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icd9 (version 1.0)

icd9Sort: sort short-form icd9 codes

Description

Sorts lists of numeric only, V or E codes. Note that a simple numeric sort does not work for ICD-9 codes, since "162" > "1620" TODO: write tests. TODO: reply with the actual items given (not trimmed, etc.)

Usage

icd9Sort(icd9, isShort = icd9GuessIsShort(icd9))

icd9SortShort(icd9Short)

icd9SortDecimal(icd9Decimal)

Arguments

icd9

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.

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"

Value

sorted vector of ICD-9 codes. Numeric, then E codes, then V codes.