_cdc.gov

10
Invitation to the VCoP

• The CDC Vocabulary Community of Practice seeks to
  share about current vocabulary projects,
  collaborate where possible, educate community
  members, and encourage vocabulary best practices.
• Please join our next monthly meeting
• Thurs, January 25, 2007 noon-130 PM Eastern Time
  (US Canada).
• Topic Vocabulary Needs A State Perspective
• Presenter Rita Altamore, Washington State
  Department of Health
• Remote attendance info
• Call in number 1-866-427-0077, pass code
  9882982
• Please click on this link to view the webex
  https//dataxchange.saic.com/dataxchange/SAICdefau
  lt.html?ConfRef885751Pin2573

11
Questions
12
PHIN VADS Content and Functionality

• Sundak Ganesan, MD
• Vocabulary Specialist

13
PHIN VADS Content and Functionality

• Vocabulary Basics
• What is available in PHIN VADS?
• PHIN Demo

14
Public Health Data
Hospital data
ICD-9
Insurance Organizations
Patient Care Clinical Data
Patients Billing Data
Public Health Data (PHD/CDC/RHIO)
15
Data Collection- Medical vs Public Health
Public Health
Medical

• Clinical Symptoms
• Fever
• Cough
• Vomiting

• Clinical Symptoms
• Free Text
• Coded Response

x
High Body Temp
Public Health

• Clinical Symptoms
• (YYes, N No, U Unknown)
• Fever Y N U
• Cough Y N U
• Vomiting Y N U

SNOMED - CT - Symptoms Concept Code 386661006
Concept Name Fever
- Question
- Answer
16
Vocabulary Basics
SNOMED-CT
Code System - SNOMED CT
Microorganism

• Influenza A
• Bacillus Anthracis

Domain

• - Microorganism
• Specimen
• Symptoms
• Disease

Disease
Specimen

• - Urine
• - Blood
• Sputum
• CSF

• - Anthrax
• Flu
• Abscess
• IDDM

• Code System Concepts
• - Influenza A
• Urine
• Fever
• Anthrax

Symptoms

• Fever
• Cough
• Vomiting

Value Set - Specimen-TB
17
PHIN VADS
Code Systems
Specimen Type - Value Set
SNOMED Specimen Domain
HL7 v2.5 - Specimen Type
SNOMED-CT
HL7 v3 - Null Flavor
LOINC
PHIN-CDC
HL7 v 2.5
HL7 v3
ICD-9
PHIN /CDC
PHIN VADS Views - BioSense
PHIN Vocabulary Domain - Lab
18
OID Object Identifier

• An Object Identifier (OID) is used to identify a
  vocabulary object (e.g., a code system, a value
  set) that represents a group of concepts.
• Example
• Value Set Infectious Agent (Microorganism)
• Value set OID 2.16.840.1.114222.4.11.908
• Code System SNOMED-CT
• Code System OID 2.16.840.1.113883.6.96
• Note
• Advanced Search in PHIN VADS allows to search
  code system and value sets using OIDs.

19
Vocabulary in PHIN (HL7) Message

• HL7 coded element (CE) data type expects the
  following information for each vocabulary
  concept.
• Concept Code
• Concept Name
• Code System OID
• Example OBX-5 (Observation Result Segment) in
  HL7 represents the concept Bacillus Anthracis
  as follows
• 21927003Bacillus Anthracis2.16.840.1.113883.6.9
  6
• Note
• Code System OID in this example refers to
  SNOMED-CT.

20
Summary - Basics(FAQ in PHIN VADS)
PHIN VADS FAQ URL http//www.cdc.gov/PhinVSBrows
er/html/static/FAQ_v3.html
21
What is available in PHIN VADS?
22
Express Download - Overview
23
Express Download Code Systems
24
Express Download Value Sets(Commonly
Downloaded)
25
Value Sets indexed using PHIN Vocabulary Domain(s)
PHIN Vocabulary Domains
Value Sets
Demographics
Laboratory Tests / Results
Value Sets
26
Express Download Value Sets(PHIN Vocabulary
Domain)
27
PHIN Vocabulary Domains- Demographics
28
Express Download Value Sets(PHIN Vocabulary
Domain)
29
PHIN Vocabulary Domains- Laboratory Tests /
Results
30
Express Download Value Sets(PHIN Vocabulary
Domain)
Sex Race State County
Lab Tests Microorganism Specimen Type
31
Value Sets indexed using Views (programs)
PHIN VADS View
Value Sets
BioSense
PHIN Shared Vocabulary (All Value Sets in PHIN
VADS)
Value Sets
32
Express Download Value Sets(Views)
Sex Race State County
Lab Tests Microorganism Specimen Type
33
Questions
Google Keyword Express Download VADS
34
PHIN VADS Demo