KX Modifier

The KX modifier is required on Medicare claims when therapy charges exceed the annual threshold ($2,330 for PT/SLP combined in 2024). By applying KX, the therapist attests that continued treatment is medically necessary and that supporting documentation exists in the medical record. Failure to apply KX when required results in automatic claim denial. PRACTIS automatically tracks therapy cap thresholds and applies the KX modifier when appropriate, preventing missed revenue.