It is essential for mapping, identifying service areas, and adjusting for regional health differences within Medicare Advantage contracts.
The 2015-2017 Cohort 18 Baseline was conducted using version 3.0 of the HOS survey.
The data is pulled from Medicare Advantage Organization (MAO) member records in the 2015 Cohort 18 Baseline RIF (Research Identifiable File) and LDS (Limited Data Set). Role in Medicare HOS
It is classified as a "character" (text) field to preserve leading zeros in ZIP codes.
Understanding how HOS data is used for Star Ratings. Background: The history of Medicare HOS cohorts. Let me know what specific information you need next! hos_dug_c18b.pdf - HOSonline.org
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