Size of lesion vs Size of Incision
The size of the lesion is NOT the same as the size of the incision. In most cases the incision is quite a bit longer than the lesion itself.
The physician MUST dictate the size of the lesion itself, as well as the depth.
If the lesion was limited to the epidermis, use codes from the Integumentary section (depends on whether benign or malignant).
If it is a soft tumor of the back or flank look at CPT code range 21930-21936.
If you are coding from the integumentary system, and the resultant operative wound required layered or complex closure you can code the closure separately (here is where the size of the incision comes in).
If you are coding from the musculoskeletal section, closure is included in the procedure.
In general, for an accurate response to your surgical coding questions, please post the scrubbed operative/procedure note.
Hope that helps.
F Tessa Bartels, CPC, CEMC