Therapy Modifier

Modifier	Description
CO	Outpatient physical therapy services furnished in whole or in part by a occupational therapist assistant.
GO	Service delivered personally by an occupational therapist or under an outpatient occupational therapy plan of care.
CQ	Outpatient physical therapy services furnished in whole or in part by a physical therapist assistant.
GP	Service delivered personally by a physical therapist or under an outpatient physical therapy plan of care
GN	Service delivered personally by a speech-language pathologist or under an outpatient speech-language pathology plan of care
KX	Requirements specified in the medical policy have been met