When should the modifier “-50” be used in CPT coding?

The modifier “-50” is specifically used in CPT coding to indicate that a bilateral procedure is performed on both sides of the body. This modifier allows coders to report the performance of the same procedure on both sides of a bilateral anatomical site within a single code, thereby simplifying the coding process and reflecting the service accurately in the claim.

When using modifier “-50,” it’s essential to note that it applies strictly to procedures performed bilaterally and acknowledges both sides without needing to list the procedure twice. This is particularly important for specific surgeries or examinations that naturally apply to paired organs or limbs, such as knees, breasts, and eyes, among others.

The other options do not align with the intended use of modifier “-50.” For example, multiple sessions or diagnoses do not pertain to bilateral procedures which is the modifier’s purpose. Similarly, the location of the service, such as whether it is provided in a hospital or other facility, does not determine the use of this modifier, as it strictly relates to bilateral procedures performed on the body.