The 8-Minute Rule is a Medicare billing guideline used to determine how many units of time-based services—such as physical therapy, occupational therapy, or certain mental health treatments—can be billed. According to this rule, a provider must spend at least 8 minutes performing a single, billable service to bill for one unit. The total face-to-face, direct service time is calculated... https://mandmclaimscare.com/blog/physical-therapy-billing-and-8-minute-rule/