| Meridian Illinois Medicaid Clinical | Lecanemab-irmb (Leqembi) | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Lenvatinib (Lenvima) | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Leucovorin Injection | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Levoleucovorin (Khapzory) | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Lomustine (Gleostine) | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Megestrol Acetate | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Methotrexate (Otrexup, Rasuvo, Xatmep, Reditrex, Jylamvo) | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Mitapivat (Pyrukynd, Aqvesme) | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Mobocertinib (Exkivity) | 2025-11-01 |
| Meridian Illinois Medicaid Clinical | Mogamulizumab-kpkc (Poteligeo) | 2025-11-01 |