parseIcd9Chapters

<p>Previous iteration attempted to use the canonical data from
  annual RTF files from the CDC, however, this was ridiculously tricky and
  error prone, so now using a reliable website and scraping. Will still
  confirm the results with tests.</p>

internal

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.

Jack O Wasey

icd9

parseIcd9Chapters: Read higher-level ICD-9 structure from a reliable web site

Description

Usage

Arguments