text: Colonoscopy -the transverse colon | Medical Billing and Coding Forum - AAPC
  I have a case where there was a biopsy and polyp removal from the transverse colon. Are we still able to bill 45385 & 45380-59 even though both procedures were in the same area of the colon?
  The following passage from the NCCI Manual will answer your question on when mod 59 is appropriate on the 48380.