What are Public Use Files: Beneficiary Encrypted Files (BEFs)?
CMS(previously HCFA) creates the BEFs by encrypting/blanking/ranging all identifiers from the associated RIFs. Both BEFs and RIFs have the same record unit, same year available, same file updating schedule, and similar data structure (except for the encrypted variables). CMS requires that appropriate order form, signed DUA, and fees be sent before releasing the BEFs. Compared with RIFs, BEFS are similar in price, but easier to obtain than RIFs. Four types of BEFs can be obtained from CMS: SAFs, Expanded Modified MedPAR Files, Physician/Supplier Part B File, and the Denominator record. Beneficiary-encrypted SAFs for inpatient, outpatient, HHA, SNF, and Hospice are available in three different versions: 5%, 100%, and State. The 5% sample is created based on selecting records with 05, 20, 45, 70, or 95 in position 8 and 9 of the HIC number. Provider numbers and beneficiary claim numbers are encrypted in the 5% files to protect the privacy of individuals. In the 100% and State file, the pr
