Reason Code 5D507: SNF MDS Is Not in the National Repository
The MDS cannot be accessed in the National Repository.
To Prevent This Denial
- Ensure that the MDS has been entered into the National Repository prior to submitting request for payment to Medicare
- Check all bills for accuracy and ensure that the MDS clinical assessment includes data for all covered days associated with the billing period
For more information refer to the CMS Internet-Only Manual (IOM), Medicare Program Integrity Manual Publication 100-08, Chapter 6, Section 6.1.4.B (PDF).