icd9SortShort

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"

icd9Short

character string (unit length) containing one of:
  "ignore", "silent", "warn", "stop"<p></p><p>  - <code>ignore</code> no check for validity of ICD-9 code is made implicitly.
  This is the fastest option. If the function call is explicitly to check
  validity, e</p>

invalidAction

should work with numeric only, V or E codes. Note that a 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.) TODO: need to
  be able to compare a pair of codes quickly, then use built-in sort. This
  becomes easier when I move to S3 classes for ICD-9.

manip

This package allows accurate manipulation, validation and
    comparison of ICD-9-CM (clinical modification) codes. Although ICD-9 codes
    appear numeric, this is not the case, since trailing zeroes, and a mixture
    of decimal and non-decimal "short" format codes exist. Tools to map ICD-9
    codes to co-morbidities are also provided, with mappings from Quan (Deyo
    and Elixhauser versions), Elixhauser and AHRQ included.

icd9SortShort: sort short-form icd9 codes

Description

Usage

Arguments

Value