ABSTRACT: This Volume is the second in a six-volume set. It contains the industry recognized phrases that appear in the Adjustments and Other Charges and Credits section of the bill and Billing Data Tape (BDT) and the associated phrase codes that are provided on the BDT. In addition, this volume also contains the conditions of use for each phrase code and any pertinent notes. The updates for Issue 21 include the addition and modification to Phrase Codes and also adding an Appendix for the change control history of the document. The Appendix is a work-in-progress with the end goal to provide the history of changes from 2000 - present. CABS modifications presented in revisions of this document are summarized to provide a cumulative history of changes. The Appendix identifies the specific additions, deletions and changes made to the supporting text for CABS elements since January 2000.