Developers Resources

XML Developer Links

2019 XML Schema updates:

Due to the transition to ePreop data warehousing services in July, no XML schema changes will be announced until April 2019. Between Jan 1, 2019 and April 2019, please continue to use the 2018 XML format. In April 2019 AQI plans to extend the XML format to include additional optional fields. We anticipate these changes will not affect most and will only require a change in version number from 2018 to 2019. The XML schema will be extended to accommodate additional values, pending additions to the NACOR Data Definitions and may include terms for the Society for Ambulatory Anesthesia (SAMBA), the American Society of Dentist Anesthesiologists (ASDA) and ePreop's Anesthesia Valet.

From Jan 1, 2019 through July 1, 2019, data submissions may use the 2018 XML format for reporting 2019 MIPS and QCDR measures. After the 2019 XML changes have been released in April, AQI will accept either the 2018 or 2019 format until July 1, 2019 after which the 2019 version will only be accepted. Please watch for the NACOR News Newsletter and this page for up-to-date information.

2018-01-01 XML Schema updates:

AQI has made modifications to improve the NACOR XML schema for 2018. The changes will allow reporting of a few retired measures that practices wish to track internally, but not send to CMS. AQI has designated those retired measures as Internal Improvement Measures (IIM) and will provide a measure specification booklet in 2nd quarter 2018 to list which measures will be supported.

In 2017, the Committee on Data Definitions focused on defining several comorbidities. It was decided to report those via ICD codes supplemented by registry codes in the PreOpICD node set. To that end, the XML Schema has been updated to permit registry codes with ICD codes.

AQI also has recognized some errors practices receive when submitting files, including sections that were out of order according to the schema. AQI has relaxed some requirements pertaining to the order in which sections of data are listed for each Anesthesia Record.

AQI intends to require all schema changes be made by April 1, 2018. Data may be submitted using either format for the first quarter of 2018 for either 2017 or 2018 data. For more information, email

XML File Validator vs. NACOR XML Schema 2018

Select a file to upload (4 MB size limit) or paste your XML in the text box below. Click the 'Validate' button to verify that the XML conforms to the NACOR schema.

2018 NACOR XML sample - all data elements (opened in your browser in readable format)

Click on the following links to view sample XML files

By uploading your file, you attest data provided does not represent real patient data. All data submissions through this validator must use fake data.
Test your own sample file here:

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