HCFA (US Health Care Financing Administration) lists products for special payments:

The US Health Care Financing Administration (HCFA) has issued an expanded list of products that will be eligible for a special additional payment under Medicare's new outpatient prospective payment system due to go into effect on July 1. HCFA, which administers the Medicare health plan for the elderly and disabled, received 336 applications for more than 550 items and expects to make "pass-through" payments for 340 procedural codes encompassing 423 items. Those items that did not qualify for the two-to-three year pass-through payment will be automatically considered for placement in the new technology ambulatory classifications where they are likely to receive a comparatively high reimbursement, HCFA said. No further additions to the list can be made before the implementation date, HCFA said, but additional items will be reconsidered in October.