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                                                                    Exhibit 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to:

--   the use in this Registration Statement on Form S-3 of our report dated
     February 4, 2000 relating to the financial statements of Express Scripts,
     Inc., which appears in such Registration Statement;

--   the incorporation by reference in this Registration Statement on Form S-3
     of our report dated February 4, 2000 relating to the financial statements
     and financial statement schedule, which appears in Express Scripts, Inc.'s
     Annual Report on Form 10-K for the year ended December 31, 1999; and

--   the reference to us under the headings "Selected Financial and Operating
     Data" and "Experts" in such Registration Statement.


/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP
St. Louis, Missouri
October 30, 2000