In LoopID 1000A, Segment NM1, Field NM109, Submitter Identifier. The clearinghouse we are going to use will input any value we want in that field. Is there no "standard" identifier? Aren't the clearinghouse's assigned a number by someone?(IRS,HIPAA...)
Field NM108, code 46 desribes the data as Electronic Transmitter Identification Number (ETIN).
If anyone has some experience with this, could you please share your thoughts and experience?