4. When the reporting of an E/M service with modifier –25 is appropriate (that is, the documentation of the service meets the requirements of the specific E/M service code), it is not necessary that the diagnosis code for which the E/M service was rendered be different than the diagnos...
(whether the service was continuous or not) beyond the typical/average time of the visit code billed, to determine whether prolonged services can be billed and to determine the prolonged services codes that are allowable. You cannot bill as prolonged services: In the office setting, time spent ...