Muscle, myocutaneous or skin flap, where clinically indicated to repair one surgical excision made in the removal of a malignant or non-malignant skin lesion (only in association with items 31000, 31001, 31002, 31003, 31004, 31005, 31358, 31359, 31360, 31363, 31364, 31369, 31370, 31371, 31373, 31376, 31378, 31380 or 31383)-may be claimed only once per defect (Anaes.)