A patient has a surgical procedure that allows them a 90-day global post operative care at no charge, however this patient had a wound vac applied at the time of the surgery that remained in place past the 90 day global. My question is does this patient get the 90 day global extended because of the application of the wound vac and the fact that it was tied to the surgery? Or does the patient then flip to become a billable visit and charged a copay?

Thank you