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March 18, 2009
What's in a NPA-NXX
Have you ever been auditing a switched access bill and found yourself wondering what version of the LERG or NECA the vendor is utilizing because what you see in the those reference databases isn’t even close to what is appearing on the vendor’s invoice? More specifically, the NPA-NXX and CLLI combinations do not match what is in the LERG or NECA, making it next to impossible to try to do any sort of analysis on the usage.
This can happen because there are some vendors that have internal tables that are utilized in the invoicing process. These proprietary tables are used to derive a CLLI code based on an NPA-NXX. The CLLI/NPA-NXX combination that is the output of the internal look-up process may or may not match what is in the LERG or NECA. So in order to be able to effectively audit the usage and perform a true apples to apples comparison, you will need to reach out to the vendor to request a copy of their internal table(s) used to populate the CLLI/NPA-NXX combinations on the invoices. This table will then need to be incorporated into the appropriate usage analytics tool. Once the table has been loaded, the appropriate reports can be run to perform the required analysis on the usage.
So the next time that you’re running into issues matching an invoice to LERG or NECA, you may want to reach out to the vendor that is being audited to check to see if they have an internal information that will help facilitate the usage audit process.
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