Unit.
Six minutes — a tenth of an hour — the increment time-based workers’-comp work is billed in. The word does two different jobs in two different states, and that is where the errors come from.
Six minutes. But read the schedule carefully.
Time-based vocational and case-management work is billed in tenths of an hour. Six minutes is 0.1. Twelve minutes is 0.2. Half an hour is 0.5.
What the schedule figure means is not consistent between states:
Current as of July 2026 — verify with Ohio BWC and Washington L&I.
Box 24G counts tenths. Except when it counts things.
On a CMS-1500, a six-minute activity prints as a 1 in box 24G, not as 0.1. Thirty minutes is a 5. A full hour is a 10.
Count-based codes are not multiplied. Twenty-three miles of mileage is 23 in box 24G, never 230. Time × 10; counts as themselves.
Mixing those two rules up is the most common self-inflicted underpayment in Ohio voc rehab, and it is invisible until the EOR comes back light. If you bill in two states, check which meaning of “unit” each schedule is using before you copy an arithmetic habit across a border.
Related pages.
The arithmetic is worked out line by line on the Ohio W-code reference, and the daily activity grid is what doing it thirty times a day without doing it yourself looks like.
See your own week run itself.
We load your state’s codes before the call, so you are looking at a caseload like yours inside the first two minutes — not a slide deck.