Medicare Part B (Medical Drugs) Prior Authorization & Step Therapy List
A formulary-style list of Medicare Part B medical drugs indicating prior authorization and step therapy requirements and preferred biosimilars for provider requests to Blue Cross Blue Shield - Iowa.
Added authorization requirement effective 11/1/2025 for multiple denosumab and other biosimilar codes (e.g., Q5156, Q5158, Q5159).
Updated step therapy requirements effective 9/1/2025 for Opdivo (J9299) and Keytruda (J9271).
Added preferred trastuzumab biosimilar (Trazimera) as first-line for certain trastuzumab codes (e.g., J9355, Q5112).
Multiple HCPCS/J-code updates and authorization/step therapy requirement changes were recorded with various effective dates (e.g., code updates effective 1/1/2025 and authorization requirement changes effective 3/3/2025 and 5/1/2025).
Authorization requirement effective 3/3/2025 added for J3590 Steqeyma and J3590 Ryoncil.
Update to step therapy requirements effective 5/1/2025 for multiple drugs including J2777 Vabysmo and J3380 Entyvio IV.
Fixed missing step therapy requirements for Rituxan Hycela (5/15/2025 revision).
Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.