340B Modifier Billing Guidance Update
The Centers for Medicare & Medicaid Services (CMS) issued updated guidance on the use of 340B modifiers for providers and suppliers participating in the 340B Drug Pricing Program and who bill separately for payable Part B drugs and biologicals.
Effective January 1, 2025, providers must use the TB modifier on all 340B drugs provided to MaineCare members whether billing MaineCare for primary or secondary claims.