This legislation aims to significantly broaden the scope of costs that hospitals can claim for Medicare reimbursement related to nursing and allied health education programs. It amends the Social Security Act to ensure that all direct and indirect costs incurred by a hospital for these programs are considered "reasonable costs," provided the programs are state-licensed or nationally accredited. This expansion includes costs directly incurred by the hospital, those allocated by a related entity holding the necessary license or accreditation, and expenses associated with training participants at either the hospital or a related entity. The bill defines "related entity" broadly to encompass various forms of common ownership or control, facilitating greater flexibility for health systems and hospital-based schools to provide clinical training and support. Furthermore, the legislation prohibits the Secretary of Health and Human Services from recouping or reducing Medicare payments for costs that would be allowable under these new provisions, effective from the date of enactment. Crucially, it also mandates the Secretary to refund any amounts recouped or reduced from hospitals during the six-year period prior to enactment if those costs would now be considered allowable under the amended rules.