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Home Health Agencies: Information on the Outcome and Assessment Information Set (OASIS)

Find resources and details on the Outcome and Assessment Information Set (OASIS). This information must be collected for adult Medicare and Medicaid patients receiving skilled services. It doesn't apply to patients receiving services for pre- or postnatal conditions.

Note: Patients receiving only personal care, homemaker, and chore services are excluded since those are not skilled services.

Learn about OASIS from CMS (Centers for Medicare & Medicaid Services):

There are some minor changes to the manual and data set that will go into effect on April 1, 2026. Please see below for the most current information:

Learn more about OASIS with CMS (Centers for Medicare & Medicaid Services) training resources:

  • CMS Home Health Quality Reporting Training topics, such as:
    • Achieving a Full Annual Payment Update.
    • Section M: Skin Conditions-Assessment and Coding of Pressure Ulcers/Injuries.
    • Section N: Medications-Drug Regimen Review.
    • Section GG.

Check out the CMS YouTube Channel.

View information from CMS with timely updates on OASIS and related topics.

Find helpful CMS resources to support submissions, corrections, and account information under OASIS.

OASIS submission

Effective July 1, 2025, OASIS data collection and submission are required for patients with any pay source who are not exempt from OASIS data collection, and who begin receiving home health care services with an OASIS SOC M0090 data on or after July 1, 2025. The requirement includes the SOC OASIS and any subsequent OASIS time point assessments relevant to the patient’s home health stay (that is, resumption of care, recertification, other follow-up, transfer, discharge, and death at home). Patients under the age of 18, patients receiving maternity services, and patients receiving only personal care, housekeeping and/or chore services continue to be excluded from OASIS data collection and submission requirements.

Review these sources to find more information:

OASIS correction policy

Refer to chapter 2 of the OASIS manual for OASIS corrections.

Quality Improvement and Evaluation System (QIES) technical support

Find technical guidance such as references and manuals, software tools, and training materials on the QIES Technical Support Office (QTSO) website. See the QTSO HHA Providers page or iQIES Software page for more details.

CMS user account registration

Use these resources for help registering your account.

Find information and resources from CMS on quality improvement.

Find more resources on Medicare payments.

Additional resources

Find more information on OASIS from CMS and elsewhere, including answers to FAQs (frequently asked questions).

Contact us

Questions? Email dhsdqamdsoasis@dhs.wisconsin.gov.

  • Heather Newton, OASIS education coordinator, can answer questions about interpretation or intended use.
  • Emily Virnig, OASIS automation coordinator, can answer technical or automation questions.

Patient names and other protected health information (PHI) should only be sent to individuals authorized to receive that information, so care must be taken to ensure the email is addressed correctly. Sending an email containing PHI to an incorrect recipient would be an unauthorized disclosure and a violation of HIPAA. We strongly recommend that you do not include PHI in an email. You may include the resident or assessment identification number.

Note: Patients receiving only personal care, homemaker, and chore services are excluded since those are not skilled services.

Glossary

 
Last revised March 3, 2026