(C) Establishment of incident to modifier for mental health services furnished through telehealth Not later than 2 years after the date of the enactment of this subparagraph, the Secretary shall establish requirements to include a code or modifier, as determined appropriate by the Secretary, on claims for mental health services furnished through telehealth under this paragraph that are furnished by auxiliary personnel (as defined in section 410.26(a)(1) of title 42, Code of Federal Regulations, or any successor regulation) and billed incident to a physician or practitioner's professional services. . 106. Guidance on furnishing behavioral health services via telehealth to individuals with limited English proficiency under Medicare program Not later than 1 year after the date of the enactment of this section, the Secretary of Health and Human Services shall issue and disseminate, or update and revise as applicable, guidance on the following: (1) Best practices for providers to work with interpreters to furnish behavioral health services via video-based and audio-only telehealth, when video-based telehealth is not an option. (2) Best practices on integrating the use of video platforms that enable multi-person video calls into behavioral health services furnished via telehealth. (3) Best practices on teaching patients, especially those with limited English proficiency, to use video-based telehealth platforms. (4) Best practices for providing patient materials, communications, and instructions in multiple languages, including text message appointment reminders and prescription information. 107. Ensuring timely communication regarding telehealth and interstate licensure requirements The Secretary of Health and Human Services shall provide information— (1) on licensure requirements for furnishing telehealth services under titles XVIII and XIX of the Social Security Act ( 42 U.S.C. 1395 et seq.