Box Definition
Boxes 64a, 64b, and 64c on the UB-04 are where the document control numbers (DCNs) are shown. This number can also be called the Internal Control Number (ICN).
- A - Primary
- B - Secondary
- C - Tertiary
In AveaOffice
To change the document control number on the claim form:
- Navigate to the patient's Insurance Billing > Claims tab.
- Click the claim ID that needs the document control number changed.
- Go to the Workflow tab.
- Click Edit.
- Add or edit the Internal Control Number field.
- Click Save.
EDI Loop/Segment
Loop 2300, Segment REF/F8/02
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