This rule establishes requirements and procedures for advance payments to suppliers of Medicare Part B services. An advance payment will be made only if the carrier is unable to process a claim timely; the supplier requests advance payment; we determine that payment of interest is insufficient to compensate the supplier for loss of the use of the funds; and, we expressly approve the advance payment in writing. These rules are necessary to address deficiencies noted by the General Accounting Office in its report analyzing current procedures for making advance payments. The intent of this rule is to ensure more efficient and effective administration of this aspect of the Medicare program.