2020-2023.zip -

While the CMS file is the most likely "official" file with that exact name, the date range 2020–2023 is frequently used for other data sets and product reviews:

: The California Department of Insurance provides ZIP code-level data breakdowns for residential insurance trends covering the years 2020–2023 [23]. To provide a more specific review, could you clarify: Where did you download this file? 2020-2023.zip

This ZIP file is part of the CMS Formulary Guidance resources. It provides essential documentation for health plans regarding how to submit and manage pricing data for Medicare Part D prescription drug coverage during that specific four-year window [17, 33]. While the CMS file is the most likely