Research Identifiable Files (RIF) Requests KnowledgeBase Articles

RIF Medicare Quarterly Data

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Researchers may now request data on a quarterly basis, in addition to the annual files.

Data available on a quarterly basis includes Medicare Research Identifiable FFS claims (Inpatient, Outpatient, Home Health Agency, Hospice, Skilled Nursing Facility, Carrier, and Durable Medical Equipment) and the Master Beneficiary Summary File: Base A/B segment.

File Sizes for Medicare and Medicaid Research Identifiable Files

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The table below provides file sizes in gigabyte for recent, commonly requested 5% and 100% Research Identifiable Files, as provided by the Chronic Conditions Warehouse. Estimated sizes are provided for files accessed in the Virtual Research Data Center (VRDC) as well as those physically distributed on a hard drive (self-decrypting archive (SDA) files) to researchers.

Inclusion of Hospital and Skilled Nursing Stays in the RIF Annual MedPAR and Claims Data

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Researchers working with the Research Identifiable (RIF) versions of the MedPAR or Inpatient and Skilled Nursing Facility (SNF) claims may find records that do not appear to correspond to the year of the file. These instances can usually be explained by how stays or claims are included in the files during file creation.