How Do I Calculate The Size of An Adjacent Tissue Transfer Code

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Question:
I am inquiring how to calculate the size of a wound to determine which adjacent tissue transfer code I should be reported. The surgeon excised a dematofibrosarcoma protuberans of chest that resulted in a primary and secondary defect documented as a 16.5 x 7. The secondary defect was closed primarily. My surgeon says the size of the defect is 115.5 sq cm and I am saying the wound size is 23.5 sq cm. Who is right?

Answer:
Your physician is right. To report adjacent tissue transfers, the wound size is based on square centimeters (sq cm). To determine the total size of the wound defect, the defect size is determined by first multiplying the length times the width of the primary and secondary defects and adding both of them to determine the total defect size when the secondary defect is closed primarily as noted. Report CPT 14301 for the first 60 square centimeters (sq cm), add-on code 14302 for the next 30 sq cm and +14302-59 for the remaining 25.5 sq cm. Alternatively, you may report 14301 and 14302 x 2 units if you know that the payor will recognize more than 1 in the units box and reimburse the appropriate amount.