OASIS Manual · For admins & DONs
Submitting OASIS to iQIES
How OASIS-E2 records get submitted to iQIES, the validation report and error codes that come back, and what to do when iQIES rejects a record.
CMS source
OASIS-E2 Data Specifications · Verified 2026-10-16
TL;DR
- iQIES is the CMS system every OASIS record goes to. The manual's glossary says it replaces the legacy QIES, CASPER and ASPEN systems, so your submission reports live in iQIES now.
- Each record is its own XML file built to the OASIS-E2 data specifications. Several files go up together in one zip, and iQIES accepts nothing but zip files. Most agencies let the EHR build and send them.
- The Final Validation Report comes back within 24 hours of a successful upload. Fatal errors reject the record. Warnings don't, but CMS wants each one reviewed.
What is iQIES?
All HHA users are expected to submit required OASIS records to CMS via the internet Quality Improvement and Evaluation System (iQIES).
The manual's glossary (Appendix A, p. 260) describes iQIES as the system that "replaces QIES, CASPER and ASPEN legacy systems. The system is used by providers and vendors to submit OASIS data."
Preparing the submission file
As noted above, OASIS data is now submitted using XML files. [...] Only a single assessment may be included in a submission file. If a facility wishes to submit data for multiple assessments during an upload session, separate files must be created for each assessment. These separate files should be zipped together into a single zip file which can then be uploaded. The iQIES system processes only zip files. Any submitted file that is not a zip file will be rejected. All submission files must be 5 MB or less in size.
The validation report
An OASIS Provider Final Validation Report is automatically generated within 24 hours of successful submission of a file. A file may include one or more records. The Report details the errors, if any, in the submitted records within the file. Go to the Reports section in iQIES to view this report. Each error is noted on the report by its numeric identifier and severity (Fatal or Warning). The report also includes a brief description of the error and notes the submitted item values that triggered the error.
Validation errors and rejection codes
Fatal. Violation of a fatal edit will result in rejection of the submission file. Format and skip pattern edits are always fatal. Most consistency edits are fatal, but some are warnings. Warning. Violation of a warning edit will result in a warning message on the user feedback report. However, a warning will not prevent the submitted assessment data from being accepted and stored in the iQIES system. [...] The fifth section of the report is a Supplemental Information table. This table appears for some items. It contains a list of one or more informative messages that provide background information or additional instructions that are related to the item. These messages are not issued by the iQIES system.
What to do when a record is rejected
Records with fatal errors will be rejected. All fatal errors in a record must be corrected and resubmitted. All warning errors should be reviewed and corrected if appropriate, to ensure the data uploaded is accurate and complete.
Common errors
Related
- QA Workflow and Corrections — fix errors before they become rejections
- M0090, Completion Windows, and Transmission Deadlines — the deadlines submission must meet