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CMS Pub. 100-05, ch. 5, § 10.5

Notification to A/B MACs and DME MACs of MSP Auxiliary File Updates

activein force · 2026-08-25 – presentas-observed

A/B MACs and DME MACs have the capability to log on to ECRS Web to generate an ECRS report

with a list of their submissions and status of those submissions. A/B MACs and DME MACs can also

search by the beneficiary’s Medicare beneficiary identifier to see what Inquiries/Assistance Requests

have been submitted by all A/B MACs and DME MACs.

A/B MACs and DME MACs shall be cognizant that the CM (i.e., completed) status in ECRS and the

associated ECRS completion date is the same as the CWF maintenance date. A/B MACs and DME

MACs shall use this date to timely resolve pending correspondence and other such workloads to be in

compliance with the CMS 45 calendar day correspondence timeframe or other prescribed timeframes

for designated MSP workloads. A/B MACs and DME MACs shall not send combined interim and

final response letters. The A/B MACs and DME MACs shall follow the procedures cited in Pub. 100-

05, Chapter 5 section 10.5 and Pub. 100-09, Chapter 6 when responding to MSP incoming inquiries.

This means the A/B MACs and DME MACs shall send an interim response if the final

correspondence response cannot be sent within 45 calendar days. A final response is also required

when an ECRS response of CM (completed) is received from the MSP Contractor. If claims are

impacted, the final response shall be either a claim adjustment or, if necessary, direction that the

provider contact the A/B MAC or DME MAC directly regarding any claim adjustments resulting from

an updated MSP record. Contact the MSP Contractor if an ECRS response has not been received

within 45 calendar days.

History

(Rev. 11550; Issued: 08 -12-22; Effective: 10 -13-22; Implementation:10 -13-22)

Provenance

Source
cms.gov
Retrieved
2026-08-25
Edition
iom-2026-08-25
Content hash
16bf05a0ef5a4ded96a3e218476dc047dc78264c0c036001cd9bc62767679f4a
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