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NCHS-CMS Linkage: Medicare Enrollment and Claims Files

NCHS has developed a record linkage program designed to maximize the scientific value of the Center's population-based surveys. NCHS is currently linking various NCHS surveys with Medicare enrollment and claims records collected from the Centers for Medicare and Medicaid Services (CMS). Linkage of the NCHS survey participants with the CMS Medicare data provides the opportunity to study changes in health status, health care utilization and expenditures in the elderly and disabled U.S. population.

 Overview of NCHS-CMS Linkage

Medicare enrollment and claims data are available for those NCHS respondents who agreed to provide personal identification data to NCHS and for whom NCHS was able to match with Medicare administrative records. CMS provided NCHS with Medicare benefit claims data for 1991 through 2000 for all successfully matched NCHS survey participants. For certain NCHS surveys, the Medicare administrative files include data from before and after the survey year of interview.

 

 Description of the Linkage

 NCHS Surveys linked to CMS data

 1994-1998 National Health Interview Survey (NHIS)

 NHANES I Epidemiologic Follow-up Study
(NHEFS, 1971-1992)

 Second National Health and Nutrition Examination Survey (NHANES II, 1976-1980)

 Third National Health and Nutrition Examination Survey (NHANES III, 1988-1994)

 The Second Longitudinal Study of Aging
(LSOA II, 1994-2000)

 

 Accessing the NCHS-CMS Data

 Overview of request process

 Checklist for RDC application

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 NCHS Research Data Center (RDC)

 Feasibility Study Data

 

 Analytic/Programming Support

 NCHS-CMS Data File Documentation

 Medicare Enrollment and Claims Data Analytic Issues

 CMS Linkage Methodology Report

 Match Rate Table for NCHS-CMS Linked Data

 Sample Counts for NCHS-CMS Linked Data

 Frequently Asked Questions (FAQ’s) regarding the Medicare data (Links to RESDAC)

 Contact Information

 

 

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This page last reviewed December 16, 2008

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U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES
Centers for Disease Control and Prevention
National Center for Health Statistics
Hyattsville, MD
20782

1-800-232-4636