Mississippi Medicaid

Welcome to the ACS EDI Gateway's Home Page for Mississippi Medicaid!

Please read this Important Information!

  • Please call 800.884.3222 for Point of Sale (POS) questions.

ACS EDI Gateway, Inc. accepts HIPAA-mandated transactions.

Electronic Transactions Available for Mississippi Medicaid

  • 837 Institutional
  • 837 Dental
  • 837 Professional
  • ACS WINASAP 2003 Field Software
  • (X12N 270) Eligibility Inquiry
  • (X12N 276) Claims Inquiry
  • (X12N 278) Prior Authorization