A supports coordinator is the person who helps develop and monitor an individual support plan and connects the waiver services on it. States also say support coordinator, service coordinator, or case manager. The title is local. The function is the plan: what services, how much, from whom, and whether that is still what the person needs.
This is not the worker on the shift. A coordinator does not usually clock in as a direct support professional, and they do not run the house. They are also not automatically a QIDP. That credential belongs to the ICF/IID rule. A waiver can employ coordinators who have never set foot in an intermediate care facility.
Federal home and community-based rules push states toward conflict-free case management. The idea is that the person who develops the plan should not be the provider who gains hours by writing a bigger plan. States carry that out in different ways. Sometimes coordination sits in a county or a state office. Sometimes it sits in an agency that is barred from also providing the direct service. A family can still feel as if one organization does everything. The paid roles are supposed to be separate.
The coordinator is who a family calls when a service is authorized but nobody is staffed to deliver it, or when the plan no longer matches the week. They are not the payroll office in self-direction. That is the financial management service. Mixing those phone numbers is how a hiring problem gets logged as a plan problem, and the reverse.
If a document says case manager, ask whether it means this waiver role or a medical case manager in a health plan. Both titles are in Medicaid. They are not the same desk.