Figure 2. Steering of Claims for the Top 100 Specialty and Nonspecialty Molecules to Insurer-Pharmacy Benefit Manager (PBM)–Owned Pharmacies in 2021.

Insurer-molecule pairs for which either coordinate was based on data from fewer than 11 patients were censored to 0 to satisfy cell-size suppression rules in Centers for Medicare & Medicaid data use agreements. The highlighted area indicates that the share of the index firm’s insurance claims filled by its owned pharmacies was greater than the expectation without steering. UHG indicates UnitedHealth Group.