G-Codes and Severity Modifiers for Claims-Based Outcomes Reporting

G-Codes and Severity Modifiers for Claims-Based Outcomes ReportingCMS established non-payable G-codes for outcomes reporting on claims for Medicare Part B beneficiaries receiving therapy services. Each non-payable G-code listed on the claim form must be accompanied with a severity/complexity modifier. The modifier represents the functional impairment on a 7-point severity/complexity scale. The G-codes and modifiers are listed here for speech-language pathology services.