ASC X12 or ANSI ASCX12
ASC X12 (also known as ANSI ASC X12) is the official designation of the U.S. national standards body for the development and maintenance of Electronic Data Interchange (EDI) standards. The group was founded in 1979, and is an accredited standards committee under the American National Standards Institute (ANSI). The acronym stands for "American National Standards Institute Accredited Standards Committee X12", with the designation of X12 being a sequential designator assigned by ANSI at the time of accreditation with no other significance.
ASC X12 has sponsored more than 315 X12-based EDI standards and a growing collection of X12 XML schemas for health care, insurance, government, transportation, finance, and many other industries. ASC X12's membership includes 3,000+ standards experts representing over 350 companies from multiple business domains.