Cardiovascular Systems to Webcast Fiscal Fourth-Quarter and Full-Year 2009 Earnings Conference Call Wednesday, August 19.

Live Webcast at 4 p.m. CT (5 p.m. ET)

ST. PAUL, Minn. -- Cardiovascular Systems, Inc. (CSI)(Nasdaq: CSII) will host a live webcast of its fiscal fourth-quarter and full-year conference call on Wednesday, August 19, 2009, at 4 p.m. CT (5 p.m. ET). David L. Martin, president and chief executive officer of CSI, and Laurence L. Betterley, chief financial officer, will discuss the company's results for the fiscal fourth quarter and full year ended June 30, 2009, and its financial outlook. The company will issue a post-market earnings release on August 19.

To access the live webcast, go to the investor information section of the company's Web site, www.csi360.com, on the day of the conference call and click on the webcast icon. A webcast replay will be available beginning at 7 p.m. CT the same day.

To participate in the conference call, dial [phone] and enter 30902713. Please dial in at least 10 minutes prior to the call. Participants may pre-register online for the call by logging on to the following Web site: https://www.theconferencingservice.com/prereg/key.process?key=P6PQPW8VE

If you do not have access to the Internet and want to listen to an audio replay of the conference call, dial [phone] and enter access number 43101085. The audio replay will be available beginning at 8 p.m. CT on Wednesday, August 19, 2009, through 6 p.m. CT on Friday, August 21, 2009.

Cardiovascular Systems, Inc. is a medical device company focused on developing and commercializing interventional treatment systems for vascular disease. The company's Diamondback 360x([R]) Peripheral Arterial Disease System is capable of treating a broad range of plaque types both above and below the knee, including calcified lesions, and addresses many of the limitations associated with existing treatment alternatives. In August 2007, the U.S. FDA granted 510(k) clearance for the use of the Diamondback 360x as a therapy for peripheral arterial disease. Since then, the Diamondback 360x has been adopted by nearly 500 hospitals across the United States. For more information visit the company's Web site at www.csi360.com.