Guzman AK, et al. - The billing patterns and costs of office-based diagnostic procedures were analyzed in the Medicare population using the Part B National Summary Data File (2000–2016) and the Physician and Other Supplier Public Use File (2012–2015) released by the Centers for Medicare & Medicaid Services. Researchers observed a decrease in the total number of claims among all providers since 2000 [potassium hydroxide preparations (KOH), −41.8%; ova and parasites (O&P), −43.4%] as it was 28,432 for KOH and 52,182 for O&P in 2016. Between 2012 and 2015, they noticed a decline in the total claims for in-office procedures by dermatologists per 10,000 beneficiaries (KOH, −18.8%; O&P, −26.6%). A reduction in the total single (SB) and multiple (MB) biopsy claims by dermatologists per 10,000 beneficiaries was noted between 2012 and 2015 (SB, −1.8%; MB, −2.7%). They reported the following 2016 aggregate payments (% change since 2000): $163,127.75 (−60.4%) for KOH, $299,074.18 (−61.6%) for O&P, $240,047,487.98 (+142.3%) for SB whereas for MB, it was $38,214,117.22 (+79.2%).