The Home-based Unlisted Provider Quick Tabulation File released in early 2021 contained errors in two variables: HB9_ENRL_NHASIAN_NUMCH and HB9_ENRL_NHOTHER_NUMCH. The variable names for this pair of variables were swapped in earlier versions of the data files. The variable names have been corrected; none of the underlying values have changed. This document contains documentation for the corrected versions of these variables, which are included in the addendum data file. (author abstract)