This document reviews legislative changes in the Social Security Act State Title V programs to improve maternal and child health, including provision of rehabilitative services to children and adolescents eligible for Supplemental Security Income (SSI) and describes how state agencies are serving this population. An introductory section explains the SSI/Disabled Children's Program, the new statutory referral process, state guidance/program regulations (developing individual service plans, providing services, and coordinating with other agencies), and the legacy of SSI/Disabled Children's Programs. The next section focuses on the Maternal and Child Health block grant program including 1981 legislative requirements, 1989 legislative requirements, ongoing responsibility for SSI beneficiaries, the state program role, the role of the Federal Division of Services for Children with Special Health Needs, and block grant performance measures. The third section addresses current provisions of rehabilitative services by Title V programs including the definition of "rehabilitative services", services to help children learn, and services to help young people transition from school to work. A concluding section identifies some future issues. (DB)