01Oxygen and oxygen supplies are covered for appropriately selected patients only when a physician prescribes oxygen within 30 days of the documentation, and the prescription must specify the diagnosis requiring oxygen, oxygen concentration and flow rate, frequency of use (for intermittent or leave-in therapy, time limits and specific indications for starting and stopping), method of delivery, and duration of use.
02An indefinite prescription is periodically reviewed to determine whether a medical need continues, and patients on long-term oxygen therapy are periodically re-evaluated to assess whether hypoxemia persists.
03Do not bill oxygen prescribed for use as needed (PRN), and do not bill portable oxygen systems for patients who qualify for oxygen solely on blood gas studies obtained during sleep.
04Oxygen furnished in facilities expected to supply it, setup or installation of respiratory support systems, preset regulators used with portable systems, regulators permitting a flow rate above 8 liters per minute, and an excessive number of spare tanks are not medically necessary.
05Accessories such as nasal cannula, mask, tubing, tent, humidifier, nebulizer, regulator, flow meter, maxi-mist and oxygen gauge are an integral part of the rental or purchase allowance for the delivery system, and carts, racks or stands are included in the supplier's fee and are not covered separately.
06If more than one tank is required in a month, the cost of the oxygen in two or more tanks is covered, but rental is paid for the initial tank only.
07E tanks normally do not qualify as a portable oxygen system, although an E tank may be medically necessary when the patient has a stationary tank at bedside.
08Repair or replacement of components during rental is the responsibility of the DME supplier, and purchased equipment is repaired or replaced only within a reasonable time of purchase, subject to its lifetime expectancy.