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:
- OASIS-E Manual (PDF)
- OASIS-E Instruments (ZIP)
- CMS OASIS User Manuals webpage
- CMS OASIS Data Sets webpage
- Draft OASIS E1 All Items Instrument (PDF) effective January 2025
The Division of Quality Assurance (DQA) sponsors a quarterly forum to educate HHAs. Find recordings, agendas, and slide presentations from previous forums:
Learn more about OASIS with CMS (Centers for Medicare & Medicaid Services) training resources:
- 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.
- April 2024
- March 2024
- No updates to report
- February 2024
- January 2024
- No updates to report
- December 2023
- November 2023
- October 2023
- No updates to report
- September 2023
Find helpful resources to support submissions, corrections, and account information under OASIS.
OASIS submission
The OASIS data transmission requirement applies to Medicare and Medicaid patients receiving skilled care only. HHAs may continue to collect OASIS data for non-Medicare and non-Medicaid patients for their own use, but they may not submit this data to the state.
Review these sources to find more information:
- State Operations Manual Chapter 2, 2202.3C - Non-Medicare/Non-Medicaid Patients (PDF)
- CMS OASIS Q&As: Category 1 - Applicability (PDF)
- Title 42 CFR § 484.45 Condition of Participation: Reporting OASIS Information
- Title 42 CFR § 484.55 Condition of Participation: Comprehensive Assessment of Patients
OASIS correction policy
The Home Health OASIS Submission/Correction Policy (PDF) fact sheet contains information about policy changes.
See Correction policy for HHA, S&C 01-12 (PDF).
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.
- Advance Beneficiary Notice of Noncoverage (ABN)
- Beneficiary Notices Initiative (BNI)
- CMS Medicare Learning Network - Denial of Home Health Payments (CR 9585, MLN SE 17009) (PDF)
- Home Health Patient-Driven Groupings Model (PDGM)
- Home Health Prospective Payment System (PPS)
- International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)
- Medicare Benefit Policy Manual Chapter 7 - Home Health Services (PDF)
- Medicare Benefit Policy Manual Chapter 10 - Ambulance Services (PDF)
- National Government Services (NGS) - Medicare claims and rules
Additional resources
Find more information on OASIS from CMS and elsewhere, including answers to FAQs (frequently asked questions).
- CMS 19-07 - HHA FAQs (PDF) provides interpretive guidance on State Operations Manual, Appendix B (PDF)
- DQA Email Subscription Service (Listserv)
- Home Health Agency Center
- Home Health Care Survey on Consumer Assessment of Healthcare Providers and Systems (CAHPS)
- MetaStar-Wisconsin's Quality Improvement Organization
- LeadingAge
- Policy & Memos to States and Regions (Survey & Certification Memos)
- State Operations Manual, Chapter 2: The Certification Process (PDF)
- Resources and links from OASIS Answers
Contact us
For questions about interpretation or intended use, contact Heather Newton, OASIS education coordinator:
- Email heathera.newton@dhs.wisconsin.gov.
- Call 920-360-6102.
For technical or automation questions, contact Emily Virnig, OASIS automation coordinator:
- Email emily.virnig@dhs.wisconsin.gov.
- Call 608-266-1718.
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.