Oxygen

My mom now has oxygen at 2 liters per hour. Her Dr wrote the prescription but the company providing the oxygen says there isn't enough documentation to bill Medicare. So, hopefully documentation will be made (Every home health care nurse and the nurses in the hospital all ask if she uses oxygen at home- her level was in the 70's at the hospital when she went to get her carotid catheter replaced. The nurses could get it into the low 90s or high eighties by chanting " Smell the roses, blow out the candles" But she naturally breathes very shallowly so it isn't a level she will sustain. $150 a month till documentation is provided that she needs this. She needs it and fortuately can pay. Jeez!!!!