consentofpublicacctfirm.htm

We hereby consent to the incorporation by reference in the Registration Statement on Forms S-8 (Nos. 333-156092, 333-136616, 333-110573, 333-43336, 333-80255, 333-72441, 333-69855, 333-48779, 333-48767, 333-48765, 333-27983, 333-04291, 33-64094, 33-64278, 33-93106) of Express Scripts, Inc. of our report dated February 24, 2009 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.