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An electronic remittance advice (ERA) is an electronic data interchange (EDI) version of a medical insurance payment explanation.[1] It provides details about providers' claims payment, and if the claims are denied, it would then contain the required explanations. The explanations include the denial codes and the descriptions,[2] which present at the bottom of ERA. ERA are provided by plans to Providers. In the United States the industry standard ERA is HIPAA X12N 835 (HIPAA = Health Insurance Portability and Accountability Act; X12N = insurance subcommittees of ASC X12; 835 is the specific code number for ERA)[3], which is sent from insurer to provider either directly or via a bank.[4]