A national formulary—essentially a list of drugs—is unlikely to match the comprehensive lists covered by private insurance plans.
preferred drug lists
Worried about rising expenditures for prescription drugs, many states are employing preferred lists to encourage doctors to prescribe older, lower-priced drugs and forego the latest, more expensive medicines.
If Congress succeeds in passing a Medicare prescription drug benefit this year, the debate over preferred drug lists - now raging in numerous states - is likely to explode onto the national stage.
The lists - also known as formularies - are, whether we like it or not, a form of rationing. Ask any Canadian.