A key to processing  Stieberger reopenings is understanding the concept of the DEVELOPMENT/PAYMENT periods. The FO
                  must compute the DEVELOPMENT PERIOD and PAYMENT PERIOD(s) prior to sending a case
                  to the DDS.
               
               The settlement agreement permits the DDS, subject to certain exceptions and exclusions
                  explained below, to develop for a limited period, usually starting with the 48th month
                  prior to SSA's receipt of the request for review. (See DI 12586.035 for instructions on computing the  Stieberger DEVELOPMENT PERIOD, including in situations where the class member is deceased.)
               
               The  Stieberger PAYMENT PERIOD is also limited (i.e., benefits for the period prior to 12/1/91 will
                  never exceed 48 months and may be less than 48), although it usually begins earlier
                  than the DEVELOPMENT PERIOD. (See DI 12586.045 (title II) and DI 12586.050 (title XVI) for instructions on computing the PAYMENT PERIOD).