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CPT Modifier · Therapy

Modifier GO

Services delivered under an outpatient occupational therapy plan of care

✅ When to Use Modifier GO

Services delivered under an outpatient occupational therapy plan of care

⛔ When NOT to Use Modifier GO

Do not use for PT (use GP)

Modifier GO FAQ

What does modifier GO mean? +

Services delivered under an outpatient occupational therapy plan of care

When should I use modifier GO? +

Services delivered under an outpatient occupational therapy plan of care

When should I NOT use modifier GO? +

Do not use for PT (use GP)

What documentation is required for modifier GO? +

Complete chart documentation supporting the modifier's clinical or billing rationale.

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Reviewed by the PayerReady Medical Coding Team

Verified against the CMS 2026 code set on July 16, 2026.

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