Ophthalmology and Optometry Coding Alert

Question: I need some help with CPT® code 68840. Is this billed bilaterally, with modifiers RT and LT, or should I code it for the upper lid and lower lid of the same eye?Washington SubscriberAnswer: If the ophthalmologist probed both eyes, then yes, you would bill bilaterally with 68840-50 (Probing of lacrimal canaliculi, with or without irrigation; bilateral procedure) for Medicare, and 68840-RT (... right side) and 68840-50-LT (... bilateral procedure; left side) for private payers. Be advised, though, that those carriers with Local Coverage Determinations (formally LMRPs) state that if the indications to perform the procedure on both eyes are not clearly documented, they may reduce coverage to a unilateral payment.The payment for 68840 is allowed per eye, not per lid, so you will not be able to use the eyelid modifiers -- E1 (Upper left, eyelid), E2 (Lower left, eyelid), E3 (Upper right, eyelid) or E4 (Lower right, eyelid) -- [...]