Missouri Subscriber
Answer: Code 69450 (tympanolysis, transcanal) would apply in this case. Coders Desk Reference notes that the otolaryngologist treats a lesion or other irritation to the tympanic membrane. Using an operating microscope, adhesions (or scar tissue, in this case) are removed from the surface of the eardrum.
Note: Although 69450 involves use of a microscope, 69990 (microsurgical techniques, requiring use of operating microscope [list separately in addition to code for primary procedure]) should not be reported separately, as it is bundled with 69450 in the Correct Coding Initiative. The edit has a 0 indicator, which means it cannot be bypassed.