Legacy Identifiers are any number or code assigned to a provider or practice that can be used to identify them beyond their NPI, Tax ID, and Taxonomy code. Typically these are TPI, UPIN, or License numbers, but some carriers use this field in lieu of the CMS defined Taxonomy location as well. Any information listed in the Legacy Identifier field will appear in the shaded area of box 24J on the standard HICFA claim form.
If you are not sure which Legacy Qualifier to use, select the one which best describes the number you have entered in the Legacy Identifier box. You can also select qualifier "G2 - Provider Commercial Number" for a generic identifiers. Note that you can also enter a 2 character qualifier of your own if the one you are looking for is not on the list.