This variable is the unique identification number assigned to each formulary. Part D plans submit their formularies to CMS and identify the drug products that are covered using the National Library of Medicine’s RxNorm Concept Unique Identifiers (RXCUIs).
The same formulary may be used by more than one plan benefit package (PBP) within a contract.
The CCW constructs a Formulary Characteristics File from the CMS Approved Formulary Data found in the CMS’s Health Plan Management System (HPMS).
This variable is first available in 2010. This variable was always encrypted from 20102012 to comply with CMS privacy rules.
Source: PDE and CMS HPMS (derived)