Joanne, You are right. I would assume the same limits that apply to the other surgerys would also be applicatble to stimulation surgery. I would assume that the stimulator could be removed and the patient claim to be without surgical intervention. The wording on most drug progrms I've seen states disqualification if a surgery has been performed. Since so much documentation must be submitted on each participant, the mention of a PD surgery even of this type would most likely cause the participant to be rejected. Regards, Alan