The Free On-line Dictionary of Computing (30 December 2018):

Data Interchange Standards Association

    (DISA) A not-for-profit corporation that acts as
   the secretariat for ANSI's EDI standards committee, ASC
   X12 that works on ANSI X12.  DISA manages ASC X12's
   membership, balloting, standards development and maintenance,
   publications, and communications with ANSI.

   (1999-09-18)