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Immunization Information Systems (IIS)








IIS Deduplication						Print
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										Deduplication of immunization records is a two-fold problem that includes deduplication at the demographic/patient level (e.g., two records describe the same patient) and deduplication at the vaccination event level (e.g., two records describe the same immunization). Resources have been developed to assist with both aspects of deduplication.
Vaccine Level Deduplication
For best practices regarding vaccine level deduplication, see the Modeling of Immunization Registry Operations Workgroup (MIROW) Vaccination Level Deduplication in Immunization Information Systems [102 pages] guide.
Patient Level Deduplication
Patient deduplication is the process of removing redundant patient records from a database, preventing fragmented and duplicate information from being processed and ensuring that updates and queries apply to the correct record.
Inconsistencies in determining which records represent the same patient, as well as errors in combining patient’s immunization records, negatively affect the overall data quality and usefulness of Immunization Information Systems (IIS). The following resource was developed by subject matter experts in the field of patient deduplication and matching.
Patient-Level Deduplication Best Practices [78 pages] (Jun 2013)
Best practice guidelines on patient-level de-duplication, intended for programmatic, technical, and operational experts involved in creating or maintaining an IIS.If you have any questions, please send them via email to iisinfo@cdc.gov.
							
					
							Last Reviewed:  June 7, 2019						Source: 	National Center for Immunization and Respiratory Diseases
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About IIS
Functional Standardsplus icon
Version 4.1
Core Data Elementsplus icon
Core Data Elements For IIS Functional Standards v4.0
Historical Core Data Elements
Data Code Setsplus icon
CVX
CVX Mapped to Vaccine Groups
CVX Mapped to VIS
MVX
Product Name Mapped to CVX/MVX
NDC Crosswalk Tables
VIS Barcode Lookup Table
VIS URL Table
CPT Mapped to CVX
Fall Season Respiratory Vaccine Codes
IIS Technical Guidanceplus icon
HL7
Transport (SOAP)
Deduplication
Clinical Decision Support for Immunization (CDSi)plus icon
CDSi Training Material
IZ Gatewayplus icon
Overview
Information Sheet
Awardee Forum Q&As
Meaningful Use
Vaccine 2D Barcodesplus icon
Vaccine 2D Barcoding for Manufacturers
Vaccines Shipping with 2D Barcodes
Vaccine 2D Barcode Scanning for Vendors
Vaccine 2D Barcode Scanning Initiatives
Vaccine 2D Barcode Scanning Implementation Toolkit
CDC IIS Activitiesplus icon
MIROW
NIS-IIS Collaboration
Sentinel Sites
IIS Strategic Planplus icon
2018-2020
2014-2017
Contacts for IIS Immunization Records
IIS Policy and Legislation
IIS Annual Report (IISAR)plus icon
Overview
Participation Rates and Maps
MMWR Articles on Annual Report Data
IISAR Survey Data
IIS Training
Resources & Reference Materialsplus icon
Acronyms
Conferences & Events
Frequently Asked Questions
Functional Standards Resource Guide
Partner Organizations
Publications
Sustainability Resources National Center for Immunization and Respiratory Diseases
Centers for Disease Control and Prevention
1600 Clifton Road NE, Building 24
Mailstop A-19
Atlanta, GA 30333
iisinfo@cdc.gov
 Vaccines & ImmunizationsCDC Meaningful UseVaccine Tracking System (VTrckS)Vaccines for Children Program (VFC)Vaccine Management Business Improvement Project (VMBIP)Comprehensive Clinic Assessment Software Application (CoCASA)


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