A patient has a palpable lump in the left breast and undergoes a procedure described as "Biopsy of mass of left breast." What is the appropriate CPT code?

• A. 19100
• B. 19120
• C. 19125
• D. 19130

Answer: (B)

The procedure described as "Biopsy of mass of left breast" generally refers to a percutaneous needle biopsy, which specifically involves the aspiration or excision of breast tissue for diagnostic purposes. In the context of the Current Procedural Terminology (CPT) coding system, the correct code for a percutaneous needle biopsy of a breast mass is indeed 19120.

This code specifically indicates that a biopsy was performed with the use of imaging guidance, which is common practice to ensure accuracy in targeting the mass. The details provided in the question suggest that a biopsy was conducted rather than other procedures related to breast masses, such as excision or more extensive surgeries.

Thus, the choice of code reflects both the nature of the procedure and the specific locality of the biopsy performed.