The HOS program is used by the Centers for Medicare & Medicaid Services (CMS) to gather data on the quality of care provided by Medicare Advantage Organizations (MAOs).
It is not a consumer file compression software like WinZip or 7-Zip. Instead, it refers to the associated with specific research "Cohorts." Technical Definition B18zip
: Refers to a specific group of survey participants, specifically those part of the 2015 HOS Baseline. The HOS program is used by the Centers
"B18zip" is a specific data field label used in medical health research datasets, most notably in the documentation . "B18zip" is a specific data field label used
: It is a character field (usually 22 characters in length) found in research files like the Baseline Research Identifiable File (RIF) or Limited Data Set (LDS) .
: You may see it alongside other coded fields like F18PBPID (Plan Benefit Package ID) or STATE in the HOS Data User’s Guide .
: The name typically stands for "Cohort 18 Baseline ZIP Code" .