Revisiting Breast Reduction Insurance Coverage: How the Schnur Scale Discriminates against Women Based on Body Habitus.

Abstract

The Schnur scale used body surface area (BSA) to determine the amount of breast tissue resection in reduction mammaplasty, resulting in a greater requirement of breast weight removal in patients with larger BSA. The authors aimed to demonstrate BSA variance among women with similar mastectomy weights and the range of mastectomy weights among women with comparable BSAs. A retrospective chart review of patients who underwent mastectomy from October of 2021 to June of 2022 was performed. Patients were included if they underwent skin-sparing or nipple-sparing mastectomy with a minimum specimen weight of 700 g. Patient's BSA, body mass index (BMI), mastectomy weight, and Schnur weight requirement (SWR) were collected. A total of 130 patients (194 breasts) were included. There was significant variance in mean BSA, BMI, SWR, and SWR-to-mastectomy weight ratio among women with similar mastectomy weights. BSA varied by as much as 0.82 units, BMI varied by as much as 32 kg/m 2 , and SWR varied by as much as 1365 g within the same mastectomy weight group. There was also significant variance in mastectomy weights among women with comparable BSA, especially in BSA groups greater than 2.20, with the greatest range in mastectomy weights being 1684 g. Analysis of mastectomy patients showed no predictable relationship between BSA and breast weight. There was significant variance in the BSA of patients with similar breast weights, and conversely in breast weights of patients with comparable BSA. Therefore, strict adherence to the Schnur weight requirement can prevent patients with macromastia from receiving breast reductions.