The provisions of law with respect to the costs of commitment and the costs of support, including methods of determination of the persons liable for the costs, and all provisions of law enabling the state to secure reimbursement for any such items of cost, applicable to the commitment and support of mentally ill persons in state hospitals shall apply with equal force in respect to each item of expense incurred by the state in connection with the commitment, care, custody and treatment of any person committed to the substance abuse bureau of the division or to any institution maintained by the state. Voluntary patients may be required to pay the cost of their subsistence, care and treatment.