convert: Convert codelists between ICD-10, Read and OPCS

In CALIBERcodelists: Generate ICD10, Read and OPCS codelists

Description

Converts codelists or selection objects from one dictionary to another, using the NHS mapping or if the terms are identical in the two dictionaries.

Usage

convert(x, toDictionary = NULL, fromDictionary = NULL, ...)

Arguments

x	a codelist or selection object.
toDictionary	dictionary to convert to.
fromDictionary	dictionary to convert from, optional if it is obvious (e.g. if x is a codelist).
...	other arguments, e.g. mapStatus (see codematch).

Details

Diagnostic ICD-10 terms are only mapped to the diagnostic Read chapters, not to codes in other chapters which might give clues as to a diagnosis (e.g. MI on ECG). Some maps are missing if there is no corresponding ICD-10 term for a Read term (e.g. for STEMI) ICD-10 asterisk terms are permitted for ICD-10 to Read maps, but not the other way round, and dagger terms are not permitted for mapping.

Value

a codelist or selection converted into the new dictionary.

Note

ICD-10 terms cannot be converted to OPCS because they are different types of term: ICD-10 terms are for diagnoses and OPCS are procedures.

Examples

mihes <- codelist(data.frame(icd_code='I21'))
mihes
migprd <- convert(mihes, 'read')
migprd

# Conversion to and from ICD-9
anginaicd10 <- codelist(data.frame(icd_code='I20'))
anginaicd9 <- convert(anginaicd10, 'icd9')
anginaicd9
convert(anginaicd9, 'read')
convert(anginaicd9, 'icd10')

CALIBERcodelists documentation built on Feb. 28, 2020, 3:01 a.m.