FARGO, N.C. — Suppliers who have been getting a number of B7 denials got an explanation Friday from Noridian Administrative Services, which said that on July 5, an error in the supplier file information provided to the Jurisdiction D DME MAC by a different CMS contractor caused claims to deny as if a supplier was not accredited.

NAS said it is aware of the problem and that it has begun pending the claims instead of letting them deny while it is working with CMS, the NSC, other DME MACs and the claims processing system maintainer on a solution. Read the complete update.

Insiders said they expect the other MACs to follow suit.