icd9 (version 1.3.1)

icd9ExpandMinor: expand decimal part of ICD-9 code to cover all possible sub-codes

Description

Accepts a single number or character input starting point for generation of all possible decimal parts of ICD9 code. e.g. giving an empty input will fill out 111 combinations, e..g .1 .11 .12 .... .2 ....

Usage

icd9ExpandMinor(minor, isE = FALSE)

Arguments

minor

character vector of 'minor' part of ICD-9 codes, i.e. that part which falls after the decimal point, in decimal notation. (In 5 digit notation, the 'major' part is be xyz, even when x and y are zero, thus the last two characters represent the 'minor' part, in this case.)

isE

single logical, which if TRUE, treats the minor as part of an E code (which is one character), as opposed to a V or numeric-only code, which is two character. Default is FALSE.

Value

NA for invalid minor, otherwise a vector of all possible (perhaps non-existent) sub-divisions.

See Also

Other ICD-9 ranges: icd9Children, icd9Condense, icd9ExpandRange

Examples

  # return all possible decimal parts of ICD9 codes (111 in total)
  length(icd9:::icd9ExpandMinor("", isE = FALSE))
  icd9:::icd9ExpandMinor("1") # "1"  "10" "11" "12" "13" "14" "15" "16" "17" "18" "19"