The Department shall investigate development of integrated care systems and the feasibility and desirability of applying for a home- and community-based services waiver in order to maximize federal matching funds for the provision of services to adults who: Have functional disabilities, including Alzheimer’s disease and related disorders; Have family income not greater than 200% of the federal poverty level; and Would otherwise require nursing home institutionalization. The services covered under the waiver under this section may include: Routine and emergency respite care; Adult day care; Personal care; Case management; and Homemaker services. The Department may place a reasonable limit on the number of individuals or on the geographic area of the State included in the waiver under this section.