The Centers for Medicare and Medicaid Services (CMS) recently confirmed RDs should not bill Medicare Part B for medical nutrition therapy for any diagnosis. Only after the Medicare MNT benefit is effective, January 1, 2002, can RDs bill Medicare Part B for MNT for diabetes and kidney diseases. RDs or the facilities where they are employed cannot bill Medicare Part B for medical nutrition therapy (MNT) prior to January 1, 2002.