Home Health Agencies (HHAs): OASIS Information

This webpage provides resources and information pertaining to the Outcome and Assessment Information Set (OASIS) that is required to be collected for Medicare and Medicaid patients, 19 years and older, receiving skilled services, with the exception of patients receiving services for pre- or postnatal conditions. Those receiving only personal care, homemaker, or chore services are excluded since these are not considered skilled services.

Wisconsin OASIS Contacts

  • OASIS Automation Coordinator
    Provides OASIS technical support
  • OASIS Education Coordinator
    Provides OASIS content guidance (interpretation and intended use)

General OASIS Information


Provider Education

OASIS Educational Forum

The Division of Quality Assurance (DQA) sponsors a quarterly educational forum to assist in keeping HHAs updated with evolving OASIS information and to provide an avenue for HHA staff to ask OASIS-related questions. The forum is hosted jointly by DQA's OASIS Education and Automation Coordinators.

Attend the OASIS Educational Forum
  • Join Zoom forum (select this link to go straight to the room without needing to enter the meeting ID and password)
    • Meeting ID: 161-306-5344
    • Passcode: 551756
  • Join by Phone: 551-285-1373
    • Enter 1613065344 # when asked for the meeting ID
    • Enter 551756 # if asked for passcode
    • Enter # if asked for participant ID
Previous Forums


Technical Resources

OASIS Submission

The transmission requirement for OASIS data currently applies to Medicare and Medicaid patients receiving skilled care only. While HHAs are not required to collect OASIS for non-Medicare/non-Medicaid patients, HHAs may continue to collect OASIS data for their own use but they may not submit the data for these patients to the state. The state system will reject any assessment with a M0150 value of '0' (unchecked) for items 1, 2, 3 and 4.

CMS recently enhanced the system HHAs use to submit OASIS data. The new data system no longer supports the use of test data. Please review Federal Register Volume 85, No. 214 for additional information.

Sources and more information can be found by reviewing:

OASIS Correction Policy

The Home Health OASIS Submission/Correction Policy fact sheet contains information about the policy change effective January 1, 2020.

QIES Technical Support Office (QTSO) Submission Information and User's Guide

Providers, vendors, state agency and regional office personnel, and other organizations performing Survey & Certification functions will find technical guidance such as references & manuals, software tools, and training materials on the QIES Technical Support Office (QTSO) website.

CMS User Account Registration

Quality Improvement

Payment Information

Additional Resources

Last Revised: March 24, 2022