HCPCS Modifier GN

• Submit HCPCS modifier GN to indicate that the services were delivered under an outpatient speech language pathology plan of care
• If additional modifiers are required with the service, HCPCS modifier GN must be submitted in the first or second modifier position

References

• Requirements for therapy plans of care: CMS Pub. 100-02, Chapter 15, Section 220 (PDF, 1.29 MB)
• CMS Therapy Services web page