Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On January 21, 2009, the Board of Directors (the "Board") of Tenet Healthcare Corporation (the "Registrant") approved amendments to and a restatement of the Registrant's Restated Bylaws (as amended, the "Restated Bylaws"). The amendments establish a majority voting standard in non-contested elections of directors and are effective as of January 12, 2009. Under Section 2.7.3 of the Restated Bylaws, in elections of directors a nominee for director will be elected to the Board if the votes cast for such nominee's election exceed the votes cast against such nominee's election; provided, however, that directors will be elected by a plurality of the votes cast at any meeting of shareholders for which (1) the Secretary of the Registrant receives a notice that a shareholder has nominated a person for election to the Board in compliance with the advance notice requirements for shareholder nominees for director set forth in
Section 2.10 of the Bylaws and (2) such nomination has not been withdrawn by such shareholder on or prior to the tenth day before the Registrant first mails its notice of meeting for such meeting to the shareholders. Prior to the amendment and restatement, directors were elected by a plurality of the votes cast in all cases.

The preceding summary does not purport to be complete and is qualified in its entirety by reference to the Restated Bylaws, which are attached hereto as Exhibit 3(a) and incorporated herein by this reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

3(a) Restated Bylaws of the Registrant, as amended and restated effective January 12, 2009

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