CAK-BZ is short for Centraal Administratie Kantoor Bijzondere Zorgkosten – central administration office for exceptional healthcare costs. The job of the CAK-BZ is to register and administer patient fees for AWBZ (non-hospital healthcare) services and the financing of AWBZ institutions (nursing and residential homes). It also has a role in administering patient fees for the WMO (home helps). And you get a lot of acronyms for your money as well.