Medicare Home Health Payment Improvement Act of 1999

Medicare Home Health Payment Improvement Act of 1999 - Amends title XVIII (Medicare) of the Social Security Act (SSA) and the Balanced Budget Act of 1997 (BBA '97) to eliminate the scheduled 15 percent reduction in payment amounts to home health agencies furnishing home health services under the Medicare program. Allows home health agencies to elect to repay certain overpayments made by the Secretary of Health and Human Services over a 60-month no- interest grace period. Makes such an election effective as if included in BBA '97. Directs the Secretary to report to Congress and the Comptroller General (CG) on the costs incurred by Medicare home health agencies in complying with the Outcome and Assessment Information Set (OASIS) patient data collection requirement. Requires the CG to conduct an independent audit of such costs for a report to Congress. Amends SSA title XVIII to eliminate the incremental billing requirement with respect to home health service visits under the Medicare program.