Usage
icd9Children(icd9, isShort = icd9GuessIsShort(icd9), onlyReal = TRUE, onlyBillable = FALSE)
icd9ChildrenShort(icd9Short, onlyReal = TRUE, onlyBillable = FALSE)
icd9ChildrenDecimal(icd9Decimal, onlyReal = TRUE, onlyBillable = FALSE)
Arguments
icd9
is
a character vector or factor 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.
onlyBillable
single logical value, if TRUE, describes the input
data, stating that it only contains billable codes. Usually, the function
will try to guess this, but if you know in advance what they should be, the
functions can optionally warn if this is incorrect, and save some
computation time. The billable codes are derived from the CMS list. The
most recent version is used by default.
icd9Short
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"
icd9Decimal
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"