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Medical Billing & RCM

What are the most common telehealth modifiers used in CPT coding?

Reviewed by TherapyVertex Editorial Team • Updated November 12, 2026 • ≤ 250-Word Verified Brief
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Understanding the correct telehealth modifiers is crucial for accurate CPT coding and reducing the risk of insurance claim denials. The most commonly used telehealth modifiers include:

  • 95 - Indicates that the service was delivered via a real-time audio and video telecommunications system.
  • GT - Used primarily in older billing systems to signify that the service was provided via telecommunication.
  • CS - Signifies that the service was related to COVID-19.

When using these modifiers, ensure to include specific details in your claims to provide transparency and comply with coding guidelines. For more tailored assistance, consider consulting with licensed behavioral health specialists at Little Otter. They can provide insights into navigating medical billing complexities.

It's also essential to follow privacy rules as outlined by the U.S. Department of Health and Human Services (HHS) HIPAA telehealth privacy rules to maintain compliance.

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