This article briefly describes the legislative history of the old-age, survivors, and disability insurance (OASDI) and supplemental security income (SSI) provisions, as well as related Medicare and Medicaid provisions, of the Consolidated Omnibus Budget Reconciliation Act of 1985 (Public Law 99-272). It includes a chronology outlining the interaction of the budget reconciliation process with the development of the OASDI minor and technical changes bill (H.R. 2005) and the development of other social security related legislation resulting in proposals that ultimately combined in the overall Consolidated Omnibus Budget Reconciliation Act of 1985. The article also provides a detailed summary of the provisions of the legislation.