G9400Documentation of medical or patient reason(s) for not discussing treatment options; medical reasons: patient is not a candidate for treatment due to advanced physical or mental health comorbidity (including active substance use); currently receiving antiviral treatment; successful antiviral treatment (with sustained virologic response) prior to reporting period; other documented medical reasons; patient reasons: patient unable or unwilling to participate in the discussion or other patient reasons

G9400 is an HCPCS Level II code in the G series (procedures and professional services (temporary)), describing documentation of medical or patient reason(s) for not discussing treatment options; medical reasons: patient is not a candidate for treatment due to advanced physical or mental health comorbidity (including active substance use); currently receiving antiviral treatment; successful antiviral treatment (with sustained virologic response) prior to reporting period; other documented medical reasons; patient reasons: patient unable or unwilling to participate in the discussion or other patient reasons.

It was added to HCPCS effective 01/01/2015, and its current record took effect 01/01/2022.

It was terminated on 12/31/2021 and can't be billed for later dates of service.

Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.