Home Health Certification and OASIS Clock
Home health certification and assessment dates.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Start of care
- 2026-10-01
- Face-to-face encounter
- 2026-09-20
- Referral date
- 2026-09-29
Result: The face-to-face encounter on September 20, 2026 is within the window (July 3, 2026 to October 31, 2026). The first certification period runs October 1, 2026 to November 29, 2026, with the recertification assessment due November 25, 2026 to November 29, 2026.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Start of care (YYYY-MM-DD)
- Face-to-face encounter (YYYY-MM-DD)
- Referral date (YYYY-MM-DD)
How this is calculated
Citation
42 CFR 424.22: face-to-face encounter no more than 90 days before or within 30 days after the start of care; recertification at least every 60 days. 484.55: comprehensive assessment by 5 calendar days after the start of care, updated in the last 5 days of every 60. 484.205: 30-day periods. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.