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NCHS Data Linked to CMS Medicare Enrollment and Claims Files & USRDS End Stage Renal Disease 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) and End Stage Renal Disease (ESRD) data obtained from the United States Renal Data System (USRDS). Linkage of the NCHS survey participants with the CMS Medicare and USRDS ESRD 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 Medicare 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 2007 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. CMS also provided to NCHS Medicare Part D data for 2006 and 2007; and Chronic Condition (CC) Summary data for 2005 through 2007.

NCHS Surveys linked to CMS Medicare data (1991–2007*)

  • 1994-1998 National Health Interview Survey (NHIS)
  • NHANES I Epidemiologic Follow-up Study (NHEFS, 1971-1992)
  • Third National Health and Nutrition Examination Survey (NHANES III, 1988-1994)
  • The Second Longitudinal Study of Aging (LSOA II, 1994-2000)

NCHS Surveys linked to CMS Medicare data (1999–2007*)

  • 1999-2005 National Health Interview Survey (NHIS)
  • 1999-2004 National Health and Nutrition Examination Survey (NHANES)
  • 2004 National Nursing Home Survey (NNHS)
  • *Beta versions of 2008-2009 linked NCHS-CMS Medicare data are currently available. Please contact the NCHS Data Linkage Team for more information.

 

Overview of NCHS-USRDS ESRD Linkage

ESRD 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 USRDS administrative records. ESRD patient data covering service from 1974-2008 are available for the following NCHS surveys:

  • 1994-2005 National Health Interview Survey (NHIS)
  • 1999-2004 National Health and Nutrition Examination Survey (NHANES)
  • 2004 National Nursing Home Survey (NNHS)
  • NHANES I Epidemiologic Follow-up Study (NHEFS)
  • Third National Health and Nutrition Examination Survey (NHANES III)
  • The Second Longitudinal Study of Aging (LSOA II)

 

Accessing the NCHS-CMS Medicare and NCHS-USRDS Data

The linked NCHS-CMS Medicare files are restricted-use files that can be accessed through the NCHS Research Data Center (RDC). NCHS has created Feasibility Study Data files to assist researchers who are considering submitting an RDC application to analyze the linked NCHS- CMS Medicare data. Due to risk of disclosure, the CMS Medicare Feasibility Study files do not contain any variables for the linked ESRD data.

 

Analytic/Programming Support

 

Contact Information

After carefully reviewing web documentation, any remaining questions can be directed to:

 

 
Contact Us:
  • National Center for Health Statistics
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    Room 5419
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  • 1 (800) 232-4636
  • Contact CDC–INFO
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