Using Medicare days for an old peg tube

[GNABNA2181]

We have a resident who is about to end with rehab. I'm not sure if I can keep him under medicare part A for his peg tube. It was put in about a year ago according to the resident. He was then admitted to another local nursing home for six months where I'm sure he used his 100 days for the peg. He was then discharged to home app. last May. He took care of himself & the peg at home. He was recently admitted to our local hospital for 3 days for exacerbated COPD & Pneumonia & then discharged to our nursing home for rehab (he also has cancer of head & neck). The COPD & Pneumonia are resolved. He has decided to stay here permanently due to weakness from the cancer. We are giving him the tubefeeding everyday. Can we continue to skill him for the peg even though he has been skilled for the peg before AND the peg was in no way the reason for his hospitalization? Please, help. Thanks, Carole