Comparing chronic condition rates using ICD-9 and ICD-10 in VA patients FY2014-2016.
Jean YoonAdam ChowPublished in: BMC health services research (2017)
Many chronic condition rates were consistent from FY14-16, and there did not appear to be widespread undercoding of conditions after ICD-10 transition. It is unknown whether increased sensitivity or undercoding led to decreases in mental health conditions.