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This variable is contained in the following files:
SAS Name
BENE_ID
The unique CCW identifier for a beneficiary.
The CCW assigns a unique beneficiary identification number to each individual who receives Medicare and/or Medicaid, and uses that number to identify an individual’s records in all CCW data files (e.g., Medicare claims, MAX claims, MDS assessment data).
This number does not change during a beneficiary’s lifetime and each number is used only once.
The BENE_ID is specific to the CCW and is not applicable to any other identification system or data source.
Source: CCW