[Code of Federal Regulations] [Title 20, Volume 1] [Revised as of April 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 20CFR225.32] [Page 431] TITLE 20--EMPLOYEES' BENEFITS CHAPTER II--RAILROAD RETIREMENT BOARD PART 225_PRIMARY INSURANCE AMOUNT DETERMINATIONS--Table of Contents Subpart D_Delayed Retirement Credits Sec. 225.32 DRC's and the Special Minimum PIA. Delayed retirement credits cannot be added to the Special Minimum PIA. Delayed retirement credits can only be added to the regular PIA's used in computing the benefits outlined in Sec. 225.31.