Scenario: Day 1 patient has prolonged infusion (8 hours or more) via implantable infusion pump (96416 charged); Day 2 patient returns to have pump refilled but also has a chemo infusion service through a separate access site (potentially the same or different drug placed into the pump). Is it appropriate to report 96413 (chemo infusion 1st hour), 96415 for any additional hours, and also 96521-59 for the pump refill? We are attempting to determine if we can consider the pump refill a separate and distinct service (CCI edits identify that modifier 59 can be used if appropriate) since the infusion service is performed via a different access site. Thank you.