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Standard Analytical Files (Medicare Claims) - LDS

Alert September 8, 2017: All LDS Medicare claims file layouts have been updated to include new variables. Please see the revised data dictionaries below.

Alert May 5, 2016:  CMS is pleased to announce that all researchers will be allowed to request LDS claims data on a quarterly basis.  Historically, researchers have only been able to request annual extracts of Medicare claims data under the LDS request process.  Researchers now have the option of requesting LDS claims on an annual or quarterly basis making it easier to do the important research that will lay the foundation for better quality and lower costs in the health care system.

LDS Standard Analytic Files (SAFs), also known as Medicare claims files, are available for each claim type (Inpatient, Outpatient, Skilled Nursing Facility, Home Health Agency, Hospice, Carrier and Durable Medical Equipment).  Detailed file information can be found by viewing the data dictionaries below or visiting the Research Data Assistance Center (ResDAC) LDS File Information page (under Related Links).  

For file cost and availability, please see ResDAC's LDS page or the LDS Worksheet.

Submitting a data request: Please follow the instructions on the DUA - Limited Data Sets page.

See below for the Data Dictionaries:

Current Data Dictionaries Version Format
Carrier Data Dictionary K Excel
Durable Medical Equipment Data Dictionary K Excel
Home Health Data Dictionary K Excel
Hospice Data Dictionary K Excel
Inpatient Data Dictionary K Excel
Outpatient Data Dictionary K Excel
Skilled Nursing Facility Data Dictionary K Excel

Data Dictionaries 2012 - 2015 Version Format
Durable Medical Equipment Data Dictionary J PDF
Home Health Data Dictionary J PDF
Hospice Data Dictionary J PDF
Inpatient Data Dictionary J PDF
Outpatient Data Dictionary J PDF
Physician Supplier Part B Data Dictionary J PDF
Skilled Nursing Facility Data Dictionary J PDF

Historical Data Dictionaries Version Format
Durable Medical Equipment Data Dictionary Pre-2011 PDF
Home Health Data Dictionary Pre-2011 PDF
Hospice Data Dictionary Pre-2011 PDF
Inpatient Data Dictionary Pre-2011 PDF
Outpatient Data Dictionary Pre-2011 PDF
Physician Supplier Part B Data Dictionary Pre-2011 PDF
Skilled Nursing Facility Data Dictionary Pre-2011 PDF