The date of service is a basic tenet of Medicare billing, and in certain cases, that date may not be the actual date of delivery, writes Devon Bernard, AOPA manager of reimbursement services. CMS allows you to deliver a custom device to a Medicare beneficiary in a hospital or skilled nursing facility within 48 hours of the patient going home, and bill Medicare for the device, as long as the device is used only for training purposes. Bernard outlines criteria for meeting the two-day rule; if met, the discharge date becomes the date of service. Other exceptions include billing for refused items or services, which has its own set of criteria.

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