CPT® Code 68840

The procedure described by CPT® Code 68840 involves the probing of the lacrimal canaliculi, which are small mucosal ducts located at the inner corner of the eye. These ducts play a crucial role in the drainage of tears from the eye into the nasal cavity. Each eye contains two canaliculi: the superior canaliculus, associated with the upper eyelid, and the inferior canaliculus, linked to the lower eyelid. During this procedure, a local anesthetic is typically administered to ensure patient comfort. The punctum, which is the opening of the canaliculus, is then dilated to facilitate the insertion of a probe. This probe is carefully passed through the punctum into either the superior or inferior canaliculus, or both, depending on the clinical need. Once the canaliculi are accessed, they may be cannulated, which involves inserting a small tube to allow for the flushing of the ducts with an irrigation solution. This process can help clear any blockages or obstructions, ensuring proper tear drainage and alleviating symptoms associated with lacrimal duct dysfunction.