Since 96368 is an add-on code, it requires a primary or initial administration code so I interpret that instruction as being the primary admin codes that are required on the claim for 96368 to be billable, excluding add-on codes 96415 & 96366 for add’l hours. Concurrent infusions are defined as “an infusion that occurs at the same time as another infusion” (all credit to AAPC Coder for the definition )…not at the same time as a primary or initial infusion so using 96367 for the other drug is not incorrect in my opinion.

There is an Oncology & Hematology Coding Alert case study from May 2009 that supports the use of 96368 in an example with Dex & Phenergan in two bags, run concurrently, reported with 96367×1 and 96368.

At my last job, most of our concurrent infusions were 5FU/Leucovorin but we occasionally had premeds run concurrently over the years and this is how we reported them.