B18zip (2026)

: The name typically stands for "Cohort 18 Baseline ZIP Code" .

: 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 B18zip

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). : The name typically stands for "Cohort 18