Inferior Dermal Flap

Question:

Is there a code for an inferior dermal flap in breast reconstruction?

Answer:

An inferior dermal flap may be reported using the Adjacent Tissue Transfer (ATT) code set (CPT 14xxx), provided the documentation supports.  According to CPT Assistant guidance, the adjacent tissue transfer codes should be used for a de-epithelialized autoderm flap, based solely on the transposed area.

However, according to Medicare’s National Correct Coding Initiative (NCCI) Policy Manual, adjacent tissue transfer or rearrangement is considered included in breast reconstruction procedures when performed as part of those services.

Excerpt from the NCCI Manual:

“Breast reconstruction procedures (CPT codes 19357–19369) include adjacent tissue transfer or rearrangement procedures (e.g., CPT codes 14000, 14001) if performed. An adjacent tissue transfer or rearrangement procedure may be reported on the same day as a breast reconstruction procedure only if it is performed at a different site unrelated to the breast reconstruction.”

Key Point: According to Medicare guidelines, ATT codes are not separately reportable when performed as part of breast reconstruction, as outlined in the NCCI Manual, Chapter III. If you apply these guidelines universally to all payors, the ATT code would not be reported.

*This response is based on the best information available as of 08/20/26.