The R package imputeCensRd which implements statistical methods to impute censored covariates can be installed using the devtools package in R as follows.
# Run once: install.packages("devtools")
devtools::install_github(repo = "sarahlotspeich/Imputing-Censored-Covariates/imputeCensRd", ref = "main")
library(imputeCensoRd)