Table. Estimated Steering of Claims for Top 100 Specialty and Nonspecialty Molecules to Insurer-Pharmacy Benefit Manager–Owned Pharmacies in 2021.
| Pharmacy | Share, median (IQR), % | Pair-wise difference, percentage points | ||
|---|---|---|---|---|
| Index firm’s insurer claims filled by its owned pharmacies | Other firm’s insurer claims filled by the index firm’s owned pharmacies | Median (IQR) | Mean (95% CI) | |
| Specialty drugs | ||||
| CVS | 24.7 (17.7-40.4) | 12.2 (9.0-15.9) | 12.8 (5.2-26.3) | 16.8 (13.9-19.7) |
| UHG | 19.7 (4.9-31.4) | 2.1 (0.6-4.4) | 9.4 (3.6-27.6) | 16.0 (12.8-19.1) |
| Cigna | 25.4 (4.9-44.6) | 1.7 (0.2-3.3) | 23.2 (4.7-40.5) | 24.0 (20.0-27.9) |
| Humana | 16.6 (5.8-36.9) | 0.1 (0.0-0.4) | 16.6 (5.7-36.3) | 22.5 (18.2-26.7) |
| All firms | 21.1 (6.7-37.7) | 1.7 (0.2-8.5) | 14.9 (4.7-31.4) | 19.8 (18.0-21.6) |
| Nonspecialty drugs | ||||
| CVS | 30.4 (26.4-34.4) | 15.7 (14.9-17.4) | 13.7 (11.1-17.0) | 13.8 (12.8-14.9) |
| UHG | 11.8 (6.3-17.3) | 0.4 (0.3-0.7) | 11.3 (4.4-16.6) | 11.0 (9.7-12.4) |
| Cigna | 15.4 (5.7-21.0) | 0.4 (0.2-0.6) | 15.0 (5.6-20.5) | 14.1 (12.4-15.8) |
| Humana | 17.7 (9.0-24.4) | 0 (0.0-0.0) | 17.7 (9.0-24.3) | 16.8 (14.9-18.6) |
| All firms | 18.1 (8.8-26.6) | 0.4 (0.0-8.8) | 14.0 (7.4-19.4) | 13.9 (13.1-14.7) |
Abbreviation: UHG, UnitedHealth Group.