340B Program Improvement Act

340B Program Improvement Act - Amends the Public Health Service Act to make revisions to the 340B drug discount program (a program limiting the cost of covered outpatient drugs to certain federal grantees).

Includes drugs used in connection with an inpatient or outpatient service by enrolled hospitals as covered drugs under the program (currently, only outpatient drugs are covered under the program).

Requires hospitals enrolled in the 340B program to provide to each state a credit on the estimated annual purchases by such hospitals of covered drugs provided to Medicaid recipients for inpatient use. Sets forth a formula for calculating the credit. Allows a hospital to avoid paying such credits under certain circumstances.

Eliminates the requirement that hospitals enrolled in the 340B program report the National Drug Code numbers for drugs administered by a physician if the state is precluded from seeking a rebate on such drugs because they were purchased at a discount under the 340B program.

Removes the exclusion that prohibited covered entities added to the 340B program under the Patient Protection and Affordable Care Act from purchasing drugs for a rare disease or condition as covered outpatient drugs.

Treats a facility or organization that is eligible for the 340B program as satisfying any geographic location requirements in relation to a hospital or a critical access hospital for purposes of determining provider-based status under Medicare.