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The COMP Act is reintroduced in the U.S. Senate

On March 10, 2021, Senators Ben Cardin (D-MD) and Rob Portman (R-OH) introduced the Coordination of Medicare Payments and Workers’ Compensation Act (COMP Act) (S. 653)[1] into the United States Senate. This bill addresses certain aspects of the Centers for Medicare and Medicaid Services’ (CMS’s) Workers’ Compensation Medicare Set-Aside (WCMSA) process. This proposed legislation seeks to amend 42 U.S.C. 1395y(b)(2)(A)(ii) of the Medicare Secondary Payer statute (MSP).

This version of the COMP Act contains identical provisions to a prior version of the COMP Act, which was introduced into Congress as part of the last Congressional session (the 116th Congress)[2]. That prior version of the COMP Act, which garnered only four House co-sponsors, remained in committee and did not come to a vote, and it ultimately expired with the conclusion of the 116th Congress early this year.[3]

In general, the COMP Act (S. 653) seeks to establish a statutory framework for various parts of CMS’s WCMSA process, including codifying certain aspects of calculating WCMSA amounts, along with other collateral items related to WCMSAs. Currently, WCMSA review policies are governed by CMS’s WCMSA Reference guide, and CMS has an established voluntary and optional WCMSA review and approval process.  

Key proposals contained in the COMP Act (S. 653) include:

  • Providing specific legal definitions to key concepts related to the WCMSA process, including the terms: Medicare set-aside, Medicare set-aside amount, and compromise settlement;
  • Outlining circumstances where a WCMSA would satisfy statutory obligations under the MSP statute;
  • Allowing for proportional adjustment of the total WCMSA amount regarding compromise settlement agreements related to denied, disputed, or contested claims;
  • An optional WCMSA approval process requiring CMS to provide notice of approval or disapproval within 60 days and allowing parties to challenge CMS determinations via administrative appeal;
  • An option for direct deposit of the WCMSA funds to Medicare upon the agreement of both parties; and
  • Greater recognition of state and jurisdictional workers’ compensation laws when allocating MSAs.

Going forward, the COMP Act will be referred to committee for review, and we will closely monitor the COMP Act for further study and for its possible mark-up. The bill also awaits a Congressional Budget Office (CBO) score[4]. To date, the bill has not been introduced in the U.S. House of Representatives.

ISO Claims Partners is monitoring this development and will provide future updates as warranted. In the interim, please contact the authors if you have any questions.

[1] The progress of S.653 may be monitored at:

[2] The prior version of the COMP Act was introduced into the U.S. House of Representatives by Representatives Mike Thomson (D-CA) and George Holding (R-NC) on August 2, 2019 as H.R. 4161. The bill ultimately had two additional co-sponsors: Representatives Terri Sewell (D-AL) and Kenny Marchant (R-TX). The bill was introduced in Senate as S.4734 on September 24, 2020 by Senators Ben Cardin (D-MD) and Ron Portman (R-OH).  The bill was referred to Senate Committee on Finance on the same day, but no further action taken before the end of the 116th Congressional session. There were no additional Senate co-sponsors.

[3] See n. 2.

[4] The Congressional Budget Office (CBO) is an independent agency charged with reviewing legislation from a fiscal perspective and “scoring” the proposed bill. Outside of appropriation bills, the CBO is tasked by law to provide a cost estimate for every bill approved by either the full House or Senate committee. The CBO score is often highly regarded as a tool that can help to move certain bills as part of the legislative process. The relevant committee or Congressional leadership may also request the CBO to produce a formal cost estimate of a bill prior to full House or Senate approval. Individual Congressional members may ask the CBO for informal scoring of specific legislation as well which can help prioritize the bill.

The CBO’s website,, describes this process, in part, as follows:

Why does CBO prepare cost estimates?

The Congressional Budget and Impoundment Control Act of 1974, which established the agency, directs CBO to estimate the costs of bills and resolutions approved by Congressional committees other than the House and Senate Appropriations Committees. Such cost estimates are intended to ensure that when the House and Senate consider legislation recommended by committees, Members have information about the budgetary consequences of enacting that legislation that can be used to enforce budgetary rules or targets.

What information is included in a formal estimate?

Cost estimates show how federal outlays and revenues would change if legislation was enacted and fully implemented as proposed—compared with what future spending and revenues would be under current law. Each estimate also includes a statement about the costs of any new federal mandates that the legislation would impose on state, local, or tribal governments or the private sector. For more details on the format of formal cost estimates, see CBO's Cost Estimates Explained.

Mark Popolizio, J.D.

Mark Popolizio, J.D., is vice president of MSP compliance, Casualty Solutions at Verisk. You can contact Mark at

Kate Riordan, J.D.

Kate Riordan, J.D., is director of Medicare Secondary Payer initiatives for Casualty Solutions at Verisk. You can contact Kate at

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