When a malignant lesion is excised and the resultant skin defected closed with Z-plasty what coeed(s) should be reported?

When a malignant lesion is excised and the resultant skin defect is closed with Z-plasty, the correct code(s) to report are:

1. CPT code 11642: This code represents the surgical excision, repair, or reconstruction of a malignant neoplasm of the skin and subcutaneous tissue. It includes the removal of the tumor and the closure of the resulting skin defect.

2. CPT code 12031: This code is specifically used for Z-plasty. It involves the transposition of two triangular flaps of skin to lengthen a shortened area or to redistribute skin tension. In the case of a malignant lesion excision, Z-plasty may be used to close the skin defect in a way that minimizes tension and reduces the risk of recurrence.

It's important to note that the specific codes to be used may vary depending on the location, size, and complexity of the malignant lesion, as well as the specific Z-plasty technique employed. Therefore, it's always best to consult the current CPT codebook and guidelines to ensure accurate coding.