EXHIBIT 23 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-107016) and Forms S-8 (Nos. 33-38465, 333-49669, 333-88354 and 333-88328) of Hillenbrand Industries, Inc. of our report dated December 3, 2004 relating to the financial statements and financial statement schedule, which appears in this Form 10-K. /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP Cincinnati, Ohio December 3, 2004 1