Exhibit 23.1 ------------ CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM -------------------------------------------------------- We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-32139) of CCC Information Services Group, Inc. of our report dated July 13, 2004 relating to the financial statements of the CCC Information Services Inc. 401(k) Retirement Savings & Investment Plan, which appears in this Form 11-K. /s/ PricewaterhouseCoopers LLP Chicago, IL July 13, 2004