For direct care costs: a. The department shall establish standards for payment of allowable direct care costs under par. (am) 1. bm., for facilities that do not primarily serve the developmentally disabled, that take into account direct care costs for a sample of all of those facilities in this state and separate standards for payment of allowable direct care costs, for facilities that primarily serve the developmentally disabled, that take into account direct care costs for a sample of all of those facilities in this state. The standards shall be adjusted by the department for regional labor cost variations. The department shall treat as a single labor region the counties of Dane, Dodge, Iowa, Columbia, Richland, Sauk, and Rock and shall adjust payment so that the direct care cost targets of facilities in Dane, Iowa, Columbia, and Sauk counties are not reduced as a result of including facilities in Dodge, Richland, and Rock Counties in this labor region. For facilities in Douglas, Dunn, Pierce, and St. Croix counties, the department shall perform the adjustment by use of the wage index that is used by the federal department of health and human services for hospital reimbursement under 42 USC 1395 to 1395ggg. b. The department shall establish the direct care component of the facility rate for each facility by comparing actual allowable direct care cost information of that facility adjusted for inflation to the standards established under subd. 1. a. c. If a facility has an approved program for provision of service to residents who have an intellectual disability, residents dependent upon ventilators, or residents requiring supplemental skilled care due to complex medical conditions, a supplement to the direct care component of the facility rate under subd. 1. b. may be made to that facility according to a method developed by the department. cm. Funding distributed to facilities for the provision of active treatment to residents with a diagnosis of developmental disability shall be distributed in accordance with a method developed by the department which is consistent with a prudent buyer approach to payment for services.