NCHS Data Linkage

Restricted-Use NCHS-CMS Medicare Data

NCHS survey data have been linked to Medicare data containing information on the enrollment status, health care utilization and expenditures of Medicare beneficiaries. Each file contains information collected by Medicare to pay for health care services provided to a Medicare beneficiary.

Descriptions of the Medicare files that have been linked to NCHS survey data can be found in the following online report:

NCHS-CMS Medicare Matching Methodology and Analytic Considerations Cdc-pdf[PDF – 236 KB]


Data Access

Due to confidentiality requirements, the Restricted-use NCHS-CMS Medicare Data are accessible only through the NCHS Research Data Center (RDC). All interested researchers must submit a research proposal to the RDC. Please see the RDC web site for instructions on submitting a proposal (RDC website).

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. Please consult the Public-Use NCHS-CMS Medicare Feasibility Files page for more information.


Restricted Use Data Dictionaries:

Variable List:

Page last reviewed: January 22, 2019, 10:55 AM