Peritoneal infusions vs prolonged chemotherapy

I have a patient that is receiving Peritoneal Infusions (96446) in our office. She recently received a peritoneal infusion with a pump and sent home for 24 hours

Prolonged chemo is coded as 96416 - but how is it coded when it is a peritoneal infusion? would it be 96446 or 96416. thanks for any insights.

Peritoneal infusions vs prolonged chemotherapy