its order that it adjudicated "the issue of plaintiff's disability at all times on and before December 31, 1985."   Because Estep engaged in self-employment in 1984, the date he was last insured was extended through December 1986.


3
The application that serves as the basis of this appeal was Estep's fifth application for benefits, which he filed in March 1991.  An ALJ dismissed the application in November 1991.  The ALJ noted in his dismissal order that Estep was last insured for disability benefits on December 31, 1986, and held that administrative exhaustion applied since a final administrative determination denying benefits based upon the same facts and issues ruled that Estep was ineligible for benefits through May 1987.  Estep was denied reconsideration of this order, andThe district court stated it would "consider the current appeal to encompass the issue of plaintiff's disability at all times on and before December 31, 1985."   But the record is undisputed that Estep was eligible for an extension of his insured status from December 31, 1985 to December 31, 1986, because of work he performed in 1984.2  Therefore, to the extent that Estep disagreed with the district court regarding his insured status for the 1986 period, he could have objected to the district court's finding.  He did not.  Thus, the district court's ruling is final and Estep's claim regarding his insured status during 1986 is barred by res judicata as a claim that "might have been offered" in the previous cause of action.