Radar on Drug Benefits

PBMs often place biosimilar medications on preferred formulary tiers soon after the drugs hit the market, a change from a few years ago, when payers were more hesitant to cover biosimilars, according to a recent Cardinal Health report. However, one of the report’s authors tells AIS Health that PBMs in some cases have kept the reference biologic product on their preferred tier as well, leading to slower adoption of biosimilars.

For instance, Fran Gregory, Pharm.D., Cardinal Health’s vice president of emerging therapies, notes that CVS Health Corp.'s Caremark, The Cigna Group's Express Scripts and UnitedHealth Group's Optum Rx all added Humira (adalimumab) biosimilars to their national preferred formularies when they launched last year. Gregory says those PBMs were “very strategic” about which of the nine Humira biosimilars to place in a preferred tier, analyzing the wholesale acquisition costs (WACs) and concentrations of the products and tailoring them “based on the lines of business they’re serving.” But the payers all put the same tier as the biosimilars, which Gregory says “is where the challenge lies” with adoption.

The growing use of biosimilars has reduced spending in the Medicare Part B program, but there are opportunities to further reduce costs — through greater use of more affordable biosimilars and through the implementation of different payment policies, according to a study published by the HHS Office of Inspector General (OIG).

The OIG analyzed the average sales prices, utilization and costs of 21 biosimilar drugs and their reference biologic products in the Medicare Part B program between 2015 and 2021. The agency found that overall use rate of biosimilars in Part B jumped from 18% in 2015 to 62% in 2021. While the adoption of biosimilars has lowered both the prices of biologics and biosimilars, Part B spending could have been reduced by $179 million in 2021 if the five biosimilars that cost less than their reference products — epoetin alfa, infliximab, bevacizumab, rituximab and trastuzumab — had been used at the same rate as the most widely used biosimilar, filgrastim.

A lawsuit filed by an employee against Johnson & Johnson could signal that significant changes in the legal obligations of commercial plan sponsors and PBMs around drug pricing are coming, experts say. The suit alleges that J&J violated its fiduciary obligations as a health plan sponsor under the Employee Retirement Income Security Act (ERISA) of 1974 by overpaying the plan’s PBM for employees’ medications.

If it’s successful, the suit could expose plans, plan sponsors and PBMs to significant, ongoing legal risk, experts say. However, they add that the opacity and complexity of drug pricing dynamics mean that the suit’s success is far from certain.

In a new draft guidance document, CMS lays out a litany of tasks Medicare Part D plans must complete to help enrollees take advantage of an Inflation Reduction Act (IRA) provision that allows people to pay off their prescription drug copays over time.

The memo is the second draft guidance document released by CMS regarding the Medicare Prescription Payment Plan, or “copay smoothing” — a program that the managed care sector appears to be growing uneasy about.

“Part D smoothing is coming; it’s coming like a typhoon,” said Nikki Hungate, an industry consultant speaking at the 7th Annual Medicare Advantage Leadership Innovations conference, held Jan. 30-31 in Scottsdale, Arizona.