FAQ – PTA & OTA Modifiers

This PTA & OTA modifiers FAQ from Gawenda Seminars & Consulting explains the newly required CQ (for physical therapist assistant) and CO (for occupational therapy assistant) modifiers for outpatient therapy services. It covers when and how these modifiers must be appended to CPT codes (when services are performed in whole or in part by a PTA or OTA), how the modifiers interact with existing discipline modifiers (GO/GP), their application in different settings (outpatient, inpatient, critical access), and whether they affect payment. Use this FAQ to understand how the PTA & OTA modifiers integrate into therapy billing compliance.

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This article is not intended to and does not serve as legal advice or as consultative services, but is for general information purposes only.