The Iowa Medicaid NPI Crosswalk facilitates the alignment of National Provider Identifiers (NPI) with Medicaid records, ensuring streamlined billing and regulatory compliance for healthcare providers in the state.
Payer Specific Bill ID/Submitter ID
This payer requires a payer assigned ID number. This value can be sent in block 33b, bill_id Loop 2010AA, REF02, REF01=G2. This submitter ID value will be acquired during enrollment or by contacting Noridian EDISS.

Understanding Iowa Medicaid Submitter ID Errors
If you encounter a claim rejected due to the Submitter ID, it may indicate that the Submitter ID used on the claim was invalid. For IA Medicaid, the Submitter ID must begin with “IA” followed by five or six digits (for example, IA12345).
You may also receive an error message if the Bill/Submitter ID field is left blank. Ensure this field is completed using the correct Submitter ID format to avoid claim rejections.
Below is an example of a claim rejection caused when the Bill/Submitter ID field is left blank: