This guide was written to help you understand the process used by the Centers for Medicare & Medicaid Services (CMS) for approving proposed Workers’ Compensation Medicare Set-Aside Arrangement (WCMSA) amounts and to serve as a reference for those choosing to submit such amounts to CMS for approval. Submitters may include injured workers themselves (claimants), their attorneys, Workers’ Compensation (WC) Medicare Set-Aside Arrangement (MSA) agents or consultants, or claimants’ other appointed representatives.