icd9AddLeadingZeroesMajor

character vector of 'major' part of ICD-9 codes, i.e. that part
which falls before the decimal point, in decimal notation. (In 5 digit
notation, the 'major' part is be the first three characters (with leading
zeroes), and includes V or E prefix. xyz

major

three digit codes are returned unchanged, one and two digit
  codes are preceded by 00 or 0. V or E codes are trimmed for whitespace and
  returned without prefxing. NA values are generated where the code is
  non-numeric, and doesn't match a valid V or E code format.

manip

internal

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.

icd9AddLeadingZeroesMajor: zero-pad major part of ICD9 code

Description

Usage

Arguments

Value

See Also