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This variable is contained in the following files: Plan Characteristics File
SAS Name

This variable identifies the type of cost sharing that drugs on the tier are subject to for each formulary tier during the post-out-of-pocket threshold phase (also known as the catastrophic coverage phase). Cost-sharing may include copayment, co- insurance, or the greater/lesser of the two.


This variable was new in 2007. This field is only populated if the Medicare-defined Post Threshold Cost Shares do not apply. The catastrophic coverage phase is also referred to as the post-out-of-pocket threshold phase for the Part D benefit.

The CCW constructs the Plan Characteristics File from information submitted by Part D plan sponsors to CMS’s Health Plan Management System (HPMS). Employer and National Program of All-inclusive Care for the Elderly (PACE) plans are waived from reporting Plan Benefit Package information.

For those plans that did not report, the value of this variable will be blank.

Source: CMS (HPMS Files)

CodeCode value
Greater of Coinsurance and Copayment