Data Dictionary for CSV and JSON

The data dictionary provides an explanation of CSV columns and JSON field names.

The “EDI Element” column provides mapping to an X12 “Reference Designator.” E.g., CLM01 (patient control number) refers to the CLM segment and the element in the first position.

For example, in CLM*26463774*100***11:B:1*Y*A*Y*I~, “26463774” is the value of the CLM01 element.

Note that certain elements can be unused for many segments, so the numbering is not sequential.

In some instances, we also provide the qualifier code for the field, prefixed by *. For example, in the EDI string DTP*435*D8*20030108~, the code 435 signifies an admission date, so the admissionDate field has *435 next to the DTP02 element’s reference designator.

The combination of the reference designator and the qualifier code gives you an exact mapping to the element/segment definition in an X12 standard, where you can find additional details (requires a paid subscription).

Refer to our examples on the site to view element reference designators and qualifiers. Select “EDI View” and click on any segment name.