UNDERCOVER GRANDMOTHER

In the wake of an ABC News undercover investigation, federal authorities in Texas are investigating how an active 82-year-old grandmother was diagnosed as homebound, with a range of ailments that she did not have, including Type 2 diabetes, opening the door to potentially tens of thousands of dollars in Medicare payments for home health care, supplies and equipment she did not need.A hidden camera recorded the undercover grandmother's visit to a doctor in McAllen, Texas, where she told the doctor and nurses she exercised regularly and, other than some hypertension and arthritis, was in excellent health.