mapICD9ToPhecodes <-
function(..., icd9s, add.info=F, keep.icd9=F) {
if(!missing(icd9s)) {
if(missing(...)){
input=tbl_df(data.frame(icd9=icd9s))
} else {
input=tbl_df(data.frame(list(...),icd9=icd9s))
}
}
else {
input=tbl_df(data.frame(...))
}
if(sum(names(input)=="icd9")==0) {
stop("Must supply a data frame with an 'icd9' column or specify the icd9s parameter")
}
if(class(input$icd9) %in% c("integer","numeric")) {stop("Numeric ICD-9 codes passed in, so an accurate mapping is not possible. E.G.: 250, 250.0, and 250.00 are different codes and necessitate string representation")}
#merge the tables
output = inner_join(input,phemap,by="icd9")
if(add.info){
output=addPhecodeInfo(output)
}
if(!keep.icd9) {
output=output %>% select(-icd9)
}
output
}
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