Community Mental Health Services Block Grant Reauthorization Act This bill reauthorizes through FY2027 support for crisis care available under the Community Mental Services Block Grant program for adults with serious mental illnesses and children with serious emotional disturbances. The bill also requires states and territories to expend a certain percentage of their grant funds on evidence-based crisis care activities such as crisis call centers, 24/7 mobile crisis services, and crisis stabilization programs in hospitals or other licensed facilities.