Therapy Units (8-Minute Rule vs Rule of Eights)
Timed-therapy billable units from cumulative minutes under the Medicare 8-minute rule or the AMA/SPM substantial-portion rule.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Timed-code rule
- Medicare 8-minute rule (cumulative total)
- Total timed treatment minutes
- 50
Result: 50 cumulative timed minutes is 3 units under the Medicare 8-minute rule.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Total timed treatment minutes
- Timed-code rule: medicare (8-minute) or rule-of-eights (per service)
How this is calculated
CMS Pub. 100-04 Ch. 5 20.2 and 42 CFR 410: the Medicare 8-minute rule for timed therapy codes (8-22 = 1 unit, 23-37 = 2, 38-52 = 3, 53-67 = 4, each +15 adds a unit), on cumulative minutes; contrasted with the AMA Rule of Eights, applied per service. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
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