icd9FilterInvalid

data frame containing columns for visitId (which is the feault
name), icd9 (default for the icd9 code), and maybe also a POA flag.

icd9df

The column in the data frame which contains the ICD-9 codes.
This is a character vector of length one.

icd9Field

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.

isShort

single logical value, if TRUE will return valid instead of invalid rows.

invert

Filters a data.frame of patients for valid or invalid ICD-9 codes

Calculate comorbidities, and perform fast and accurate
validation, conversion, manipulation, filtering and comparison of ICD-9-CM
(clinical modification) codes. ICD-9 codes appear numeric but leading and
trailing zeroes, and both decimal and non-decimal "short" format codes
exist. The package enables a work flow from raw lists of ICD-9 codes from
hospital billing databases to comorbidities. ICD-9 to comorbidity mappings
from Quan (Deyo and Elixhauser versions), Elixhauser and AHRQ included.

icd9FilterInvalid: Filter ICD-9 codes by invalidity.

Description

Usage

Arguments