How do we bill timed and untimed therapy codes? If the service being provided does not fall under a timed code, it can only be billed as 1 unit.
Example 1 – HCPCS 97001 (PT Evaluation); even if the Initial Evaluation takes 30 minutes, only 1 unit may be billed and the time does not count towards total treatment time for timed codes. Example 2 – HCPCS 97032, electrical stimulation (manual), each 15 minutes is a timed code and application from 8 to 22 minutes would be counted as 1 unit. Counting Minutes for Timed Codes in 15 Minute Units When only one service is provided in a day, providers should not bill for services performed for less than 8 minutes. For any single timed CPT code in the same day measured in 15 minute units, providers bill a single 15-minute unit for treatment greater than or equal to 8 minutes through and including 22 minutes. If the duration of a single modality or procedure in a day is greater than or equal to 23 minutes through and including 37 minutes, then 2 units should be billed.
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