ICD Classification Data set
icd_dat.RdData set specifying the ICD (9 & 10) codes for different events in the morbidity data set.
Usage
data(icd_dat)Format
A data frame where rows correspond to an event and columns correspond to the variable name, morbidity search parameters (diagnosis/ediag, ecode) and ICD code breakdown
- num
Counter variable representing the number of rows associated with any given var
- classification
Classification type
- var
Variable name
- broad_type
Type of diagnosis field this ICD code corresponds to (diagnosis & ediag = "diag_ediag", ecode = "ecode")
- letter
Letter of ICD code (purely numeric is empty string "")
- lower
Lower bound of numeric element of ICD code
- upper
Upper bound of numeric element of ICD code
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