What is the code for an Open caldwell-luc procedure of maxillary sinuses?

The Open Caldwell-Luc procedure for maxillary sinuses is typically coded using the Current Procedural Terminology (CPT) code 31276, which refers to "Sinusotomy, maxillary, with or without drainage." This procedure involves creating an opening in the maxillary sinus to allow for drainage and treatment of conditions like chronic sinusitis. It's important to refer to the latest coding guidelines or consult with a medical coder for the most accurate and specific coding.