Which of the following types of administration makes a drug eligible for 340B?

The eligibility of a drug for the 340B Program is specifically tied to the environment in which the drug is administered. In this case, when a drug is administered during an inpatient stay, it typically involves a hospital setting where an eligible entity, such as an eligible disproportionate share hospital or a freestanding cancer center, provides care. The 340B Program is designed to support covered entities in providing reduced-cost medications to patients, and this administration context allows these facilities to utilize the benefits of the program.

In contrast, administration during outpatient visits, at a pharmacy counter, or solely through mail order does not universally confer eligibility for the 340B program. Outpatient drugs can potentially be eligible under different circumstances stipulated by the program, but inpatient administration is the definitive and clear context that makes a drug eligible for 340B, specifically linking it to a covered entity's ability to dispense discounted medications per the guidelines of the program.