53-18-105. Special account. There is created within the self-sufficiency trust account a special account for the disabled. The director of the department may accept money from any source for deposit into the special account. The money in the special account must be used by the department, subject to appropriation, for the purpose of providing for the care and treatment of low-income persons with developmental disabilities, mental illness, or physical disabilities or low-income persons otherwise eligible for department services, as defined by the department.