What are the files contained under these categories (LDS and RIFs only)?
Denominator File The Denominator File contains basic demographic, enrollment and eligibility information about each Medicare-enrolled beneficiary during a calendar year. Standard Analytic Files (SAFs): Part A & Part B Claims data The Standard Analytical Files (SAFs) are generated by processing the National Claims History (NCH) file’s raw claims through final action algorithms that match the original claim with adjusted claims to resolve any adjustments. SAFs are available for each institutional claim type (inpatient, outpatient, SNF, hospice, or HHA) and for Non-institutional files (Carrier, DME) beginning with 1991. The record unit of SAFs is the final action claim (some episodes of care may have more than one final action claim). Final action claim files are available to researchers approximately nine months into the following calendar year (for example: 2007 data will become available in September of 2008). The files are annual. Stay Records File (MedPAR): Stay-level data The Medica
