What is the correct length of a UPN?
The UPN length varies depending on the coding organization. The maximum length of the UPN is 19-digits. Providers must place all digits of the UPN listed in the provider manual on their claim. • The current Medi-Cal provider manual states that UPNs can be submitted on an attachment or in the Remarks field on Computer Media Claims (CMC) for some contracted products. In the August 27, 2008 Roundtable PowerPoint presentation, it states that the UPN can be submitted in the 2410 service line loop. When will that change take place? A: This change becomes effective for dates of service on and after April 1, 2009. The ASC X12N 837P 4010A1 Companion Guide has been updated with instructions for submitting the UPN in the 2410 service line loop of this transaction. All applicable claims must have the UPN submitted in the 2410 service line loop for dates of service on or after July 1, 2009.
