Final answer:
Hydration therapy lasting 45 minutes before a chemotherapy session is coded as 96360 in medical coding, which refers to the initial hydration infusion of 30 minutes or more.
Step-by-step explanation:
The question asks about the correct coding for hydration therapy infusions prior to a chemotherapy session. Hydration therapy is commonly given when a human patient needs to replenish fluids intravenously, often due to dehydration. In medical coding, especially with reference to the Current Procedural Terminology (CPT) codes provided, the intravenous infusion for hydration that lasts for an initial 30 minutes or more is coded as 96360. If the hydration infusion lasts longer than an hour, each additional hour is coded as 96361. In Frank's case, since the hydration lasts only 45 minutes, it is appropriately coded as 96360 only.