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MLN Connects^® Newsletter Message

Interns and Residents Information System (IRIS) XML Format

Teaching providers: You must submit IRIS data for all interns and residents you claim on your cost reports. For cost reports with fiscal year beginning on or after:

• October 1, 2021: Use the IRIS XML format to file your data.
• October 1, 2022: Make sure the total graduate medical education and indirect medical education full time equivalents reported on the IRIS match the total reported on your as-filed cost report. Medicare Administrative Contractors (MACs) will reject the cost report if this information doesn’t match.

See the instruction to your MAC (PDF), which includes a list of software vendors who submitted sample XML IRIS files that meet the new file format requirements. You’re not required to use them.