EXHIBIT 23 CONSENT OF INDEPENDENT ACCOUNTANTS 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 October 12, 1998 appearing in the Annual Report of the CCC Information Services Inc. 401(k) Retirement Savings & Investment Plan on Form 11-K for the year ended December 31, 1997. PRICEWATERHOUSECOOPERS LLP Chicago, Illinois November 20,1998