The HCFA-1500 and CMS-1500 forms represent the standard paper claim form for billing Medicare and other insurance carriers. The HCFA-1500 was the original name, used when the Health Care Financing Administration (HCFA) was in place. When the HCFA was renamed to the Centers for Medicare & Medicaid Services (CMS), the form became known as the CMS-1500. The HCFA, Health Care Financing Administration, was renamed to the CMS, Centers for Medicare & Medicaid Services, in 2001.
Both the original HCFA-1500 and the current CMS-1500 are used by providers to bill medical insurance companies. They include information about the patient, the healthcare provider, and the services provided, as well as charges for those services.
Further explanation of form fields on the CMS-1500 form can be found at https://support.speedysoftusa.com/portal/en/kb/how-to-fill-out-the-cms-1500-insurance-claim-form