Question: South Dakota Subscriber Answer: The Medicare Claims Processing Manual, Chapter 32, Section 12.1, says, "Contractors shall allow payment for a medically necessary E/M service on the same day as the smoking and tobacco-use cessation counseling service when it is clinically appropriate." (www.cms.hhs.gov/manuals/downloads/clm104c32.pdf). The manual then goes on to say that you should append modifier 25 to the E/M to show it's separate from G0375 and G0376 (Smoking and tobacco use cessation counseling visit ...), which were the previous codes for the service. Although this paragraph still references the old codes, the descriptors for the old and new codes are the same, and experts assert the guidance should still apply. Caution: