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The following information is intended to serve only as companion documentation to the HIPAA ANSI X12N Implementation Guides. Use of these documents is solely for the purpose of clarification. The information in each document describes specific requirements to be used in processing our HIPAA ANSI X12N transactions submitted via Electronic Data Interchange (EDI). Please note that the Supplemental Implementation Guides are subject to change. Check the HIPAA Critical Center for updates. Health Care Claim: HIPAA ANSI X12N 837 Professional 837 Supplemental Implementation Guide Institutional 837 Supplemental Implementation Guide Dental 837 Supplemental Implementation Guide Health Care Claim Status Request: HIPAA ANSI X12 276 276 Supplemental Implementation Guide Eligibility, Coverage or Benefit Inquiry: HIPAA ANSI X12 270 Eligibility, Coverage or Benefit 270 Implementation Guide Electronic Remittance Advice: HIPAA ANSI X12N 835 835 Supplemental Implementation Guide Health Care Services Review: HIPAA ANSI X12N 278 278 Request for Review and Response Supplemental Implementation Guide Enrollment and Maintenance: HIPAA ANSI X12 834 834 Supplemental Implementation Guide