B18zip [UPDATED]

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

: The name typically stands for "Cohort 18 Baseline ZIP Code" . The HOS program is used by the Centers

: Researchers use this field to identify the geographic location of survey participants during the initial "Baseline" phase of a study cohort. Context within HOS Data most notably in the documentation .

"B18zip" is a specific data field label used in medical health research datasets, most notably in the documentation .