Reimbursement Variation for General Dermatology Service by Commercial Insurers Supplemental Data

Individual CPTs -- Supplemental Tables 1-6. Supplemental Tables 1-6: Table footnotes. Displayed rates represent the calculated median and associated IQR across all dermatologist-payer-plan negotiated price points for the respective subgroup/service type and payer. Shown are summary statistics for six commonly performed dermtology services (CPT: 99203, 11900, 17110, 17000, 17261, 11104). National Provider Identification numbers were linked to the National File to determine dermatologist practice setting and location; practice setting/location for a small number of providers could not be identified and therefore the number of negotiated rates for each subgroup may not sum to overall totals. Rurality was determined through 2023 RUCC codes. Significance of differences in distributions across subgroups are determined through a Kruskal-Wallis test, with P<0.05 indicating significance. CPT = Current Procedural Terminology; IQR = Interquartile Range; RUCC = Rural-Urban Continuum Codes; UHC = United Healthcare. ########################################################################################################################### Pooled CPTs -- Supplemental Table 7 and Supplemental Figure 1. Supplemental Table 7: Table footnotes. Aggregate values reflect the median of all negotiated price points across the included CPT codes within each subgroup, rather than CPT-specific estimates. Shown are summary statistics for assessed CPT codes, including: 99203 (new patient office visit), 99213 (established patient office visit), 11900 (intralesional injection), 17110 (benign Destruction), 17000 (premalignant destruction), 17261 (malignant destruction), 11102 (tangential biopsy), and 11104 (punch biopsy). National Provider Identification numbers were linked to the National File to determine dermatologist practice setting and location; practice setting/location for a small number of providers could not be identified and therefore the number of negotiated rates for each subgroup may not sum to overall totals. Rurality was determined through 2023 RUCC codes. Medicare national payment rates include non- facility rates as determined through the 2024B Physician Fee Schedule. Significance of differences in distributions across subgroups are determined through a Kruskal-Wallis test, with P<0.05 indicating significance. CPT = Current Procedural Terminology; IQR = Interquartile Range; RUCC = Rural-Urban Continuum Codes; UHC = United Healthcare. Supplemental Figure 1: Distribution of reimbursement rates by insurer and CPT code. Each group of boxplots represents the variation in reimbursement rates across CPT codes and insurers. The additional “All” category summarizes the combined data. The figure demonstrates the distribution of reimbursement ranges in the eight common dermatology CPT codes.单个当前操作术语代码（Current Procedural Terminology, CPT）——附表1至6。 附表1至6： 表注：展示的费率为各亚组/服务类型与对应付款方下，所有皮肤科医生-付款方计划协商价格点的计算中位数及相应四分位距（Interquartile Range, IQR）。本次纳入6项常见皮肤科诊疗服务（CPT代码：99203、11900、17110、17000、17261、11104）的汇总统计数据。通过将国家执业医师识别号关联至国家数据库，以确定皮肤科医生的执业环境与执业地点；少数医师的执业环境及执业地点无法识别，因此各亚组的协商费率数量总和可能与总费率存在偏差。城乡分类通过2023年城乡连续统一代码（Rural-Urban Continuum Codes, RUCC）确定。亚组间分布差异的显著性通过Kruskal-Wallis检验进行判定，P<0.05即认为存在统计学显著性。 CPT=当前操作术语（Current Procedural Terminology）；IQR=四分位距（Interquartile Range）；RUCC=城乡连续统一代码（Rural-Urban Continuum Codes）；UHC=联合健康保险（United Healthcare）。 ########################################################################################################################### 合并当前操作术语代码（Current Procedural Terminology, CPT）数据——附表7及补充图1。 附表7： 表注：汇总值为各亚组内纳入的所有CPT代码对应的协商费率中位数，而非针对单个CPT代码的估算值。本次展示了评估的CPT代码的汇总统计数据，包括：99203（初诊门诊就诊）、99213（复诊门诊就诊）、11900（病灶内注射治疗）、17110（良性病变破坏术）、17000（癌前病变破坏术）、17261（恶性病变破坏术）、11102（切线活检术）及11104（穿刺活检术）。通过将国家执业医师识别号关联至国家数据库，以确定皮肤科医生的执业环境与执业地点；少数医师的执业环境及执业地点无法识别，因此各亚组的协商费率数量总和可能与总费率存在偏差。城乡分类通过2023年RUCC代码确定。医疗保险全国支付费率包含根据2024B版医师收费表确定的非机构设施费率。亚组间分布差异的显著性通过Kruskal-Wallis检验进行判定，P<0.05即认为存在统计学显著性。 CPT=当前操作术语（Current Procedural Terminology）；IQR=四分位距（Interquartile Range）；RUCC=城乡连续统一代码（Rural-Urban Continuum Codes）；UHC=联合健康保险（United Healthcare）。 补充图1： 按付款方及CPT代码划分的报销费率分布。每组箱线图代表各CPT代码与付款方间的报销费率变异情况。新增的“全部”类别汇总了合并后的全部数据。该图展示了8项常见皮肤科CPT代码对应的报销费率分布范围。