14000 and 19301 for Partial Mastectomy?

Question:

Should cpt code 14000 ADJACENT TISSUE TRANSFER OR REARRANGEMENT, TRUNK; DEFECT 10 SQ CM be billed with cpt code 19301 MASTECTOMY; PARTIAL? Insurances tend to disallow it stating it is included in 19301. This is how our surgeon describes 14000, a parenchymal flap advancement was used to close, there is minimal breast parenchyma left at the inferior margin. Advancing this into the lumpectomy cavity does create some distortion along the inframammary fold. Therefore, the breast tissue both above and below the lumpectomy cavity is released from the underlying chest wall. They form a well vascularized broad based pedicle. This is advanced into the lumpectomy cavity and secured together with interrupted 3-0 Vicryl sutures. Approximately 10 sq cm of tissue are mobilized in this fashion. Thank you for your help.

Answer:

No, 14000 ADJACENT TISSUE TRANSFER OR REARRANGEMENT, TRUNK; DEFECT 10 SQ CM is not reported with a partial mastectomy (lumpectomy) code 19301 for a local advancement flap, which is what is described in your question

Elimination of dead space is inherent to a mastectomy procedure. Local advancement flaps and oncoplastic repair are included in a mastectomy procedure.

*This response is based on the best information available as of 10/23/25.