icd9PoaChoices


Present-on-admission (POA) is not simply true or false. It can
  be one of a number of indeterminate values, including <code>NA</code>, or "Y" or
  "N". "Present-on-arrival" in this context will mean a positive "Y" flag and
  nothing else. Other interpretations are to include all ICD-9 codes not
  flagged 'N': but this would include many unknowns. Conversely, when looking
  for definite new diagnoses, we should only find 'N' flagged codes, and
  ignore anything marked "Y" or indeterminate. This gives four options: poa
  == "Y" , poa == "N", poa != "N" , poa != "Y".


character

Obsolete: 'icd9' is replaced by CRAN package 'icd'.
Calculate comorbidities, Charlson scores, 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. Any
other mapping of codes, such as ICD-10, to comorbidities can be used.

icd9PoaChoices: present-on-admission flags

Description

Usage

Arguments

Format