In excess of 95% of VITAS' net patient service revenue consists of payments from the Medicare and Medicaid programs. Such payments are made primarily on a "per diem" basis, subject to annual reimbursement caps. Because VITAS receives a per diem fee to provide eligible services to all patients, VITAS' profitability is largely dependent upon its ability to manage the costs of providing hospice services to patients. Increases in operating costs, such as labor and supply costs that are subject to inflation, without a compensating increase in Medicare and Medicaid rates, could have a material adverse effect on VITAS' business in the future. Additionally, regulators are increasing scrutiny of claims, including through the new TPE program, which may require additional resources to respond to audits, and which may cause additional delays or denials in receiving payments. Medicare and Medicaid currently adjust the various hospice payment rates annually based primarily on the increase or decrease of the hospital wage index basket, regionally adjusted. However, the increases may be less than actual inflation. VITAS' profitability could be negatively impacted if this adjustment were eliminated or reduced, or if VITAS' costs of providing hospice services increased more than the annual adjustment. In addition, cost pressures resulting from shorter patient lengths of stay and the use of more expensive forms of palliative care, including drugs and drug delivery systems, could negatively impact VITAS' profitability. Many payors are increasing pressure to control health care costs. The U.S. federal budget remains in flux, which could, among other things, cut Medicare payments to providers. The Medicare program is frequently mentioned as a target for spending cuts and within the Medicare program the hospice benefit is often specifically targeted for cuts and a lowering of the Medicare Caps. The full impact on our business of any future cuts in Medicare (including lowering of the Medicare Caps) or other programs is uncertain. In addition, both public and private payors are increasing pressure to decrease, or limit increases in, reimbursement rates for health care services. VITAS' levels of revenue and profitability will be subject to the effect of possible reductions in coverage or payment rates by third-party payors, including payment rates from Medicare and Medicaid.
Each state that maintains a Medicaid program has the option to provide reimbursement for hospice services at reimbursement rates generally required to be at least as much as Medicare rates. All states in which VITAS operates cover Medicaid hospice services; however, we cannot assure you that the states in which VITAS is presently operating or states into which VITAS could expand operations will continue to cover Medicaid hospice services. In addition, the Medicare and Medicaid programs are subject to statutory and regulatory changes, retroactive and prospective rate and payment adjustments, administrative rulings, freezes and funding reductions,all of which may adversely affect the level of program payments and could have a material adverse effect on VITAS' business. We cannot assure that Medicare and/or Medicaid payments to hospices will not decrease. Reductions in amounts paid by government programs for services or changes in methods or regulations governing payments could cause VITAS' net patient service revenue and profits to materially decline.