icd9 (version 0.5)

icd9Real: Does ICD-9 code exist

Description

This is different from syntactic validity: it looks it up in the list of icd9 codes. This may have been easier all along, but checking syntactic validity still very useful, with a changing list of icd-9 codes over time, and possibly imperfections in the master list derived from CMS.

Usage

icd9Real(icd9, isShort, invalidAction = icd9InvalidActions)
icd9RealShort(icd9Short, invalidAction = icd9InvalidActions)
icd9RealDecimal(icd9Decimal, invalidAction = icd9InvalidActions)

Arguments

icd9

is a character vector of ICD-9 codes. If fewer than five characters is given in a code, then the digits are greedily assigned to hundreds, then tens, then units, before the decimal parts. E.g. "10" becomes "010", not "0010"

isShort

single logical value which determines whether the ICD-9 code provided is in short (TRUE) or decimal (FALSE) form.

invalidAction

character string (unit length) containing one of: "ignore", "silent", "warn", "stop"

- ignore no check for validity of ICD-9 code is made implicitly. This is the fastest option. If the function call is explicitly to check validity, e

icd9Short

is a character vector of ICD-9 codes. If fewer than five characters is given in a code, then the digits are greedily assigned to hundreds, then tens, then units, before the decimal parts. E.g. "10" becomes "010", not "0010"

icd9Decimal

character vector of ICD-9 codes. If fewer than five characters is given in a code, then the digits are greedily assigned to hundreds, then tens, then units, before the decimal parts. E.g. "10" becomes "010", not "0010"

Value

• logical vector