CPT code 68815 represents probing of the nasolacrimal duct with possible irrigation and insertion of a tube or stent to treat or evaluate obstruction. This ophthalmic procedure is used to diagnose strictures or obstructions in the tear drainage system and to restore or maintain tear outflow. Nationally, the code matters because it captures a commonly performed lacrimal procedure that impacts surgical utilization, ambulatory surgical center volumes, and ophthalmic specialty billing patterns. Key payers examined include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will gain a concise clinical and billing overview of CPT code 68815, including service context, typical sites of service, and common modifiers provided in the input. The publication summarizes benchmarking considerations, coding nuances relevant to ophthalmology and oculoplastics, and clinical context for when lacrimal probing with stent placement is performed. Data not available in the input is noted where applicable. The summary is intended for payers, coding professionals, and clinical leaders seeking a national-level brief on this specific lacrimal procedure code.