CMS Pub. 100-04, ch. 22, § 50.1

As part of the Medicare DNF Initiative, A/B MACs and DME MACs must use “return

service requested” envelopes for mailing all hardcopy remittance advices. When the post

office returns a remittance advice due to an incorrect address, follow the same procedures

followed for returned checks; that is:

• Flag the provider “DNF”; A/B MAC staff must notify the provider enrollment

area, and DME MACs must notify the National Supplier Clearing House (NSC);

• Cease generating any further payments or remittance advice to that provider or

supplier until they furnish a new address that is verified; and

• When the provider returns a new address, MACs remove the DNF flag after the

address has been verified, and pay the provider any funds still being held due to a

DNF flag. MACs must also reissue any remittance that has been held as well.

NOTE: Previously, CMS required corrections only to the “pay to” address. However,

with the implementation of this new initiative, CMS requires corrections to all addresses

before the MAC can remove the DNF flag and begin paying the provider or supplier

again. Therefore, do not release any payments to DNF providers until the provider

enrollment area or the National Supplier Clearinghouse (NSC) has verified and updated

all addresses for that provider’s location. MACs must initially publish the requirement

that providers must notify the A/B MAC or NSC of any changes of address, both on their

Web sites and in their next regularly scheduled bulletins. MACs must continue to remind

suppliers and providers of this requirement in their bulletins at least yearly thereafter.

See Chapter 1 for additional information pertaining to the DNF initiative.