CPT® Code 68810

Probing of the nasolacrimal duct (NLD) is a medical procedure designated by CPT® Code 68810, which involves the insertion of a probe into the nasolacrimal duct, also known as the tear duct. This procedure can be performed with or without the use of irrigation. The primary purpose of probing is to address obstructions within the nasolacrimal duct, which can occur congenitally in children or, less frequently, as an acquired condition in adults. Congenital nasolacrimal duct obstruction is characterized by the failure of the duct to open properly into the nasal cavity, often leading to excessive tearing and potential infection. While many congenital obstructions resolve on their own by the age of 12 months, those that persist may require intervention. During the procedure, the puncta, which are the small openings in the eyelids that drain tears, are dilated to facilitate the passage of the probe. The probe is carefully inserted and navigated through the duct until it reaches the nasal cavity or can be touched by a second probe introduced through the nasal punctum. Following the probing, the duct may be irrigated with a saline solution, sometimes containing fluorescein dye, to clear any debris or obstructions. This procedure is essential for restoring normal tear drainage and alleviating symptoms associated with nasolacrimal duct obstruction.