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Time units are calculated based on rounding accumulated hours of service for the month to the nearest tenth of an hour.
The following chart illustrates the rules of rounding and gives the appropriate billing unit:
| Accumulated Time (in Minutes) | Unit(s) Billed |
|---|---|
| 1 - 6 | .1 |
| 7 - 12 | .2 |
| 13 - 18 | .3 |
| 19 - 24 | .4 |
| 25 - 30 | .5 |
| 31 - 36 | .6 |
| 37 - 42 | .7 |
| 43 - 48 | .8 |
| 49 - 54 | .9 |
| 55 - 60 | 1.0 |
| etc. |
A unit of service (1.0) for ongoing care coordination and monitoring services (W7092) is one hour. Use the chart above to determine the appropriate unit when billing for a fraction of an hour. For example, bill 1.8 units to represent 1 hour and 48 minutes of ongoing care coordination services.
Do not use these guidelines when billing for procedure codes W7090 (risk assessment) or W7091 (care plan development). Always enter "1.0" unit for these procedure codes. Wisconsin Medicaid does not reimburse these procedure codes by the hour.