Back to Pegasus definition listing Choose a year from the dropdown to view that year's definition 2003 2011 2009 2007 2003 2002 2001 2000 1999 1998 Coma Date: November 2003 Definition: A state of unconsciousness resulting in permanent neurological deficit. Coma secondary to alcohol or drug misuse is not covered.No change since July 1999 Definition update history: Coma May 2011 Coma July 2009 Coma April 2007 Coma November 2003 Coma May 2003 Coma March 2003 Coma April 2002 Coma July 2001 Coma November 2000 Coma November 1999 Coma July 1999 Coma February 1998 Share this by email Back to Pegasus definition listing