Run up to 4 patient timers simultaneously. Billable units update live using the CMS 8-Minute Rule. State is
saved automatically.
units = ⌊min ÷ 15⌋ + (min % 15 ≥ 8 ? 1 : 0)
8-Minute Rule Quick Reference
0–7 min
0 units
8–22 min
1 unit
23–37 min
2 units
38–52 min
3 units
53–67 min
4 units
68–82 min
5 units
Audio chimes fire at the 8-minute threshold and each new billable unit boundary. Browser must not be
muted. First interaction with a Start button activates the audio context.