Back to Pegasus definition listing Choose a year from the dropdown to view that year's definition 1999 2011 2009 2007 2003 2002 2001 2000 1999 Heart valve replacement or repair Date: November 1999 Definition: Undergoing open heart surgery from medical necessity to replace or repair one or more heart valves.No change since July 1999 Definition update history: Heart valve replacement or repair May 2011 Heart valve replacement or repair July 2009 Heart valve replacement or repair April 2007 Heart valve replacement or repair November 2003 Heart valve replacement or repair May 2003 Heart valve replacement or repair March 2003 Heart valve replacement or repair April 2002 Heart valve replacement or repair July 2001 Heart valve replacement or repair November 2000 Heart valve replacement or repair November 1999 Heart valve replacement or repair July 1999 Share this by email Back to Pegasus definition listing