National Average Drug Acquisition Cost Survey – The NADAC survey process focuses on retail community pharmacy drug ingredient costs. The survey collects acquisition costs for covered outpatient drugs purchased by retail community pharmacies, which include invoice purchase prices from independent and chain retail community pharmacies.
Included in the Survey of Retail Prices, in addition to a survey of the cost pharmacies incur to purchase drugs, CMS collects information on consumer prices for the purchase of drugs. This survey focuses on the collection of retail community pharmacy prices charged to consumers and the calculation of consumer unit drug prices.
Further reading –