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Medicare Billing: 8371 and Form CMS-1450 (UB-04)
The 837I (Institutional) is the standard format used by institutional providers to transmit health care claims electronically. The Form CMS-1450, also known as the UB-04, is the standard claim form to bill Medicare Fee-For-Service (FFS) Contractors when a paper claimis allowed. In addition to billing Medicare, the 837I and Form CMS-1450 may be suitable for billing various government and some private insurers.