The minimum case volume regulations of the Federal Joint Committee determine the size of the respective annual minimum number for each site of a hospital, for selected scheduled inpatient services where the quality of the treatment results is dependent on the number of services carried out. In addition, further details on the elucidation of the prognosis are determined in the regulations. Due to the legally defined prognostic procedure as a prerequisite for a prospective justification for service provision, new or altered minimum case volumes come into effect even before the end of the validity period established on the justification for provision of services. The Federal Joint Committee established this basic principle also for the introduction procedure in a resolution from 16 December 2021. This article explains the background and should support the implementation.