Description Usage Arguments See Also Examples
this is cumbersome code, covering a whole load of edge cases relating to the fact that icd9 codes are not in numeric order. An alternative strategy would be to list all the ICD9 codes, then a range would just pick out start and finish positions, and return subset of the list. Not all ICD-9 codes are valid, including some parent codes which have valid children. However, I expect at least some of these have been used in some billing databases.
As with link{icd9ExpandRangeShort}
great care is taken not to
include codes which have children not in the range. E.g. "100.9" to "101.1"
would _not_ include code "101".
onlyReal
default is TRUE
(a change from previous versions)
since this is far more likely to be useful to the end user.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | icd9ExpandRange(start, end, isShort = icd9GuessIsShort(c(start, end)),
onlyReal = TRUE, excludeAmbiguousStart = TRUE,
excludeAmbiguousEnd = TRUE)
icd9ExpandRangeShort(start, end, onlyReal = TRUE,
excludeAmbiguousStart = TRUE, excludeAmbiguousEnd = TRUE)
icd9ExpandRangeMajor(start, end, onlyReal = TRUE)
icd9ExpandRangeDecimal(start, end, onlyReal = TRUE,
excludeAmbiguousStart = TRUE, excludeAmbiguousEnd = TRUE)
start %i9da% end
start %i9sa% end
start %i9d% end
start %i9mj% end
start %i9s% end
|
start, end |
is a character vector of ICD-9 codes. If fewer than five characters is given in a code, then the digits are greedily assigned to hundreds, then tens, then units, before the decimal parts. E.g. "10" becomes "010", not "0010" |
isShort |
single logical value which determines whether the ICD-9 code provided is in short (TRUE) or decimal (FALSE) form. Where reasonable, this is guessed from the input data. |
onlyReal |
single logical value, if TRUE, will limit the search to those codes which appear in the master list, not just syntactically valid codes. Since nearly valid, out-dated or new codes may be missed, not limiting to 'real' values will be useful. Ultimately, there will need to be annual (and all-time) master lists of codes and the ability to test against a given master list given the year of the ICD-9 coding. |
excludeAmbiguousStart |
single logical value, if |
excludeAmbiguousEnd |
single logical, same as
|
Other ICD-9 ranges: icd9Children
,
icd9Condense
, icd9ExpandMinor
1 2 3 4 5 | "4280 " %i9s% "4289 "
"4280 " %i9s% "42821"
"42799 " %i9sa% "42802" # doesn't include 428 or 4280
"427.99 " %i9da% "428.02"
"V80 " %i9s% " V810 "
|
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