This variable is the gross drug cost (TOT_RX_CST_AMT) of all Part D drugs for a given year. This value includes the ingredient cost, dispensing fee, sales tax (if applicable), and vaccine administration fee (if any, 2010+ only).
This is the price paid for the drug at the point of sale (i.e., the pharmacy counter), and it does not include any rebates or discounts that the drug manufacturer provides directly to the Part D plan sponsor.
The value will be null if the beneficiary was not enrolled in Part D or did not use any Part D drugs during the year.
Source: CCW (derived)