What does the “–51” modifier signify when added to a CPT code?

The “–51” modifier is used to indicate that multiple procedures were performed during the same surgical session. When appended to a CPT code, it communicates to insurers that while multiple distinct procedures were conducted, one of them is primary and the others are secondary. This modifier helps to prevent reduction in reimbursement for the second and subsequent procedures performed in the same session.

In surgical coding, it’s important to accurately represent the services provided to ensure proper billing and payment. The use of the “–51” modifier allows coders to appropriately document situations where more than one procedure is performed, offering a clearer picture of the surgical efforts and avoiding confusion over payment for each service.