guess_version: Guess version of ICD codes
In icd: Comorbidity Calculations and Tools for ICD-9 and ICD-10 Codes

The guess is indeed a guess and can be wrong. There are some codes which could be either ICD-9 or ICD-10. The current implementation doesn't check whether the codes exist in any definitions (ICD-9 CM or WHO, for example), just whether they are valid.

1	guess_version(x, short_code, ...)

`x`	input data
`short_code`	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.
`n`	number of elements or rows to sample

Currently, ambiguous codes are guessed as being ICD-9 or ICD-10, with no indication of uncertainty. Possible solutions are adding an attribute, warning, or optionally throwing an error.

icd documentation built on July 2, 2020, 4:07 a.m.