MedicaidBilling CodesHigh impact
Fee-For-Service Outpatient Therapy Assistant Billing
Kentucky Medicaid·KY · Physical Therapy, Occupational Therapy·Coding
Effective date
Jun 1, 2022
We identified it
Jun 20, 2026
Summary
Kentucky Medicaid is replacing modifier U1 with new modifiers CO and CQ for outpatient therapy assistant billing. CO modifier must be used for occupational therapy assistant services and CQ modifier for physical therapist assistant services.
Action Required
By June 1, 2022: Billing team must update billing system to use CO modifier (instead of U1) when billing for occupational therapy assistant services and CQ modifier (instead of U1) when billing for physical therapist assistant services. Update all encounter forms and billing templates to reflect these new modifier requirements for Kentucky Medicaid Fee-For-Service claims.