This report published by The Heritage Foundation reiterates the fact that the projections created for the cost and savings of the Patient Protection and Affordable Care Act were only estimates based upon many variables.

From the report:

The Patient and Protection and Affordable Care Act (PPACA) is one of the largest and most controversial pieces of legislation ever enacted. Many economists and policy analysts have very different views on what effect PPACA will have on business, government finances, and the health care industry. During the debate, the Congressional Budget Office (CBO) had the daunting task of issuing the official estimate of the bill’s costs and savings. In announcing its findings, CBO director Douglas Elmendorf emphasized the uncertainty of the estimates.

Full Report: The Uncertainty of Health Care Projections (PDF | 164 KB)