Behavioral Health Crisis Services Expansion Act This bill establishes requirements, expands health insurance coverage, and directs other activities to support the provision of behavioral health crisis services along a continuum of care. Specifically, the Department of Health and Human Services (HHS) must establish standards for a behavioral health crisis continuum of care that health care providers and communities may use in responding to individuals experiencing a behavioral health crisis. This continuum of care must include 24-7 crisis hotlines, emergency treatment, stabilization services, and other specified components. In addition, the bill expands health insurance coverage for behavioral health crisis services. It also expands the Community Mental Health Services Block Grant to assist states and territories with developing the infrastructure to provide crisis response services. Furthermore, HHS, in consultation with the Department of Justice, must convene an expert panel to make recommendations concerning training for emergency services dispatchers and crisis call center personnel to respond appropriately to individuals experiencing a behavioral health crisis.