Below are links to Federal rules and legislation related to copay accumulators:

2020 Notice of Benefit & Payment Parameters, Final

Centers for Consumer Information & Insurance Oversight Factsheet issued August 2019

2021 Notice of Benefit & Payment Parameters, Final

2021 H.R. 5801 The HELP Copays Act introduced by Representative Donald McEachin (VA)

2023 H.R. 830 The HELP Copays Act Reintroduced by Representative Earl “Buddy” Carter (GA)