Telecommunications, Internet and Dial-up

50.1 - Telecommunications, Internet and Dial-up (Rev. 3346, Issued: 09-04-15, Effective: 10-06-15, Implementation: 10-06-15) A/B MACs, DME MACs and CEDI will support connectivity for EDI functions. These functions include the exchange of EDI transactions at the A/B MACs and CEDI Front End. Online systems include the Medicare Part A Direct Data Entry (DDE) used for claim entry, claim correction, claim status checks, and beneficiary eligibility. Medicare Part B offers the Provider Professional Telecommunications Network (PPTN) and DME MAC offers Claim Status Inquiry to check the status of claims.