icd (version 2.2)

sas_format_extract: Extract assignments from a SAS FORMAT definition

Description

This is modelled entirely on a single chunk of SAS code, but hopefully can be generalised. It relies heavily on lists and regular expression, but, as you will see from the code, R is not a great language with which to write a SAS parser.

Usage

sas_format_extract(sas_lines)
sas_format_extract_rcomfmt(sas_lines)

Arguments

sas_lines

is a character vector, with one item per line, e.g. from readLines

Value

list (of lists)

Functions

• sas_format_extract_rcomfmt: Get just the $RCOMFMT assignment, which contains all the ICD (not DRG) data. The problem is RENLFAIL appears twice:

  "N183", "N184", "N185", "N186", "N189", "N19", "Z4901", "Z4902", "Z9115", "Z940", "Z992"="RENLFAIL" /*Dependence on renal dialysis*/

  "Z4931", "Z4932"="RENLFAIL" /*Encounter for adequacy testing for peritoneal dialysis*/

  so RENLFAIL needs special treatment

References

http://support.sas.com/documentation/cdl/en/proc/61895/HTML/default/viewer.htm#a002473474.htm

Examples

# NOT RUN {
  
# }
# NOT RUN {
  sas_format_extract(readLines('data-raw/comformat2012-2013.txt'))
  
# }