US · guidance
CMS Pub. 100-05, ch. 5, § 10.8
MSP Contractor Numbers
The MSP Contractor accretes MSP records using designated COB contractor numbers. Different
numbers have been assigned for each MSP Contractor activity for purposes of separately capturing
savings attributable to each activity. See Chapter 6, §10.2, for a complete list of MSP Contractor
COB numbers and corresponding Nonpayment/Payment Denial codes and CROWD, MDX, Special
Project numbers.
When the A/B MACs submit an "I" record to CWF, it’s A/B MAC contractor number is shown as the
originating A/B MAC contractor. If the MSP Contractor converts the record to a "Y" with no change
to the information, the originating A/B MAC contractor number remains on the record. If the record
is changed to a "Y" and any of the data elements change, one of the MSP Contractor COB numbers
shows as the originating contractor.
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
ca6b8c15347cdf8a9652f3299d62990d0c5ece092ff9b4a8ba2f340dd5a9fa42
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