I am looking for some guidance in coding/billing for drug waste due to a patient having an allergic reaction. I am aware that modifier JW is needed for waste from single dose vials, but is it necessary to report waste separately for unused drugs that are discarded from a multi-dose vial?

For example: if a patient is scheduled to receive 140mg of Bendeka, but due to a noticeable reaction the patient only receives 45 mg and the remaining 95 is wasted, how is this reported to still get paid for the remaining 95mg?

Thank you, and I appreciate your help!
Asia