icd9_chapters: ICD-9 chapters

Description Details Source


icd9_chapters, icd9_chapters_sub and icd9_majors contain mappings from the higher level descriptions of ICD-9 codes to the ranges of ICD-9 codes they describe. Helpful in summarizing codes or grouping for human-readable output. These can easily be converted to a co-morbidity mapping, as shown in the vignette.


Format: list with chapter/sub-chapter or major names stored in list names, each with two element named character vector with start and end codes.



icd.data documentation built on May 2, 2019, 8:52 a.m.