parseIcd9Chapters: parse list of top-level ICD-9 chapters from canonical data from CDC.
Description
There is no easily machine-readable list of the three digit (I call the 'major') ICD-9 code chapters. This code downloads a pretty RTF file and extracts these codes with their names. WORK IN PROGRESS!Value
- named list, with name of chapter being the item name, and value being the three-digit code, or Vxx or Exxx code.