National Average Drug Acquisition Cost

{{Short description|Medicine pricing system in United States}}

{{Use dmy dates|date=September 2023}}

The National Average Drug Acquisition Cost (NADAC) is the approximate invoice price pharmacies pay for medications in the United States.{{Cite web |url=https://us.milliman.com/uploadedFiles/insight/2018/NADAC-plus.pdf |title=Archived copy |access-date=25 November 2019 |archive-date=15 August 2021 |archive-url=https://web.archive.org/web/20210815223913/https://us.milliman.com/uploadedFiles/insight/2018/NADAC-plus.pdf |url-status=dead }} This applies to chain and independent pharmacies but not mail order and specialty pharmacies. Rebates pharmacies may receive after paying an invoice are not included. The NADAC data is calculated by the Centers for Medicare and Medicaid Services.